HCIA-Datacom V1.0 H12-811_V1.0 Sample Questions

Jonnie Karnath2023-10-26T06:40:48+00:00

To assist you in achieving HCIA-Datacom Certification, we highly recommend trying out the latest HCIA-Datacom V1.0 H12-811_V1.0 Sample Questions provided by Certspots. By utilizing these sample questions, you will not only enhance your level of preparation but also increase your confidence of successfully passing the exam. These HCIA-Datacom V1.0 H12-811_V1.0 Sample Questions are specifically designed to cover all the essential topics and concepts required for the certification exam, enabling you to understand the exam content comprehensively. Additionally, practicing with these HCIA-Datacom V1.0 H12-811_V1.0 Sample Questions will help you familiarize yourself with the exam format and improve your time management skills. Take advantage of this valuable resource to optimize your chances of achieving HCIA-Datacom Certification!

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1. As shown in the figure below, host A and host B cannot communicate.

True

False

2. Hybrid ports can be connected to both user hosts and other switches.

True

False

3. Which of the following fields does the ARP packet format contain? (Multiple choice)

Operation type

protocol type

Hardware type

protocol Address of sender

4. Which of the following belongs to the transfer process of MPLS VPN routing? (Multiple choice)

Routing exchange between CE and PE

The process of assigning public network labels

The process of injecting VRF routes into MP-BGP

The process of injecting MP-BGP routes into VRF

5. Link aggregation is a common technique in enterprise networks.

Which of the following descriptions are the advantages of link aggregation technology? (Multiple choice)

to improve security

Implement load sharing

Increased bandwidth

to improve reliability

6. 192.168.1.127/25 represents the () address?

Unicast

Host

broadcasting

Multicast

7. Which of the following descriptions of OSPF is correct? (Multiple choice)

The number of the backbone area cannot be 2

Area numbers from 0.0.0.0-255.255.255.255

All networks should be declared in area 0

Before configuring an OSPF area, an IP address must be configured for the loopback port of the router

8. The administrator cannot log in to the Huawei router through Telnet, but other administrators can log in normally, so which of the following items is the possible reason? (Multiple choice)

The administrator user account has been disabled

The Telnet service of the AR2200 router has been disabled

The permission level of the administrator user account has been changed to 0

The administrator user account has been deleted

9. On the command line interface of the Huawei AR router, the save command is used to save the current system time.

True

False

10. The IPv6 address 2001:ABEF:224E:FFE2:BCCO:CDOO:DDBE:8D58 cannot be abbreviated.

True

False

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11. The switch receives a unicast data frame. If the destination MAC of the data frame can be found in the MAC table, the data frame will definitely be forwarded from the port corresponding to the MAC.

True

False

12. WiFi6 actually refers to the IEEE802.11ax standard.

True

False

13. On the VRP platform, what is the function of the command "interface vlanif<vlan-id>"?

Configure VLAN for a port

Create a VLAN

No such order

Create or enter VLAN virtual interface view

14. Which message does the DHCP server use to confirm that the host can use the IP address?

DHCP ACK

DHCP DISCOVER

DHCP REQUEST

DHCP OFFER

15. The origin of SDN is the separation of transfer and control. Separation of control and control is a method but not the essence of realizing SDN.

True

False

16. In the network shown in the figure below, all routers run the OSPF protocol, and the link cost value is shown in the figure, what is the cost value of the route entry to the network 10.0.0.0/8 in the RTA routing table?

100

17. A DHCP server is deployed in the network, but the administrator finds that some hosts have not correctly obtained the address specified by the DHCP server. What are the possible reasons? (Multiple choice)

Some hosts cannot communicate with the DHCP server normally, and the client systems of these hosts automatically generate addresses within the range of 172.254.0.0

There is another DHCP server with higher working efficiency in the network

Some hosts cannot communicate with the DHCP server normally, and the client systems of these hosts automatically generate addresses within the range of 169.254.0.0

The address pool of the DHCP server has been fully allocated

18. Which of the following port states does the RSTP protocol include? (Multiple choice)

Discarding

Forwarding

Listening

Learning

19. A company has applied for a class C IP address segment, but it needs to be allocated to 6 subsidiaries. The largest subsidiary has 26 computers. Different subsidiaries must be in different network segments. Then the network of the largest subsidiary the subnet mask should be set to?

255.255.255.128

255.255.255.192

255.255.255.224

255.255.255.0

20. In the network shown in the figure below, all routers run the OSPF protocol. Which device is the ABR? (Multiple choice)

Router A

Router B

Router C

Router D

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21. The security policy of WEP mode supports the use of TKIP for data encryption.

True

False

22. On Huawei switches, you can use the command vlan batch to create multiple VLANs in batches to simplify the configuration process.

True

False

23. NAPT distinguishes the IP addresses of different users through the protocol numbers in TCP or UDP or IP packets.

True

False

24. A router running the OSPF protocol can only reach the FULL state after completing LSDB synchronization.

True

False

25. In the network shown in the figure below, host A is not configured with a gateway, and host B has an ARP cache of the gateway. Use the command ping 11.0.12.1 on host A. Which of the following statements is correct?

No packets will be sent from host A

The destination MAC address of the data sent by host A is MAC-C

The destination MAC address of the data frame sent by host A is MAC-B

The destination IP address of the data packet sent by host A is 11.0.12.1

26. On the interface that uses PPP as the data link layer protocol, you can configure static routing by specifying the next hop address or the outgoing interface.

True

False

27. Which of the following descriptions about Layer 2 Ethernet switches is wrong?

Layer 2 Ethernet switches work at the data link layer

Able to learn MAC address

It is necessary to make certain modifications to the layer 3 header of the forwarded message, and then forward it

Forward according to the layer 2 header information of the Ethernet frame

28. Segment Routing encodes the segment sequence representing the forwarding path in the header of the data packet, transmits it along with the data packet, and parses the segment sequence after receiving the data packet at the receiving end. If the segment ID at the top of the segment sequence is the current node, pop up the ID and proceed to the next step. If not, use the ECMP (Equal Cost Multiple Path) method to forward the data packet to the next node.

True

False

29. The function of telnet.read_very_eager in Telnetlib is to read data non-blockingly. Usually needs to be used together with the time module.

True

False

30. Which field in the IPv6 packet header can be used for QoS?

Payload Length

Traffic Class

Version

Next Header

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31. Under the trend of mobility, which new requirements do enterprises put forward for traditional networks? (Multiple choice)

Strict hierarchical networking

Consistent business experience anytime, anywhere

Wired and wireless unified management

Support rapid deployment of mobile applications

32. Which of the following advantages does stacking and clustering technology have? (Multiple choice)

Number of expansion ports

Simplify device management, just manage a logical device

Link aggregation across physical devices can be deployed

Effectively avoid single point of failure

33. After successfully logging in to the router through Telnet, the administrator finds that the interface IP address of the router cannot be configured. So what are the possible reasons?

The authentication mode of the Telnet user is wrongly configured.

The Telnet terminal software used by the administrator prohibits corresponding operations

Telnet user level configuration error

SNMMP parameter configuration error

34. If two switches use manual link aggregation at the same time, which of the following statement is wrong?

Only close the G0/0/2 port on switch B, and the Eth-Trunk status is still UP

Close the G0/0/1 and G0/0/2 ports on switch B, and the Eth-Trunk status is still UP

Only close the G0/0/1 port on switch B, and the Eth-Trunk status is still UP

Close the G0/0/1 and G0/0/2 ports on switch B, and the Eth-Trunk status is down

35. An ACL of a router has the following rules:

rule deny tcp source 192.168.1.0 0.0.0.255 destination 172.16.10.1 0.0.0.0 destination-port eq 21

Which of the following statements is correct?

