Snowflake COF-C02 Exam Dumps Options To Pass the Exam 2023

Jonnie Karnath2023-04-28T06:35:04+00:00

Snowflake COF-C02 exam dumps are an excellent tool for anyone preparing for the SnowPro Core Certification Exam exam. It covers all the topics and concepts that you need to know to pass the exam. They are designed by industry experts who have in-depth knowledge of the subject matter and can provide you with the most relevant and accurate information. Using Snowflake COF-C02 exam dumps will give you a realistic exam experience, as the questions are similar in format and difficulty to the actual exam questions. This will help you prepare better for the exam and reduce exam anxiety. It will also helps you identify your strengths and weaknesses and focus your study efforts accordingly.

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1. If a multi-cluster warehouse is using an economy scaling policy, how long will queries wait in the queue before another cluster is started?

1 minute

2 minutes

6 minutes

8 minutes

2. Which features could be used to improve the performance of queries that return a small subset of rows from a large table? (Select TWO).

Search optimization service

Automatic clustering

Row access policies

Multi-cluster virtual warehouses

Secure views

3. What is the difference between a stored procedure and a User-Defined Function (UDF)?

Stored procedures can execute database operations while UDFs cannot.

Returning a value is required in a stored procedure while returning values in a UDF is optional.

Values returned by a stored procedure can be used directly in a SQL statement while the values returned by a UDF cannot.

Multiple stored procedures can be called as part of a single executable statement while a single SQL statement can only call one UDF at a time.

4. By definition, a secure view is exposed only to users with what privilege?

IMPORT SHARE

OWNERSHIP

REFERENCES

USAGE

5. Which Snowflake layer is always leveraged when accessing a query from the result cache?

Metadata

Data Storage

Compute

Cloud Services

6. What is the minimum Snowflake edition required to create a materialized view?

Standard Edition

Enterprise Edition

Business Critical Edition

Virtual Private Snowflake Edition

7. The following JSON is stored in a VARIANT column called src of the CAR_SALES table:

A user needs to extract the dealership information from the JSON.

How can this be accomplished?

select src:dealership from car_sales;

select src.dealership from car_sales;

select src:Dealership from car_sales;

select dealership from car_sales;

8. What happens to historical data when the retention period for an object ends?

The data is cloned into a historical object.

The data moves to Fail-safe

Time Travel on the historical data is dropped.

The object containing the historical data is dropped.

9. Which Snowflake tool would be BEST to troubleshoot network connectivity?

SnowCLI

SnowUI

SnowSQL

SnowCD

10. The Snowflake Cloud Data Platform is described as having which of the following architectures?

Shared-disk

Shared-nothing

Multi-cluster shared data

Serverless query engine

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11. Granted the role PUBLIC the following privileges:

Usage on the warehouse, database, and schema, and SELECT on all the objects in the share

Based on this configuration what is true of the reader account?

The reader account will automatically use the Standard edition of Snowflake.

The reader account compute will be billed to the provider account.

The reader account can clone data the provider has shared, but cannot re-share it.

The reader account can create a copy of the shared data using CREATE TABLE A

12. Assume there is a table consisting of five micro-partitions with values ranging from A to Z.

Which diagram indicates a well-clustered table?

A)

Option A

Option B

Option C

Option D

13. Which of the following features are available with the Snowflake Enterprise edition? (Choose two.)

Database replication and failover

Automated index management

Customer managed keys (Tri-secret secure)

Extended time travel

Native support for geospatial data

14. A user has unloaded data from Snowflake to a stage.

Which SQL command should be used to validate which data was loaded into the stage?

list @file__stage

show @file__stage

view @file__stage

verify @file__stage

15. How should a virtual warehouse be configured if a user wants to ensure that additional multi-clusters are resumed with no delay?

Configure the warehouse to a size larger than generally required

Set the minimum and maximum clusters to autoscale

Use the standard warehouse scaling policy

Use the economy warehouse scaling policy

16. Users are responsible for data storage costs until what occurs?

Data expires from Time Travel

Data expires from Fail-safe

Data is deleted from a table

Data is truncated from a table

17. What is used to diagnose and troubleshoot network connections to Snowflake?

SnowCD

Snowpark

Snowsight

SnowSQL

18. The is the minimum Fail-safe retention time period for transient tables?

1 day

7 days

12 hours

0 days

19. Which parameter can be used to instruct a COPY command to verify data files instead of loading them into a specified table?

