Free CWNA-108 Dumps Questions for Certified Wireless Network Administrator

Jonnie Karnath2023-07-26T08:41:14+00:00

CWNA-108 is an entry-level certification exam for Certified Wireless Network Administrator. If you’re preparing for the CWNA-108 exam, Certspots provides free online CWNA-108 dumps questions that can help you prepare for the exam. These CWNA-108 dumps questions cover a wide range of topics, including WLAN RF principles, network security, 802.11 protocols, and much more. The Certspots CWNA-108 Dumps Questions are designed to provide you with a comprehensive understanding of the exam content and format, so you can feel confident and fully prepared when you sit for the exam. With Certspots CWNA-108 Dumps Questions, you can access up-to-date and accurate exam questions, so you can maximize your chances of passing the exam on your first attempt.

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1. You are the network administrator for ABC Company. Your manager has recently attended a wireless security seminar. The seminar speaker taught that a wireless network could be hidden from potential intruders if you disabled the broadcasting of the SSID in Beacons and configured the access points not to respond to Probe Request frames that have a null SSID field.

Your manager suggests implementing these security practices.

What response should you give to this suggestion?

Any 802.11 protocol analyzer can see the SSID in clear text in frames other than Beacons frames. This negates any security benefit of trying to hide the SSID in Beacons and Probe Response frames.

To improve security by hiding the SSID, the AP and client stations must both be configured to remove the SSID from association request and response frames. Most WLAN products support this.

Any tenants in the same building using advanced penetration testing tools will be able to obtain the SSID by exploiting WPA EAPOL-Key exchanges. This poses an additional risk of exposing the WPA key.

This security practice prevents manufacturers’ client utilities from detecting the SSI

As a result, the SSID cannot be obtained by attackers, except through social engineering, guessing, or use of a WIP

2. What factor is likely to cause the least impact on the application layer throughput of an 802.11n client station in a 2.4 GHz HT BSS?

Increasing or decreasing the number of spatial streams in use by the client station and AP

Implementing Fast BSS Transition (FT) for roaming

Implementation of several other clients in the same BSS using 802.11g radios

RF interference from more than 10 nearby Bluetooth transmitters

3. 1.An RF signal sometimes bends as it passes through some material other than free space.

What is the term that describes this behavior?

Refraction

Warping

Scattering

Reflection

4. You are performing a post-implementation validation survey.

What basic tool can be used to easily locate areas of high co-channel interference?

Throughput tester

Laptop-based spectrum analyzer

Access point spectrum analyzer

Wi-Fi scanner

5. Lynne runs a small hotel, and as a value added service for his customers he has implemented a Wi-Fi hotspot. Lynne has read news articles about how hackers wait at hotspots trying to take advantage of unsuspecting users. He wants to avoid this problem at his hotel.

What is an efficient and practical step that Lynne can take to decrease the likelihood of active attacks on his customers’ wireless computers?

Enable station-to-station traffic blocking by the access points in the hotel.

Implement Network Access Control (NAC) and require antivirus and firewall software along with OS patches.

Implement an SSL VPN in the WLAN controller that initiates after HTTPS login.

Require EAP-FAST authentication and provide customers with a username/password on their receipt.

6. You are troubleshooting a client problem with a 2.4 GHz WLAN connection. The client is experiencing surprisingly low data rates during the work day. You analyze the workspace outside of business hours and detect a strong signal with a typical noise floor at the client location. During working hours, the user works with a laptop in the area and uses an external USB hard drive for continuous data access. The user also states that the laptop works as expected on her home network. The user working approximately 8 feet away from this client experiences no problems.

Based on this information, what is the likely cause of the problem?

The AP is overloaded during the work day

The drivers in the laptop are corrupt

The laptop has a failing wireless adapter

The external hard drive is USB 3.0 and is causing a significant increase in the noise floor when in use

7. When implementing PoE, what role is played by a switch?

PSE

Midspan injector

Power splitter

8. You were previously onsite at XYZ’s facility to conduct a pre-deployment RF site survey. The WLAN has been deployed according to your recommendations and you are onsite again to perform a post-deployment validation survey.

When performing this type of post-deployment RF site survey voice over Wi-Fi, what is an action that must be performed?

Spectrum analysis to locate and identify RF interference sources.

Frequency-band hopping analysis to detect improper RF channel implementations.

Application analysis with an active phone call on an VoWiFi handset.

Protocol analysis to discover channel use on neighboring APs.

9. What can an impedance mismatch in the RF cables and connectors cause?

Increased range of the RF signal

Fewer MCS values in the MCS table

Increased amplitude of the RF signal

Excessive VSWR

10. You have received a report of poor wireless connections on the third floor of a building under your administration. Three individuals have reported the problem. Apparently, the connections are reporting a strong signal, but the users cannot access the Internet.

With the problem identified, what is the next logical step in the troubleshooting process?

Verify the solution

Discover the scale of the problem

Perform corrective actions

Create a plan of action or escalate the problem

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11. To ease user complexity, your company has implemented a single SSID for all employees. However, the network administrator needs a way to control the network resources that can be accessed by each employee based in their department.

What WLAN feature would allow the network administrator to accomplish this task?

RBAC

WPA2

WIPS

SNMP

12. In addition to coverage analysis results, what should be included in a post-deployment site survey report to ensure WLAN users experience acceptable performance?

WAN interface analysis results

Capacity analysis results

Application Layer protocol availability analysis results

Layer 4 protocol availability analysis results

13. You are using a site survey tool for post-implementation validation. You have installed the appropriate adapter driver and imported a floor plan. Now, you want to take the next step in proper tool use.

What must you do before gathering survey data after the floor plan is imported?

Calibrate the floor plan

Install WinPCAP

Nothing, you can simply start capturing signal readings

Install iPerf

14. You are implementing a VHT-capable AP.

Which one of the following channels is available in the 802.112016 standard that was not available before the ratification of 802.11 ac?

161

153

144

15. When an ACK frame is not received by the transmitting STA, what is assumed?

The receiver processed the frame, but did not respond with an ACK frame because 802.11w is enabled

The frame was correctly delivered

The frame was not delivered and must be retransmitted

The receiver is offline

16. What statement is true concerning the use of Orthogonal Frequency Division Multiplexing (OFDM) modulation method in IEEE 802.11 WLANs?

OFDM implements BPSK modulation to allow for data rates up to 7 Gbps.

OFDM was first introduced in 802.11a and is used by the ERP, HT and VHT PHYs as well.

OFDM modulation is used only in 5 GHz 802.11 transmissions.

OFDM was used by Frequency Hopping Spread Spectrum (FHSS) PHY devices.

17. What statement about 802.3, Clause 33 Power over Ethernet is true?

When using CAT5 cabling, you increase the maximum draw available to the PD over that available with CAT6.

Only endpoint PSEs are supported.

Only midspan PSEs are supported.

The lowest voltage drop is achieved when using CAT6 cable instead of Cat5 or CAT5e.

18. What primary metric of scanning can stations use to select the best AP for connectivity to the desired BSS?

Signal strength of AP beacons received.

PING latency when testing against an Internet server.

Throughput speed in Mbps.

FCS errors in frames transmitted to and from the A

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Free CWNA-108 Dumps Questions for Certified Wireless Network Administrator

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