The type of ACL is basic ACL

All TCP packets whose source IP is 192.168.1.1, destination IP is 172.16.10.2, and destination port number is 21 match this rule

All TCP packets whose source IP is 192.168.1.1, destination IP is 172.16.10.1, and destination port number is 21 match this rule

All TCP packets whose source IP is 192.168.1.1, destination IP is 172.16.10.2, and destination port number is 21 match this rule

36. Which of the following information will the VRP operating platform use to prompt for incomplete input commands?

Error: Incomplete command found at '^'position

False: Wrong parameter found at '^'position

Error: Ambiguous command found at '^'position

Error: Too many parameters found at '^'position

37. The network administrator hopes to effectively use the IP address of the 192.168.176.0/25 network segment.

Now the company's marketing department has 20 hosts, which of the following address segments should be assigned to the marketing department?

192.168.176.160/27

192.168.176.0/25

192.168.176.96/27

192.168.176.48/29

38. In the broadcast network shown in the figure, OSPF runs on four routers, and they are in the same area and the same network segment.

OSPF will automatically elect one DR and multiple BDRs, so as to achieve better backup effect.

True

False

39. A gateway must be configured for a host to communicate with other hosts.

True

False

40. Regarding the description of the PPP link establishment process, which of the following statements is wrong? (Multiple choice)

In the Establish phase, the PPP link performs LCP parameter negotiation. Negotiation content includes options such as maximum receiving unit MRU, authentication method, magic word, etc.

After the NCP negotiation is successful, the PPP link will maintain the communication state and enter the Terminate stage

The dead stage is also called the physical layer unavailable stage. When the two ends of the communication detect the activation of the physical line, they will move from the Dead stage to the Establish stage, that is, the link establishment stage

In the Network phase, the PPP link performs NCP negotiation. Select and configure a network layer protocol through NCP negotiation, and conduct network layer parameter negotiation EPPP links support half-duplex and full-duplex modes

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41. By default, it takes at least 30 seconds for the port state in the STP protocol to change from Disabled to Forwarding state.

True

False

42. As shown in the figure, regarding the topology and configuration of OSPF, which of the following statements is correct?

R1 and R2 can establish a stable OSPF neighbor relationship

Compared with R1 and R2, R2 has a higher chance to become the DR because its interface DR priority value is smaller

As long as the interface network type of R1 is restored to the default broadcast type, R1 and R2 can establish a stable neighbor relationship

As long as the interface network type of R1 is restored to the default broadcast type, and the hello time is adjusted to 10s, R1 and R2 can establish a stable neighbor relationship

43. The configuration BPDU message of the STP protocol does not contain which of the following parameters?

Root ID

Bridge ID

Port ID

VLAN ID

44. Telnetlib is a template that comes with Python to implement the Telnet protocol.

True

False

45. When the AP and AC are in different three-layer networks, which method is recommended for the AP to discover the AC?

DNS

Manually specified on the AP

DHCP

Broadcast method

46. Which of the following messages are OSPF protocol messages? (Multiple choice)

Hello

LSA

LSR

LSU

47. Which of the following statements about RA and RS packets in IPv6 is correct? (Multiple choice)

RS is used to request address prefix information

RS is used to reply address prefix information

RA is used to reply address prefix information

RA is used to request address prefix information

48. Which of the following protocols is not a file transfer protocol?

FTP

SFTP

HTTP

TFTP

49. In order to ensure that the same data flow is forwarded on the same physical link, which method of load sharing does Eth-Trunk use?

Flow-based load balancing

Packet-Based Load Balancing

Load sharing based on application layer information

Load sharing based on the incoming interface of data packets

50. The authentication scheme, authorization scheme, accounting scheme, HYTACACS or RADIUS server template created on the AR router can take effect only after being applied in the domain.

True

False

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51. Which packet does the OSPF protocol use to discover and maintain neighbor relationships?

HELLO

LSU

LSR

52. In the network shown in the figure, the administrator hopes that all hosts cannot access the Internet every day from 8:00 to 17:00, which ACL rule should be bound to the traffic-filter outbound in the interface configuration of G0/0/1?

Time-range am9topm5 08:00 to 17:00 daily # Acl number 2001 Rule 5 deny time-range am9 to pm5 #

Time-range am9topm5 07:00 to 18:00 daily # Acl number 2002 Rule 5 permit time-range am9 to pm5 #

Time-range am9topm5 08:00 to 17:00 off-day # Acl number 2004 Rule 5 permit time-range am9 to pm5 #

Time-range am9topm5 08:00 to 17:00 working-day # Acl number 2003 Rule 5 deny time-range am9 to pm5 #

53. In the network shown in the figure below, host A is not configured with a gateway, and host B has an ARP cache of the gateway. Which of the following statements is correct? (Multiple choice)

Enable ARP proxy on the router G0/0/1 port, then host A can communicate with host B

The data packet sent by host B with the destination IP address 10.0.12.1 can be forwarded to host A

The data packet sent by host A with the destination IP address 11.0.12.1 can be forwarded to host B

Host A and host B cannot communicate bidirectionally

54. Which of the following descriptions about the firewall is wrong?

A firewall can implement access control between different networks

Firewalls can isolate networks with different security levels

The firewall can realize user authentication

The firewall cannot implement network address translation

55. Which of the following IEEE 802.11 standards does not support communication in the 5GHz frequency band?

802.11n

802.11g

802.11ac wave 1

802.11ac wave2

56. DHCPv6 is a stateful address auto-configuration protocol.

True

False

57. What are the reasons why DHCP face many security threats? (Multiple choice)

The man-in-the-middle uses the false mapping relationship between the IP address and the MAC address to deceive the DHCP client and server at the same time

DHCP Server cannot distinguish what kind of CHADDR is legal and what kind of CHADDR is illegal

The response time of DHCP dynamically assigning IP addresses is long

Since the DHCP discovery message (DHCP Discover) is sent in the form of broadcast

58. Why is it said that the QoS of the network can be improved by increasing the link bandwidth capacity? (Multiple choice)

The increase in link bandwidth reduces the chance of congestion and reduces the number of lost packets

An increase in link bandwidth can increase the available bandwidth of the control protocol

Increased link bandwidth means less latency and jitter

Increased link bandwidth can support higher traffic

59. Routers in the backbone area have complete link state information for all other areas.

True

False

60. As shown in the figure, all four switches are running STP, and various parameters adopt default values.

If the G0/0/2 port of switch C is blocked and cannot send configuration BPDUs through this port, how long will it take for the blocked port in the network to enter the forwarding state?

About 30 seconds

About 50 seconds

About 15 seconds

About 3 seconds

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61. Regarding delay and jitter, which of the following description is correct? (Multiple choice)

End-to-end delay is equal to the sum of processing delay and queuing delay

Jitter is caused by the unequal end-to-end delay of each packet

The size of the jitter is related to the size of the time delay. If the time delay is small, the range of jitter is also small, and if the time delay is large, the possible range of jitter is also large.

Jitter size is not related to delay

62. Which of the following protocols is a link state routing protocol?

PTP

OSPF

Direct

Static

63. The switch is connected to the host, and the commonly used port link type of the switch is?

Hybrid link

Trunk link

Access link

Trunk link

64. The configuration information of a certain router is shown in the figure, which of the following statements is correct? (Multiple choice)

The domain name huawei does not use the billing plan

Use the username huawei for authentication, and the password needs to be 654321

The authentication method adopted by the domain name huawei is local authentication

The authorization method adopted by the domain name huawei is local authorization

65. If there is an inclusion relationship in the configured ACL rules, it should be noted that the rule numbers of the strict conditions need to be sorted first, and the rule numbers of the loose conditions need to be sorted last, so as to prevent the packet from stopping to continue matching due to hitting the rules of the loose conditions, thereby Rules that make it impossible to hit strict conditions.