STRIP_NULL_VALUES

SKIP_BYTE_ORDER_MARK

REPLACE_INVALID_CHARACTERS

VALIDATION_MODE

20. Which kind of Snowflake table stores file-level metadata for each file in a stage?

Directory

External

Temporary

Transient

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21. A user needs to create a materialized view in the schema MYDB.MYSCHEMA.

Which statements will provide this access?

GRANT ROLE MYROLE TO USER USER1; GRANT CREATE MATERIALIZED VIEW ON SCHEMA MYD

MYSCHEMA TO ROLE MYROLE;

GRANT ROLE MYROLE TO USER USER1; GRANT CREATE MATERIALIZED VIEW ON SCHEMA MYD

MYSCHEMA TO USER USER1;

GRANT ROLE MYROLE TO USER USER1; GRANT CREATE MATERIALIZED VIEW ON SCHEMA MYD

K"-'SCHEMA TO USER! ;

GRANT ROLE MYROLE TO USER USER1; GRANT CREATE MATERIALIZED VIEW ON SCHEMA MYD

MYSCHEMA TO MYROLE;

22. The Snowflake Search Optimization Services supports improved performance of which kind of query?

Queries against large tables where frequent DML occurs

Queries against tables larger than 1 TB

Selective point lookup queries

Queries against a subset of columns in a table

23. Which Snowflake feature will allow small volumes of data to continuously load into Snowflake and will incrementally make the data available for analysis?

COPY INTO

CREATE PIPE

INSERT INTO

TABLE STREAM

24. Which of the following are handled by the cloud services layer of the Snowflake architecture? (Choose two.)

Query execution

Data loading

Time Travel data

Security

Authentication and access control

25. Which of the following describes how multiple Snowflake accounts in a single organization relate to various cloud providers?

Each Snowflake account can be hosted in a different cloud vendor and region.

Each Snowflake account must be hosted in a different cloud vendor and region

All Snowflake accounts must be hosted in the same cloud vendor and region

Each Snowflake account can be hosted in a different cloud vendor, but must be in the same region.

26. Which objects together comprise a namespace in Snowflake? (Select TWO).

Account

Database

Schema

Table

Virtual warehouse

27. A Snowflake user executed a query and received the results. Another user executed the same query 4 hours later. The data had not changed.

What will occur?

No virtual warehouse will be used, data will be read from the result cache.

No virtual warehouse will be used, data will be read from the local disk cache.

The default virtual warehouse will be used to read all data.

The virtual warehouse that is defined at the session level will be used to read all data.

28. Which of the following statements describes a schema in Snowflake?

A logical grouping of objects that belongs to a single database

A logical grouping of objects that belongs to multiple databases

A named Snowflake object that includes all the information required to share a database

A uniquely identified Snowflake account within a business entity

29. A user created a new worksheet within the Snowsight Ul and wants to share this with teammates How can this worksheet be shared?

Create a zero-copy clone of the worksheet and grant permissions to teammates

Create a private Data Exchange so that any teammate can use the worksheet

Share the worksheet with teammates within Snowsight

Create a database and grant all permissions to teammates

30. Which tasks are performed in the Snowflake Cloud Services layer? (Choose two.)

Management of metadata

Computing the data

Maintaining Availability Zones

Infrastructure security

Parsing and optimizing queries

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31. A running virtual warehouse is suspended.

What is the MINIMUM amount of time that the warehouse will incur charges for when it is restarted?

1 second

60 seconds

5 minutes

60 minutes

32. Which user object property requires contacting Snowflake Support in order to set a value for it?

DISABLED

MINS TO BYPASS MFA

MINS TO BYPASS NETWORK POLICY

MINS TO UNLOCK

33. Which statements are true concerning Snowflake's underlying cloud infrastructure? (Select THREE),

Snowflake data and services are deployed in a single availability zone within a cloud provider's region.