True

False

66. IPv6 protocol uses NS and NA packets for duplicate address detection (DAD).

True

False

67. In the RSTP protocol, the P/A mechanism requires that the link between two switching devices must be in point-to-point full-duplex mode.

True

False

68. A certain router runs the OSPF protocol and does not specify a Router ID. The IP addresses of all interfaces are as follows. What is the Router ID of this router’s OSPF protocol?

10.0.21.1

10.0.1.2

10.0.1.1

10.0.12.1

69. After a fault occurs in the network, the administrator finds that the configuration of a certain router has been modified through investigation, so what measures should the administrator take to avoid this situation from happening again? (Multiple choice)

The administrator should configure the ACL to control only the administrator can log in to the device

The administrator should enable port-secrity on the routed management port

The administrator should configure AAA to authenticate and authorize users who log in to the device

The administrator should configure the permission level of all accounts except the administrator to log in to the device as 0

70. BFD is only a general fast detection technology, which can realize the fast switching function by itself, and it does not need to be used together with other fast switching technologies.

True

False

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71. The network shown in the figure below, which of the following statements is correct? (Multiple choice)

Host A and host C can ping through

All hosts can ping each other

Host B and host C can ping through

Host A and host B cannot ping through

72. Which elements can NAPT convert?

Only the MAC address

IP address + port number

MAC address + port number

Only the IP address

73. Which of the following characteristics does the default VLAN in a Layer 2 Ethernet switch have? (Multiple choice)

The default VLAN cannot be deleted manually

By default, all ports of the switch are member ports of the default VLAN

A default VLAN must be created before a port can be assigned to it

The IP address configured on the switch will only be applied to the member ports of the default VLAN

74. The working mode of the AP does not allow switching.

True

False

75. Which of the following statements about Hybrid ports is correct?

The Hybrid port can strip the tags of certain vlan frames in the direction of the outgoing port

When the Hybrid port sends a data frame, it must carry the vlan tag

Hybrid ports only receive data frames with vlan tag

Hybrid port does not require PVID

76. The packet that the DHCP server responds to the client must be a unicast packet.

True

False

77. When using Telnet to log in to the router, which authentication methods can be selected? (Multiple choice)

password authentication

AAA Local Authentication

Not certified

MD5 ciphertext authentication

78. The "maximum-vty" of the VTY user interface determines how many users can log in to the device through Telnet at the same time.

True

False

79. Which of the following authentication methods does not require entering a user name and password?

authentication-mode none

authentication-mode local

authentication-mode hwtacacs

authorization-mode hwtacacs

80. After the stack splits, the side that loses the MAD election will be in ().

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81. In order to join a wireless network, TA needs to obtain wireless network information first. Which of the following messages does STA use to actively obtain SSID information?

Join

Discovery

Beacon

Probe

82. Which of the following protocols is OSPF based on?

HTTP

UDP

TCP

83. The MAC address of the existing switch is shown in the figure, which of the following statements is correct?

When the switch restarts, the MAC address learned by port Eth0/0/2 does not need to be relearned

The data frame with source MAC address 5489-9885-18a8 and destination MAC address 5489-989d-1d30 learned from the port is forwarded from Eth0/0/1 port

The data frame with source MAC address 5489-9811-0b49 and destination MAC address 5489-989d-1d30 learned from the port is forwarded from Eth0/0/2 port

When the switch restarts, the MAC address learned by port Eth0/0/3 needs to be relearned

84. Which devices are generally involved in the WLAN deployment scheme in the enterprise scenario? (Multiple choice)

AC (Access Controller)

PoE switch

CPE

85. What are the main parts of SNMP? (Multiple choice)

Agent process

Managed Devices

Network management station

Management Information Base

86. Network devices running SNMP protocol can actively report alarm information so that network administrators can find faults in time.

True

False

87. The broadcast address of the network segment 192.168.1.0/25 is 192.168.1.128.

True

False

88. CSS refers to the combination of two switch devices that support the cluster feature, logically combining into one switch device.

True

False

89. In the network shown in the figure below, the network administrator hopes that the data packets sent from host A to host B will pass through the G0/0/3 interface between the routers when the network administrator performs traffic planning, and the data packets sent from host B to host A will pass through the router Which of the following commands can achieve this requirement on the G0/0/4 interface? (Multiple choice)

RTA: ip route-static 0.0.0.0 0.0.0.0 11.0.12.2 RTB: ip route-static 0.0.0.0 0.0.0.0 11.0.12.5

RTA: ip route-static 0.0.0.0 0.0.0.0 11.0.12.6 RTB: ip route-static 0.0.0.0 0.0.0.0 11.0.12.1

RTA: ip route-static 10.0.12.5 255.255.255.252 11.0.12.2 RTB: ip route-static 10.0.12.1 255.255.255.252 11.0.12.5

RTA: ip route-static 10.0.12.5 255.255.255.252 11.0.12.6 RTB: ip route-static 10.0.12.1 255.255.255.252 11.0.12.1

90. How many more bytes are there in the packet using MPLS label double nesting technology than the original IP packet?

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91. SRGB (segment routing global block) is a set of local labels reserved for the global segment. In MPLS and IPv6, SRGB is a set of local labels reserved for global labels.

True

False

92. An explicit path can be easily defined through SR (Segment Routing). Nodes in the network only need to maintain Segment Routing information to cope with real-time and rapid business development.

What are the following characteristics of Segment Routing? (Multiple choice)

SR (Segment Routing) uses IP forwarding, and does not need to maintain another label forwarding table

Support the centralized control mode of the controller and the distributed control mode of the transponder at the same time, providing a balance between centralized control and distributed control

By extending existing protocols (such as IGP), the existing network can evolve smoothly

Using source routing technology to provide the ability to quickly interact between the network and upper-layer applications

93. When a device running STP receives RSTP configuration BPDU, it will discard it.

True

False

94. Which of the following descriptions about IPv6 is correct? (Multiple choice)

The address length of IPv6 is 128bits

The address length of IPv6 is 64bits

When an IPv6 packet has multiple extension headers, the extension headers must appear in order

When an IPv6 packet has multiple extension headers, the extension headers can appear randomly

95. If the Length/Type of an Ethernet data frame = 0x8100, then the payload of this data frame may be? (Multiple choice)

TCP data segment

ICMP message

ARP packets

UDP data

96. By checking the DHCP configuration information and message statistics, you can check the device running status, receive and send the count of DHCP messages, so as to facilitate the positioning of problems in the daily maintenance process.

Which of the following commands can be used to view DHCP messages? (Multiple choice)

display dhcp statistics

display dhcp relay staitstics

display dhcp server statistics

display dhcp

97. When deploying ACL on Huawei equipment, which of the following descriptions is correct? (Multiple choice)

ACL can match the TCP/UDP port number of the packet, and can specify the range of the port number

The same ACL can be called under multiple interfaces

When ACL defines rules, it can only be advanced in the order of 10, 20, 30

ACL cannot be used to filter OSPF traffic, because OSPF traffic is not suitable for UDP protocol encapsulation

When the ACL is invoked on the interface, it can only be applied to the outbound direction

98. MPLS is called Multi-Protocol Label Switching. About the label description in MPLS, which one is correct? (Multiple choice)

The label stack organizes labels in a Last In First Out (LIFFO) manner, and starts processing labels from the top of the stack

Labels are encapsulated between the link layer and the network layer

The label stack organizes labels in a Last In First Out (Last In First Out) manner, and starts processing labels from the bottom of the stack

4 bytes of fixed length on the label

99. Which of the following statements about the generation protocol root bridge election is correct?

The device with the highest bridge priority becomes the root bridge

When the bridge priorities are the same, the device with more ports becomes the root bridge

When the bridge priorities are the same, the device with the larger MAC address becomes the root bridge

The device with the lowest bridge priority value becomes the root bridge

100. In the DHCPv6 stateless automatic allocation scheme, the host does not need to send any DHCPv6 packets.

True

False

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101. What kind of packets does OSPF use to send LSAs to neighbors?

LSR

LSACK

LSU

LSA

102. According to the different reference information of classification rules, traffic classification can be divided into? (Multiple choice)

Simple flow classification

Complex traffic classification

On-demand stream classification

Traffic Classification

103. As shown in the figure, if the command ping 10.1.1.2 is executed on R1, the data frame received by LSW1 from VLAN10 of LSW2 is tagged.

True

False

104. As shown in the figure, if host A has the ARP cache table of host B, host A can ping host B through.

True

False

105. What is the wrong statement about static routing in Huawei equipment? (Multiple choice)

When the static route priority is 0, the route must be given priority.

The cost value of the static route cannot be modified

The default value of the priority of the static route is 60

The priority range of static routes is 0-255

106. On a broadcast network, both DR and BDR use the multicast address 224.0.0.6 to receive link state update messages.

True

False

107. In the history of WLAN development, which of the following is not included in the main wireless protocol standards in the primary mobile office era?

802.11ac

802.11g

802.11b

802.11a

108. In the VRP operating system, how to enter the view of OSPF area 0? (Multiple choice)

[Huawei-ospf-1] area 0.0.0.0

[Huawei] ospf area 0

[Huawei-ospf-1] area 0 enable

[Huawei-ospf-1] area 0

109. Which of the following statements about Python is wrong?

Python has a wealth of third-party libraries.

Python is a high-level programming language that is completely open source.

Python can be used in many fields such as automated operation and maintenance scripts, artificial intelligence, and data science.

Python has a clear grammatical structure, easy to learn and efficient at the same time.

110. When configuring OSPF on a router, what must be manually configured? (Multiple choice)

Specify the network type of each OSPF-enabled interface

Create an OSPF area

Create an OSPF process

Configure Router ID

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111. The function of telnet.read.all() in telnetlib is to read all the data until EOF. If the echo does not return EOF, it will be blocked consistently.

True

False

112. When there are redundant links in the switching network, using STP can solve the loop problem in the switching network.

True

False

113. Which statement about the function of the network layer in the OSI reference model is correct?

Transmits a bitstream between devices, specifying levels, speeds, and cable pinouts

The layer closest to the user in the OSI reference model , which provides network services for applications

Provide connection-oriented or non-connection-oriented data transfer and error detection before retransmission

Combine bits into bytes, then combine bytes into frames, use link layer addresses (Ethernet uses MAC addresses) to access media, and perform error detection

Provide a logical address to forward data from source to destination

114. Regarding the configuration of the switch port, which of the following statements is wrong?

interface GigabitEthernet 0/0/2

port hybrid pvid vlan 100

port hybrid tagged vlan 100

port hybrid untagged vlan 200

If the vlan tag carried by the data frame is 200, strip the tag and forward

If a data frame without vlan tag is received, the switch should add vlan tag 100

The interface type is hybrid

If the vlantag carried by the data frame is 100, strip the tag and forward it.

115. After the network administrator uses the Tracert Route function on the router device, in the data packet sent by the router, the value of the protocol field of the IPV4 header is?

116. The ACL does not filter the traffic generated by the device itself to access other devices, but only the forwarded traffic, which includes the traffic from other devices accessing the device.

True

False

117. Which of the following statements about each version of the SNMP protocol is correct? (Multiple choice)

SNMMPv3 messages have the functions of authentication and encryption.

SNMPv2c follows the five protocol operations defined in v1 and adds two additional operations.

SNMPv1 uses UDP as the transport layer protocol, while SNMPv2c and SNMPv3 use TCP as the transport layer protocol, so the reliability is higher.

SNMPv2c messages have the functions of authentication and encryption.

118. What is the Solicited-node multicast address corresponding to the IPv6 address 2019::8:AB?

FF02::1:FF08:AB

FF02::1:FE08:AB

FF02::FF08:AB

FF02::1:FF20:19

119. In the network shown in the figure, the following configuration exists in the Router A device, and which of the following statement is correct? (Multiple choice)

ip route-static 10.0.2.2 255.255.255.255 10.0.12.2

ip route-static 10.0.2.2 255.255.255.255 10.0.21.2 preference 40

If the G0/0/1 port is Down, the route NextHop of Router A to 10.0.2.2 is changed to 10.0.21.2

If the G0/0/2 port is Down, the route NextHop of Router A to 10.0.2.2 is changed to 10.0.12.2

The NextHop reaching 10.0.2.2 in Router A's routing table is 10.0.21.2

The NextHop reaching 10.0.2.2 in Router A's routing table is 10.0.12.2

120. Which of the following attributes cannot be used as a parameter to measure Cost?

Latency

sysname

Hop count

Bandwidth

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121. An AR2200 router needs to restore the initial configuration, which of the following operations are necessary? (Multiple choice)

Reset the saved configuration

Clear the current configuration

Restart the AR2200 router

Re-specify the configuration file loaded at next startup

122. Which of the following descriptions about OSPF areas is correct? (Multiple choice)

All networks should be declared in area 0

Before configuring the OSPF area, you must configure the IP address for the loopback interface of the router

Zone numbers range from 0.0.0.0 to 255.255.255.255

The number of the backbone area cannot be 2

123. Ethernet frames are processed and forwarded in the form of VLAN TAG inside the switch.

True

False

124. A company applies for a class C IP address segment, which needs to be evenly distributed to 8 subsidiaries. The largest subsidiary has 14 computers. Different subsidiaries must be in different network segments. The subnet mask should be set to?

255.255.255.192

255.255.255.240

255.255.255.0

255.255.255.128

125. The administrator configures OSPF on a certain router, but no loopback interface is configured on this router. What is the correct description of the Router ID below?

The priority of the router will become the Router ID

The IP address of the router's management interface will become the Router ID

The maximum IP address of the router's physical interface will become the Router ID

The minimum IP address of the router's physical interface will become the Router ID

126. User cannot configure VLAN ID as 0.

True

False

127. In PPP, when the two ends of the communication detect the activation of the physical link, they will transition from the link unavailable stage to the link establishment stage. In this stage, the link parameters are mainly negotiated through the () protocol

LCP

NCP

DHCP

128. DHCP server can use different address ranges to assign clients. Which one is correct about the description of the assigned addresses? (Multiple choice)

It can be the IP address statically bound to the client's MAC address in the DHCP server's database

It can be the IP address used by the client, that is, the address of the Requested IpAddr option in the DHCP DISCOVER message sent by the client

In the DHCP address pool, search for the IP addresses available for allocation in sequence, that is, the IP address found first

Regarding the IP addresses that exceed the lease period and have conflicts queried by the DHCP server, if an available IP address is found, it can be assigned E can be the IP address that the client once conflicted with other clients

129. The Layer 2 networking of the WLAN means that the STA uses the AC as its gateway.

True

False

130. Which of the following network types does the OSPF protocol support? (Multiple choice)

Broadcast type

Point-to-multipoint

Point-to-point type

NBMA

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131. MAC address table does not include?