Snowflake data and services are available in a single cloud provider and a single region, the use of multiple cloud providers is not supported.

Snowflake can be deployed in a customer's private cloud using the customer's own compute and storage resources for Snowflake compute and storage

Snowflake uses the core compute and storage services of each cloud provider for its own compute and storage

All three layers of Snowflake's architecture (storage, compute, and cloud services) are deployed and managed entirely on a selected cloud platform

Snowflake data and services are deployed in at least three availability zones within a cloud provider's region

34. What types of data listings are available in the Snowflake Data Marketplace? (Choose two.)

Reader

Consumer

Vendor

Standard

Personalized

35. True or False: It is possible for a user to run a query against the query result cache without requiring an active Warehouse.

True

False

36. Which type of join will list a I rows in the specified table, even if those rows have no match in the other table?

Cross join

Inner join

Natural join

Outer join

37. Network policies can be applied to which of the following Snowflake objects? (Choose two.)

Roles

Databases

Warehouses

Users

Accounts

38. Which data type can store more than one type of data structure?

JSON

BINARY

VARCHAR

VARIANT

39. Query compilation occurs in which architecture layer of the Snowflake Cloud Data Platform?

Compute layer

Storage layer

Cloud infrastructure layer

Cloud services layer

40. How do Snowflake data providers share data that resides in different databases?

External tables

Secure views

Materialized views

User-Defined Functions (UDFs)

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41. What is the recommended file sizing for data loading using Snowpipe?

A compressed file size greater than 100 MB, and up to 250 MB

A compressed file size greater than 100 GB, and up to 250 GB

A compressed file size greater than 10 MB, and up to 100 MB

A compressed file size greater than 1 GB, and up to 2 GB

42. A virtual warehouse's auto-suspend and auto-resume settings apply to which of the following?

The primary cluster in the virtual warehouse

The entire virtual warehouse

The database in which the virtual warehouse resides

The Queries currently being run on the virtual warehouse

43. A user has 10 files in a stage containing new customer data.

The ingest operation completes with no errors, using the following command: COPY INTO my__table FROM @my__stage;

The next day the user adds 10 files to the stage so that now the stage contains a mixture of new

customer data and updates to the previous data. The user did not remove the 10 original files.

If the user runs the same copy into command what will happen?

All data from all of the files on the stage will be appended to the table

Only data about new customers from the new files will be appended to the table

The operation will fail with the error uncertain files in stage.

All data from only the newly-added files will be appended to the table.

44. Which of the following is the Snowflake Account_Usage.Metering_History view used for?

Gathering the hourly credit usage for an account

Compiling an account's average cloud services cost over the previous month

Summarizing the throughput of Snowpipe costs for an account

Calculating the funds left on an account's contract

45. Which command is used to unload files from an internal or external stage to a local file system?

COPY INTO

GET

PUT

TRANSFER

46. How long does Snowflake retain information in the ACCESS HISTORY view?

7 days

14 days

28 days

365 days

47. Which Snowflake object enables loading data from files as soon as they are available in a cloud storage location?

Pipe

External stage

Task

Stream

48. User INQUISITIVE_PERSON has been granted the role DATA_SCIENCE. The role DATA_SCIENCE has privileges OWNERSHIP on the schema MARKETING of the database ANALYTICS_DW.

Which command will show all privileges granted to that schema?

SHOW GRANTS ON ROLE DATA_SCIENCE

SHOW GRANTS ON SCHEMA ANALYTICS_D

MARKETING

SHOW GRANTS TO USER INQUISITIVE_PERSON

SHOW GRANTS OF ROLE DATA_SCIENCE

49. Which database objects can be shared with the Snowflake secure data sharing feature? (Choose two.)

Files

External tables

Secure User-Defined Functions (UDFs)

Sequences

Streams

50. A user has unloaded data from a Snowflake table to an external stage.

Which command can be used to verify if data has been uploaded to the external stage named my_stage?

view @my_stage

list @my_stage

show @my_stage

display @my_stage

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51. What can a Snowflake user do in the Admin area of Snowsight?