Port number

Vlan

IP address

MAC address

132. When LACP is used for horizontal link aggregation, what is the default system priority of Huawei switches?

36864

24576

4096

32768

133. The packet filtering firewall provides support for detecting and filtering fragmented packets. What kind of fragmented packets can the packet filtering firewall filter? (Multiple choice)

Subsequent fragmented packets

Non-fragmented packets

Forged ICMP error messages

The first fragmented packet

134. A network engineer prompts the following information when entering the command line:

Error: Unrecognized command found at '^' position. Which statement is correct about this prompt message?

The input command is incomplete

The parameter type is wrong

The input command is ambiguous

Keyword not found

135. Based on ACL rules, which of the following types can ACL be divided into? (Multiple choice)

Basic ACLs

User ACLs

Advanced ACLs

Layer 2 ACL

136. On the VRP operating platform, which of the following commands can only view static routes?

display IP routing-table

display IP routing-table statistics

display IP routing-table verbose

display IP routing-table protocol static

137. At which layer of the OSI reference model does the Ethernet switch work?

Data link layer

Transport layer

Physical layer

Network layer

138. Which of the following commands can be used to view the CPU usage of the router?

display cpu-usage

display memory

display cpu-state

display interface

139. The switch becomes a logical switch through stacking and clustering, and Eth-Trunk across physical devices can be deployed to improve network reliability.

True

False

140. Static NAT can only implement one-to-one mapping between private addresses and public addresses.

True

False

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141. IEEE802.11ac only supports the 5GHZ frequency band.

True

False

142. As shown in the figure, when the switch needs to forward the frame whose destination mac address is 5489-98ec-f011, which of the following descriptions is correct?

The switch will send a destination unreachable message to the source device

The switch does not find a matching entry in the mac address table, so it will drop the frame

The switch needs to send a request to discover the device with the mac address 5489-98ec-f011

The switch will flood the frame on all ports except the port that received the frame

143. Which of the following is related to the purpose of encapsulation and decapsulation? (Multiple choice)

Shorten the length of the message

Encapsulation and decapsulation are important steps to realize different protocol functions

Interworking between different networks

Encapsulation and decapsulation can complete the location of network faults

144. Which of the following levels does not belong to the common network level in the medium-sized campus network architecture?

Network layer

Core layer

Aggregation layer

Access layer

145. What is used to identify wireless networks in WLAN and distinguish different wireless networks?

AP Name

SSID

VAP

BSSID

146. Which statement about OSPF protocol DR is correct?

DR election is preemptive

DR must be the device with the highest priority in the network

The greater the value of the Router ID, the more preferentially it is elected as the DR

If the priority of an interface is 0, then the interface cannot become the DR

147. VLAN4095 cannot be created on a Huawei switch, and VLAN1 cannot be deleted.

True

False

148. Which of the following descriptions about spanning tree designated ports is correct?

The port on the root switch must not be a designated port

The designated port can forward the configuration BPDU message to the network segment connected to it

Each switch has only one designated port

The designated port forwards the configuration BPDU message from this switch to the root switch

149. Both the pwd and dir commands in the VRP operating platform can view the file information in the current directory.

True

False

150. What is the first operation to be performed after the FIT AP obtains the IP address of the AC?

Establish a CAPWAP tunnel

Request a configuration file

Download configuration file

Upgrade the software version

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151. In the security assistance defense of Agile Controller, which description is correct about the security linkage components? (Multiple choice)

The log reporting device is undertaken by network devices, security devices, policy servers, and third-party systems in the middle of the network, and is mainly responsible for providing network information and security logs

Client devices are producers of network information and security logs

The linkage policy execution device is undertaken by the switch, which is mainly responsible for the security response of the linkage part of the equipment after the security time occurs, and is the equipment that executes the blocking or diversion strategy

The security assistance component of the Agile Controller is responsible for log collection and processing, event correlation, security situation display, and security response.

152. On Huawei routers, the value of the static routing protocol priority by default is?

120

100

60 _

153. FEC (Forwarding Equivalence Class) Forwarding Equivalence Class is a collection of data flows with certain commonality; FEC can be divided according to address, but not according to business type, QoS and other elements.

True

False

154. On Huawei AR G3 series routers , what authentication modes does AAA support? (Multiple choice)

HWTACACS

802.1x

None

Local

155. The output information of a router’s routing table is shown in the figure, which of the following statements is correct? (Multiple choice)

The outbound interface of this router reaching 10.0.0.1 is Ethernet0/0/1

The outbound interface of this router reaching 10.0.0.1 is Ethernet0/0/0

The outbound interface of this router reaching 10.0.2.2 is Ethernet0/0/0

The outbound interface of this router reaching 10.0.2.2 is Ethernet0/0/1

156. As shown in the figure, there is a web server in the private network that needs to provide HTTP services to users on the public network. Therefore, the network administrator needs to configure NAT on the gateway router RTA to meet the requirements. Which of the following configurations can meet the requirements?

[RTA-GigabitEthernet0/0/1] nat server protocol tcp global 202.10.10.1 www inside 192.168.1.1 8080

[RTA-Serial1/0/1] nat server protocol tcp global 202.10.10.1 www inside 192.168.1.1 8080

[RTA-GigabitEthernet0/0/1] nat server protocol tcp global 192.168.1.1 www inside 202.10.10.1 8080

[RTA-Serial1/0/1] nat server protocol tcp global 192.168.1.1 www inside 202.10.10.1 8080

157. Which message does the OSPF protocol use to describe its own LSDB?

LSR

LSU

HELLO

158. In the RSTP protocol, when an edge port receives a configuration BPDU message, it loses the edge port attribute.

True

False

159. Which of the following parameters does LCP negotiation use to detect link loops and other abnormal conditions?

CHAP

MRU

Magic word

PAP

160. How many planes does a network device have? (Multiple choice)

Business plane

Management plane

Control plane

Data plane

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161. Which statement about OSPF protocol area division is wrong?

Dividing OSPF areas can reduce the LSDB size of some routers

The LSDBs in the routers in the same OSPF area are completely consistent

Only ABR can be used as ASBR

Area 0 is the backbone area, and other areas must be connected to this area

162. What are the necessary conditions for configuring static routing? (Multiple choice)

Outgoing interface

Outgoing interface MAC address

Next hop

Destination IP

163. Which of the following message types does RADIUS use to indicate authentication rejection?

Access-Challenge

Access-Accept

Access-Request

Access-Reject

164. When the FIT AP goes online, it will definitely download the software version from the AC.

True

False

165. Which of the following descriptions about static and dynamic routing is wrong?

Dynamic routing protocols take up more system resources than static routing

After a link failure occurs, static routing can automatically complete network convergence

Static routing is easy to configure and easy to manage when it is applied in the enterprise

After the administrator deploys the dynamic routing protocol in the enterprise network, later maintenance and expansion can be more convenient

166. The classic network forwarding method is based on routing table forwarding, and the forwarding method of OpenFlow switch is based on flow table forwarding. Regarding these two forwarding methods, which statement is correct? (Multiple choice)

The matching method of the flow table is to match the MAC address and IP address of the traffic at the same time.

The routing table is of fixed length, and a device can only have one public routing table.

The flow table is variable in length, and a network device can only have one flow table.

The matching method of the routing table is to match the route of the destination network segment with the longest mask.

167. On a multi-point access network such as Ethernet, a PPPoE server can establish PPP connections with many PPPoE clients through one Ethernet port, so the server must establish a unique session identifier for each PPP session to distinguish different connections.

What parameters will PPPoE use to establish a session identifier?

IP address and MAC address

MAC address and PPP-ID

MAC address and Session-ID

MAC address

168. What advantages does the OSPF protocol have? (Multiple choice)

Division of Support Regions

OSPF supports load balancing for equal-cost routes

OSPF supports packet authentication

OSPF supports typeless inter-domain routing (CIDR)

169. In the network shown in the figure, which of the following configurations can realize that host A cannot access the HTTP service of host B, and host B cannot access the FTP service of host A? (Multiple choice)

acl number 3000 rule 5 deny tcp source 100.0.12.0 0.0.0.255 source-port eq www destination 100.0.13.0 0.0.0.255 # acl number 3001 rule 5 deny tcp source 100.0.13.0 0.0.0.255 source-port eq ftp destination 100.0.12.0 0.0.0.255 # Interface GigabitEthernet0/0/1 traffic-filter inbound acl 3000 # Interface GigabitEthernet0/0/2 traffic-filter inbound acl 3001 #

acl number 3000 rule 5 deny tcp source 100.0.13.0 0.0.0.255 destination 100.0.12.0 0.0.0.255 destination eq www # acl number 3001 rule 5 deny tcp source 100.0.12.0 0.0.0.255 destination 100.0.13.0 0.0.0.255 destination eq ftp # Interface GigabitEthernet0/0/1 traffic-filter inbound acl 3000 # Interface GigabitEthernet0/0/2 traffic-filter inbound acl 3001 #

170. Which of the following options describes the concept of NFV architecture correctly? (Multiple choice)

VNFM, virtual network function management, is responsible for the life cycle management of VNF

NFVO (NFV Orchestrator) is responsible for business orchestration

MANO consists of NFVO, VNFM and VIM

VIM (Virtualized Infrastructure Manager) virtual resource management, responsible for the virtualization of infrastructure

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171. Which of the following parameters are used in the spanning tree calculation of the switching network running the STP protocol? (Multiple choice)

Port ID

Forward Delay

Bridge ID

Root Path Cost

172. Which level of encapsulation format in the OSI reference model does the PPP protocol define?

Presentation layer

Application layer

Data Link Layer

Network layer

173. In standard STP mode, which port of the following non-root switch will forward the TC set BPDU generated by the root switch?

Specify port

Root port

Backup port

Preparatory port

174. What are the advantages of PQ+WFQ? (Multiple choice)

Messages with different priorities cannot be treated differently

It can ensure that low-latency services can be dispatched in time

Implement bandwidth allocation by weight

Realize the needs of flexible classification of messages according to user-defined

175. The configuration information of a certain port of the switch is as shown in the figure, so which VLAN data frames are sent by this port to carry VLAN TAG?

1,2,3,4,6,100

2,3,100

2,3,4,6,100

1,2,3,100

176. AAA does not contain which of the following?

Authorization

Accounting

Authentication

Audit

177. According to the following configuration, which of the following statements is correct? (Multiple choice)

int g0/0/1

port hybrid pvid vlan 20

port hybrid pvid vlan 10

int g0/0/2

port hybrid untagged vlan 10 20

port hybrid untagged vlan 10 20

Host A (PC3) can ping with host B (PC4)

The pvid of port G0/0/1 of the switch is 20

Both link data frames do not contain vlan tag

Host A (PC3) cannot ping host B (PC4)

178. Referring to the output results shown in the figure, it can be judged that the routing table of the router is composed of direct routes and static routes.

True

False

179. As shown in the figure below, which port of the following switch will be blocked?

G0/0/2 of SWC

G0/0/3 of SWA

G0/0/1 of SWC

G0/0/3 of SWB

180. By default, the bridge priority of the switch spanning tree is 32768 by default.

True

False

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181. What is the default ACL step size on AR G3 series routers?

182. Which of the following network parameters can be assigned by the Dynamic Host Configuration Protocol DHCP? (Multiple choice)

IP address

Gateway address

Operating system name

DNS address

183. With the topology shown in the figure and the configuration on the interconnection port of the switch, it can be judged that the data frame tagged with VLAN10 can be forwarded normally between the two switches?

True

False

184. The output information of the link aggregation port of a certain switch is shown in the figure. If you want to delete Eth-Trunk1, which of the following commands is correct?

interface GigabitEthernet0/0/2 undo eth-trunk quit undo interface Eth-Trunk 1

undo interface Eth-Trunk 1

interface GigabitEthernet0/0/1 undo eth-trunk quit undo interface Eth-Trunk 1

interface GigabitEthernet0/0/1 undo eth-trunk quit interface GigabitEthernet0/0/2 undo eth-trunk quit undo interface Eth-Trunk 1

185. According to the command shown in the figure, which of the following descriptions is correct? (Multiple choice)

The PVID of port GigabitEthernet0/0/1 is 1

The PVID of port GigabitEthernet0/0/2 is 1

The PVID of port GigabitEthernet0/0/2 is 10

The PVID of port GigabitEthernet0/0/1 is 10

186. There is a TTL field in the header of the IP packet. Which statement about this field is correct?

This field is used for data packet loop prevention

This field is used for packet fragmentation

This field is used to indicate the priority of the data packet

The length of this field is 7 bits

187. Which of the following refers to network communication? (Multiple choice)

Use instant messaging software (such as: QQ, WeChat) to chat with friends

Use a computer to visit the company's official website

Use a computer to watch videos online

Download emails from the company mailbox to your own computer

188. As shown in the figure below, which of the following statements is correct?

The broadcast addresses of host A and host B are the same

Host A can ping host B

Host A and host B cannot obtain each other's MAC address

The following entry 10.0.12.5 MAC-B exists in the ARP cache of host A

189. The network structure and OSPF partitions are shown in the figure. Except for RTA in the figure, routers RTB, RTC and RTD are all ABR routers.

True

False

190. In MPLS VPN, in order to distinguish IPv4 prefixes using the same address space, the RD value is added to the IPv4 address. Which of the following option descriptions is correct? (Multiple choice)

The RD is encapsulated in the Update message as an extended BGP attribute during transmission.

After the PE receives the IPv4 route from the CE, it adds RD to the IPv4 route and converts it into a globally unique VPN-IPv4 route, and publishes it on the public network.

Each VPN instance on the PE device corresponds to an RD value. On the same PE device, the RD must be globally unique.

RD can be used to control the release of VPN routing information

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191. What is the function of the command port trunk allowpass vlan all?

If the port default vlan3 command is configured for the connected remote device, the VLAN3 between the two devices cannot communicate.

The peer port connected to this port must be configured with port trunk permit vlan all at the same time

The connected peer device can dynamically determine which VLAN IDs are allowed to pass through

The port allows data frames of all VLANs to pass through

192. Which of the following statements about direct routing is correct?

Direct routes have lower priority than dynamic routes

Direct routing requires the administrator to manually configure the destination network and next-hop address

Direct routes have lower priority than static routes

The direct route has the highest priority

193. The data packets forwarded between two routers must not carry VLAN tags.

True

False

194. On the Huawei AR G3 router, the -i parameter of the Ping command in VRP is used to set?

The interface that sends the Echo Request message

The interface that receives the Echo Reply message

The source IP address of the Echo Request message

Receive the destination IP address of the Echo Reply message

195. For multiple paths to the same destination network, the router needs to select by comparing the value of Preference, and if the Preference is the same, select according to the value of Cost.