Analyze query performance.

Write queries and execute them.

Provide an overview of the listings in the Snowflake Marketplace.

Connect to Snowflake partners to explore extended functionality.

52. Which privilege must be granted to a share to allow secure views the ability to reference data in multiple databases?

CREATE_SHARE on the account

SHARE on databases and schemas

SELECT on tables used by the secure view

REFERENCE_USAGE on databases

53. What is an advantage of using an explain plan instead of the query profiler to evaluate the performance of a query?

The explain plan output is available graphically.

An explain plan can be used to conduct performance analysis without executing a query.

An explain plan will handle queries with temporary tables and the query profiler will not.

An explain plan's output will display automatic data skew optimization information.

54. What happens when a cloned table is replicated to a secondary database? (Select TWO)

A read-only copy of the cloned tables is stored.

The replication will not be successful.

The physical data is replicated

Additional costs for storage are charged to a secondary account

Metadata pointers to cloned tables are replicated

55. When loading data into Snowflake, how should the data be organized?

Into single files with 100-250 MB of compressed data per file

Into single files with 1-100 MB of compressed data per file

Into files of maximum size of 1 GB of compressed data per file

Into files of maximum size of 4 GB of compressed data per file

56. What can a Snowflake user do with the information included in the details section of a Query Profile?

Determine the total duration of the query.

Determine the role of the user who ran the query.

Determine the source system that the queried table is from.

Determine if the query was on structured or semi-structured data.

57. What COPY INTO SQL command should be used to unload data into multiple files?

SINGLE=TRUE

MULTIPLE=TRUE

MULTIPLE=FALSE

SINGLE=FALSE

58. How many resource monitors can be assigned at the account level?

59. In an auto-scaling multi-cluster virtual warehouse with the setting SCALING_POLICY = ECONOMY enabled, when is another cluster started?

When the system has enough load for 2 minutes

When the system has enough load for 6 minutes

When the system has enough load for 8 minutes

When the system has enough load for 10 minutes

60. What is the purpose of using the OBJECT_CONSTRUCT function with me COPY INTO command?

Reorder the rows in a relational table and then unload the rows into a file

Convert the rows in a relational table lo a single VARIANT column and then unload the rows into a file.

Reorder the data columns according to a target table definition and then unload the rows into the table.

Convert the rows in a source file to a single variant column and then load the rows from the file to a variant table.

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61. What are best practice recommendations for using the ACCOUNTADMIN system-defined role in Snowflake? (Choose two.)

Ensure all ACCOUNTADMIN roles use Multi-factor Authentication (MFA).

All users granted ACCOUNTADMIN role must be owned by the ACCOUNTADMIN role.

The ACCOUNTADMIN role must be granted to only one user.

Assign the ACCOUNTADMIN role to at least two users, but as few as possible.

All users granted ACCOUNTADMIN role must also be granted SECURITYADMIN role.

62. How would you determine the size of the virtual warehouse used for a task?

Root task may be executed concurrently (i.e. multiple instances), it is recommended to leave some margins in the execution window to avoid missing instances of execution

Querying (select) the size of the stream content would help determine the warehouse size. For example, if querying large stream content, use a larger warehouse size

If using the stored procedure to execute multiple SQL statements, it's best to test run the stored procedure separately to size the compute resource first

Since task infrastructure is based on running the task body on schedule, it's recommended to configure the virtual warehouse for automatic concurrency handling using Multi-cluster warehouse (MCW) to match the task schedule

63. In a Snowflake role hierarchy, what is the top-level role?

SYSADMIN

ORGADMIN

ACCOUNTADMIN

SECURITYADMIN

64. Which services does the Snowflake Cloud Services layer manage? (Choose two.)

Compute resources

Query execution

Authentication

Data storage

Metadata

65. What technique does Snowflake use to limit the number of micro-partitions scanned by each query?

B-tree

Indexing

Map reduce

Pruning

66. A company strongly encourages all Snowflake users to self-enroll in Snowflake's default Multi-Factor Authentication (MFA) service to provide increased login security for users connecting to Snowflake.

Which application will the Snowflake users need to install on their devices in order to connect with MFA?