True

False

196. In the network shown in the figure, which of the following configurations can enable host A to access the Internet, but host B cannot? (Multiple choice)

acl number 2000 rule 5 deny source 100.0.12.0.0.0.0.255 rule 10 permit # interface GigabitEthernet0/0/3 traffic-filter outbound acl 2000 #

acl number 2000 rule 5 permit source 100.0.13.0.0.0.0.255 rule 10 deny source 100.0.12.0.0.0.0.255 # interface GigabitEthernet0/0/3 traffic-filter outbound acl 2000 #

acl number 2000 rule 5 permit source 100.0.13.0.0.0.0.255 rule 10 deny # interface GigabitEthernet0/0/3 traffic-filter outbound acl 2000 #

acl number 2000 rule 5 deny source 100.0.12.0.0.0.0.255 rule 10 permit source 100.0.13.0.0.0.0.255 # interface GigabitEthernet0/0/3 traffic-filter outbound acl 2000 #

197. What is the default server port number used by the Telnet protocol?

198. The management of users by NAS equipment is based on domains. Each user belongs to a domain. A domain is a group composed of users belonging to the same domain.

True

False

199. The figure shows the routing table of router R1. If R1 sends a data packet with the destination IP address 10.0.2.2, which interface does it need to send out?

Ethernet0/0/0

GigabitEthernet0/0/0

Ethernet0/0/2

Ethernet0/0/1

200. If the network address of a network is 192.168.1.0, then its broadcast address must be 192.168.1.255.

True

False

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201. Which of the following networks belong to the local area network? (Multiple choice)

A home network

Broadband MAN

A company's office network d. the internet

202. RSTP protocol uses P/A mechanism to speed up the speed of the upstream port to transfer to Forwarding state, but what is the reason why there is no temporary loop?

Through the synchronization mechanism to ensure that there will be no temporary loops

Shorten the time of Forward Delay

Speed up port role election

Introduced edge ports

203. What command can be typed in the system view to switch to the user view?

quit

souther

system-view

user-view

204. The router running the OSPF protocol first reaches the FULL state, and then performs LSDB synchronization.

True

False

205. When using the SNMPv1 protocol to manage network devices, which of the following commands does the network management system use to complete the configuration of the network devices?

Get-Request

Response

Set Request

Get-Next Request

206. Which of the following statements about link aggregation is correct? (Multiple choice)

To connect two devices, it is necessary to ensure that the link aggregation modes on both devices are consistent.

GE electrical interfaces and GE optical interfaces cannot be added to the same Eth-Trunk interface

Eth-Trunk interfaces cannot be nested

GE interfaces and FE interfaces cannot be added to the same Eth-Trunk interface

207. Which of the following is the range of manual setting of VRRP priority?

1~127

0~127

1~254

0~254

208. The QoS technology usually used for congestion avoidance is?

GTS

Car

WRED

209. When using eSight to view historical alarms, which of the following conditions can be used to filter alarms? (Multiple choice)

Warning level

Time of First Occurrence

Alarm source

Alarm name

210. Which command in the VRP system can access the last input command? (Multiple choice)

Left cursor

Cursor up

Ctrl+U

Ctrl+P

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211. The backup port in RSTP can replace the failed root port.

True

False

212. LACP protocol priority as shown in the figure, switch A and switch B adopt LACP mode link aggregation, and all interfaces are added to the link aggregation group, and the maximum number of active ports is set to 3, which port of switch A is not active port?

G0/0/0

G0/0/1

G0/0/2

G0/0/3

213. The transmission rate of an Eth-Trunk port in manual link aggregation mode is related to ()? (Multiple choice)

Whether the member port is in the public network or private network

Whether an IP address is configured on the member port

Bandwidth of member ports

Number of member ports

214. In the IEEE802.11 standard, which can support both the 2.4G frequency band and the 5G frequency band?

802.11a

802.11b

802.11g

802.11n

215. The bridge ID of the STP protocol in the switching network is as follows. Which of the following bridge ID switches will become the root bridge?

4096 00-01-02-03-04-DD

32768 00-01-02-03-04-AA

32768 00-01-02-03-04-BB

32768 00-01-02-03-04-CC

216. The network management workstation manages network devices through the SNMP protocol. When an abnormality occurs in the managed device, what kind of SNMP message will the network management workstation receive?

set-request message

trap message

get-response message

get-request message

217. When the STP protocol receives a configuration BPDU worse than its own, the designated port immediately sends its own BPDU downstream.

True

False

218. Only one SSID can be bound to one radio frequency of AP.

True

False

219. Which of the following protocol types does the OSPF protocol support? (Multiple choice)

Point-to-multipoint

Point-to-point type

Broadcast type

NBMA

220. If the application layer protocol is Telnet, what is the value of the Protocol field in the IPv4 header?

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221. During the establishment of a CAPWAP tunnel, after the AC receives the Join Request message sent by the AP, the AC will check the validity of the AP. Which of the following options are the authentication methods supported by the AC? (Multiple choice)

SN certification

Password authentication

MAC authentication

Not certified

222. Regarding the configuration shown in the picture, which statement is correct?

<Huawei>system-view

[Huawei] user-interface console 0

[Huavei-ui-console0] history-command max-size 20

history-command max-size 20 is to adjust the size of the history naming cache to 20

The default size of the historical command cache is 5 bytes

After the above configuration is completed, the historical command cache can save 20 bytes of commands

The default size of the historical command cache is 5

223. In the network shown in the figure, if the OSPFv3 protocol is enabled on all interfaces, RouterA and RouterB cannot establish an adjacency relationship.

True

False

224. The ICMP message does not contain the port number, so NAPT cannot be used.

True

False

225. What is the value of TPID defined by IEEE802.1Q?

0x9100

0x8200

0x7200

0x8100

226. As shown in the figure, it can be judged that 00e0-fc99-9999 is a specific host and MAC address learned by the switch through ARP, and the host has changed its IP address three times.

True

False

227. "The network administrator created VLAN 10 on the Layer 3 switch and configured an IP address under the virtual interface of this VLAN.

When using the command "display ip interface brief" to view the interface status, it is found that the VLANIF 10 interface is down, what should be done to restore the VLANIF 10 interface to normal?

Add a physical interface whose state must be Up to VLAN 10

Add an interface whose state must be Up and must be Trunk type into VLAN 10

Add any physical interface to VLAN 10

Use the command "undo shutdown" on the VLANIF 10 interface

228. What is the length of the Ethernet-II frame containing the Ethernet header?

40B-1500B

60B-1560B

64B-1500B

64B-1518B

229. The header length field of an IPv4 data packet is 20B, and the total length field is 1500B, so the payload of this data packet is?

1480B

1520B

20B

1500B

230. In order for the STA to obtain SSID-related information on the AP, which of the following messages does the AP use to actively declare the wireless network SSID information?

Join

Beacon

Discovery

Probe

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231. The following rules exist in an ACL of a router:

rule deny tcp source 192.168.2.0 0.0.0.255 destination 172.16.10.2 0.0.0.0

Which of the following statements is correct?

All TCP packets with source IP 192.168.2.1 and destination IP 172.16.10.1 match this rule

All TCP packets with source IP 192.168.2.1 and destination IP 172.16.10.2 match this rule

All TCP packets whose source IP is 172.16.10.2 and destination IP is 192.168.2.1 match this rule

All TCP packets whose source IP is 172.16.10.2 and destination IP is 192.168.2.0 match this rule

232. The network administrator finds that a certain port of the switch has learned the MAC address, but cannot forward data frames. Which of the following working states is this port in?

Listening

Disabled

Learning

Blocking

233. The host uses a stateless address auto-configuration scheme to obtain an IPv6 address, and cannot obtain DNS server address information.

True

False

234. Under the VRP interface, use the command startup saved-configuration backup.cfg to configure the backup.cfg file to be used at the next startup.