Okta Verify

Duo Mobile

Microsoft Authenticator

Google Authenticator

67. Which Snowflake partner specializes in data catalog solutions?

Alation

DataRobot

dbt

Tableau

68. Which command can be used to stage local files from which Snowflake interface?

SnowSQL

Snowflake classic web interface (Ul)

Snowsight

.NET driver

69. What do the terms scale up and scale out refer to in Snowflake? (Choose two.)

Scaling out adds clusters of the same size to a virtual warehouse to handle more concurrent queries.

Scaling out adds clusters of varying sizes to a virtual warehouse.

Scaling out adds additional database servers to an existing running cluster to handle more concurrent queries.

Snowflake recommends using both scaling up and scaling out to handle more concurrent queries.

Scaling up resizes a virtual warehouse so it can handle more complex workloads.

Scaling up adds additional database servers to an existing running cluster to handle larger workloads.

70. Which statement describes how Snowflake supports reader accounts?

A reader account can consume data from the provider account that created it and combine it with its own data.

A consumer needs to become a licensed Snowflake customer as data sharing is only supported between Snowflake accounts.

The users in a reader account can query data that has been shared with the reader account and can perform DML tasks.

The SHOW MANAGED ACCOUNTS command will view all the reader accounts that have been created for an account.

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71. What statistical information in a Query Profile indicates that the query is too large to fit in memory? (Select TWO).

Bytes spilled to local cache.

Bytes spilled to local storage.

Bytes spilled to remote cache.

Bytes spilled to remote storage.

Bytes spilled to remote metastore.

72. Which features make up Snowflake's column level security? (Select TWO).

Continuous Data Protection (CDP)

Dynamic Data Masking

External Tokenization

Key pair authentication

Row access policies

73. Which Snowflake URL type is used by directory tables?

File

Pre-signed

Scoped

Virtual-hosted style

74. Which of the following is a valid source for an external stage when the Snowflake account is located on Microsoft Azure?

An FTP server with TLS encryption

An HTTPS server with WebDAV

A Google Cloud storage bucket

A Windows server file share on Azure

75. How long is Snowpipe data load history retained?

As configured in the create pipe settings

Until the pipe is dropped

64 days

14 days

76. What is the maximum Time Travel retention period for a temporary Snowflake table?

90 days

1 day

7 days

45 days

77. What service is provided as an integrated Snowflake feature to enhance Multi-Factor Authentication (MFA) support?

Duo Security

OAuth

Okta

Single Sign-On (SSO)

78. What is the recommended way to change the existing file format type in my format from CSV to JSON?

ALTER FILE FORMAT my_format SET TYPE=JSON;

ALTER FILE FORMAT my format SWAP TYPE WITH JSON;

CREATE OR REPLACE FILE FORMAT my format TYPE-JSON;

REPLACE FILE FORMAT my format TYPE-JSON;

79. When publishing a Snowflake Data Marketplace listing into a remote region what should be taken into consideration? (Choose two.)

There is no need to have a Snowflake account in the target region, a share will be created for each user.

The listing is replicated into all selected regions automatically, the data is not.

The user must have the ORGADMIN role available in at least one account to link accounts for replication.

Shares attached to listings in remote regions can be viewed from any account in an organization.

For a standard listing the user can wait until the first customer requests the data before replicating it to the target region.

80. What are common issues found by using the Query Profile? (Choose two.)

Identifying queries that will likely run very slowly before executing them

Locating queries that consume a high amount of credits

Identifying logical issues with the queries

Identifying inefficient micro-partition pruning

Data spilling to a local or remote disk

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81. Which native data types are used for storing semi-structured data in Snowflake? (Select TWO)

NUMBER

OBJECT

STRING

VARCHAR

VARIANT

82. Which of the following significantly improves the performance of selective point lookup queries on a table?

Clustering

Materialized Views

Zero-copy Cloning

Search Optimization Service

83. What are advantages clones have over tables created with CREATE TABLE AS SELECT statement? (Choose two.)

The clone always stays in sync with the original table.

The clone has better query performance.

The clone is created almost instantly.