True

False

235. Compared with STP, which of the following port roles are newly defined in RSTP? (Multiple choice)

Root port

Backup port

Alternate port

Specify port

236. UDP cannot guarantee the reliability of data transmission, and does not provide functions such as message sorting and flow control. It is suitable for traffic that does not require high transmission reliability but requires high transmission speed and delay.

True

False

237. Which of the following statements about ASPF and Server-map is correct? (Multiple choice)

ASPF checks the application layer protocol information and monitors the application layer protocol status of the connection

ASPF dynamically generates ACL to determine whether the packet passes through the firewall

Configure NAT Server to generate a static Server-map

The Server-map table uses five-tuples to represent a session

238. On serial interfaces, static routing can be configured by specifying the next-hop address or outgoing interface.

True

False

239. Which of the following descriptions about wireless devices is correct?

Wireless devices do not have wired interfaces

FAT AP generally works with the wireless controller

FIT AP generally independently completes user access authentication service forwarding

The wireless controller AC is generally located at the aggregation layer of the entire network, providing high-speed, safe and reliable WLAN services

240. Which of the following IPv6 addresses is a link-local address?

FC00::2E0:FCFF:FEEF:FEC

FE80::2E0:FCFF:FEEF:FEC

2000::2E0:FCFF:FEEF:FEC

FF02::2E0:FCFF:FEEF:FEC

Page 25 of 27

241. After the switch running the RSTP protocol receives the BPDU with the TC set, it clears the MAC addresses learned by all ports.

True

False

242. Which of the following descriptions about routers is wrong?

A router can be used as a gateway device

Routers cannot isolate broadcast domains

The router works at the network layer

The router can forward IP packets

243. The configuration information of a certain port of the switch is shown in the figure, so when this port sends data frames carrying which VLANs, the VLAN TAG is stripped?

4,5,6

1,4,5,6

4,6

1,4,6

244. What are the stable states of the OSPF protocol neighbor relationship? (Multiple choice)

2-way

Full

Down

attempt

245. In the VRP system, what function does the Ctrl+Z key combination have? (Multiple choice)

Exit user view from any view

Exit interface view

Exit current view

Exit the console interface view

Return from system view to user view

246. When the network administrator of a company needs to plan the network, the data packets from PC1 to PC2 can be routed through port G0/0/0 (G0/0/2 in the figure). The data packets from PC2 to PC1 go through port G0/0/4 (G0/0/0 in the figure).

How to configure static routes on AR1 and AR2 to implement this function?

[AR1] ip route-static 10.0.12.5 255.255.255.255 11.0.12.6 [AR2] ip route-static 10.0.12.1 255.255.255.255 11.0.12.1

[AR1] ip route-static 10.0.12.5 255.255.255.255 11.0.12.2 [AR2] ip route-static 10.0.12.1 255.255.255.255 11.0.12.5

[AR1] ip route-static 0.0.0.0 0.0.0.0 0 11.0.12.6 [AR2] ip route-static 0.0.0.0 0.0.0.0 0 11.0.12.1

[AR1] ip route-static 0.0.0.0 0.0.0.0 0 11.0.12.2 [AR2] ip route-static 0.0.0.0 0.0.0.0 0 11.0.12.5

247. On the switch, vlan batch can be used to create vlans in batches to simplify configuration.

True

False

248. What is the IEEE802.11 standard corresponding to Wi-Fi6?

IEEE802.11au

IEEE802.11ac

IEEE802.11ax

IEEE802.11at

249. An OSPFv3 router adjacent to this router is an ABR.

True

False

250. During campus network planning, VLANs can be planned according to business types.

True

False

Page 26 of 27

251. When the host moves frequently, which VLAN division method is the most appropriate?

Based on port division

Based on IP subnetting

Based on MAC address division

Policy-based partitioning

252. In the network shown in the figure below, the host has an ARP cache. Which of the following statements is correct? (Multiple choice)

The following entry 10.0.12.2 MAC-C may appear in the ARP cache of host A

The router needs to be configured with static routing, otherwise host A and host B cannot communicate bidirectionally

Host A and host B can communicate bidirectionally

The following entry 11.0.12.1 MAC-B exists in the ARP cache of host A

253. In the network shown in the figure below, in the MAC address tables of SWA and SWB, which of the MAC address, VLAN, and port correspondences are correct? (Multiple choice)

SWB: MAC Address VLAN Port MAC-A 100 GE0/0/3 MAC-B 200 GE0/0/3 MAC-C 100 GE0/0/1

SWA: MAC Address VLAN Port MAC-A 10 GE0/0/1 MAC-B 20 GE0/0/2 MAC-C 100 GE0/0/3

SWB: MAC Address VLAN Port MAC-A 10 GE0/0/3 MAC-B 20 GE0/0/3 MAC-C 100 GE0/0/1

SWA: MAC Address VLAN Port MAC-A 10 GE0/0/3 MAC-B 20 GE0/0/3 MAC-C 100 GE0/0/3

254. Which of the following statements about the S field in the MPLS packet header is correct? (Multiple choice)

The S bit exists in each MPLS packet header

It is used to mark whether there are other labels after this label, 0 means yes, 1 means no

The S bit is only 1 bit in the frame mode and 2 bits in the cell mode

It is used to mark whether there are other labels after this label, 1 means yes, 0 means no

255. What is the total length of the VLAN frame defined by IEEE802.1Q?

256. Using the commands "vlan batch 10 20 " and "valn batch 10 to 20 ", what is the number of VLANs that can be created?

11 and 11

2 and 2

11 and 2

2 and 11

257. In the WLAN architecture, the Fit AP cannot work independently. AC unified management.

In which way can FIT AP and AC communicate?

WAP

IPSEC

CAPWAP

WEP

258. Which of the following advantages does the single-arm routing method achieve routing intercommunication between VLANs?

Reduce the number of link connections

Reduce the number of devices

Reduce routing table entries

Reduce the use of IP addresses

259. A switch running the STP protocol will only send a TCN BPDU when a port of the switch fails.

True

False

260. What are the correct descriptions of Ethernet subinterfaces? (Multiple choice)

The sub-interface cannot be configured with an IP address

A sub-interface can be bound to multiple VLANs

The IP addresses of the sub-interfaces cannot belong to the same network segment

The sub-interface ID must be the same as the VLAN ID

Page 27 of 27

261. IPCP dynamic address negotiation can automatically obtain an address.

True

False

262. Which of the following statements about the ACL matching mechanism is correct? (Multiple choice)

Which of the following statements about the ACL matching mechanism is correct?

If the ACL does not exist, the ACL matching result is returned: no match

If the last rule packet is still not matched, the ACL matching result will be returned: no match

By default, the search starts from the rule with the smallest number in the AC

Once a rule is matched, the search for subsequent rules is stopped.

No matter whether the result of the packet matching ACL is "mismatch", "permit" or "deny", whether the packet is finally allowed or denied is actually determined by each business module that applies the ACL

263. Which of the following descriptions about Trunk port and Access port is correct?

Trunk ports can only send untagged frames

The Access port can only send untagged frames

The Access port can only send tagged frames

Trunk ports can only send tagged frames

264. The sub-interface output information of a certain router aggregation port 1 is shown in the figure. According to this information, which of the following statements is correct? (Multiple choice)

The sub-interface number of the aggregation port is 100

The sub-interface of the aggregation port carries the VLAN when forwarding the data frame

There are two links on the aggregated port

The IP address of the sub-interface of the aggregation port is 10.0.12.2/24

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HCIA-Datacom V1.0 H12-811_V1.0 Sample Questions

HCIA-Datacom V1.0 H12-811_V1.0 Sample Questions

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