The clone will have time travel history from the original table.

The clone saves space by not duplicating storage.

84. A materialized view should be created when which of the following occurs? (Choose two.)

There is minimal cost associated with running the query.

The query consumes many compute resources every time it runs.

The base table gets updated frequently.

The query is highly optimized and does not consume many compute resources.

The results of the query do not change often and are used frequently.

85. When is the result set cache no longer available? (Select TWO)

When another warehouse is used to execute the query

When another user executes the query

When the underlying data has changed

When the warehouse used to execute the query is suspended

When it has been 24 hours since the last query

86. How does Snowflake allow a data provider with an Azure account in central Canada to share data with a data consumer on AWS in Australia?

The data provider in Azure Central Canada can create a direct share to AWS Asia Pacific, if they are both in the same organization.

The data consumer and data provider can form a Data Exchange within the same organization to create a share from Azure Central Canada to AWS Asia Pacific.

The data provider uses the GET DATA workflow in the Snowflake Data Marketplace to create a share between Azure Central Canada and AWS Asia Pacific.

The data provider must replicate the database to a secondary account in AWS Asia Pacific within the same organization then create a share to the data consumer's account.

87. Which of the following describes how clustering keys work in Snowflake?

Clustering keys update the micro-partitions in place with a full sort, and impact the DML operations.

Clustering keys sort the designated columns over time, without blocking DML operations

Clustering keys create a distributed, parallel data structure of pointers to a table's rows and columns

Clustering keys establish a hashed key on each node of a virtual warehouse to optimize joins at run-time

88. What action can a user take to address query concurrency issues?

Enable the query acceleration service.

Enable the search optimization service.

Add additional clusters to the virtual warehouse

Resize the virtual warehouse to a larger instance size.

89. What does Snowflake recommend regarding database object ownership? (Select TWO).

Create objects with ACCOUNTADMIN and do not reassign ownership.

Create objects with SYSADMI

Create objects with SECURITYADMIN to ease granting of privileges later.

Create objects with a custom role and grant this role to SYSADMI

Use only MANAGED ACCESS SCHEMAS for66 objects owned by ACCOUNTADMI

90. Where can a user find and review the failed logins of a specific user for the past 30 days?

The USERS view in ACCOUNT_USAGE

The LOGIN_HISTORY view in ACCOUNT_USAGE

The ACCESS_HISTORY view in ACCOUNT_USAGE

The SESSIONS view in ACCOUNT_USAGE

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91. Credit charges for Snowflake virtual warehouses are calculated based on which of the following considerations? (Choose two.)

The number of queries executed

The number of active users assigned to the warehouse

The size of the virtual warehouse

The length of time the warehouse is running

The duration of the queries that are executed

92. What are ways to create and manage data shares in Snowflake? (Select TWO)

Through the Snowflake web interface (Ul)

Through the DATA_SHARE=TRUE parameter

Through SQL commands

Through the enable__share=true parameter

Using the CREATE SHARE AS SELECT * TABLE command

93. Which Snowflake objects can be shared with other Snowflake accounts? (Choose three.)

Schemas

Roles

Secure Views

Stored Procedures

Tables

Secure User-Defined Functions (UDFs)

94. A sales table FCT_SALES has 100 million records.

The following Query was executed

SELECT COUNT (1) FROM FCT__SALES;

How did Snowflake fulfill this query?

Query against the result set cache

Query against a virtual warehouse cache

Query against the most-recently created micro-partition

Query against the metadata excite

95. Which Snowflake SQL statement would be used to determine which users and roles have access to a role called MY_ROLE?

SHOW GRANTS OF ROLE MY_ROLE

SHOW GRANTS TO ROLE MY_ROLE

SHOW GRANTS FOR ROLE MY_ROLE

SHOW GRANTS ON ROLE MY_ROLE

96. Which of the following objects can be directly restored using the UNDROP command? (Choose two.)

Schema

View

Internal stage

Table

User

Role

97. True or False: Reader Accounts are able to extract data from shared data objects for use outside of Snowflake.

True

False

98. Which Snowflake technique can be used to improve the performance of a query?

Clustering

Indexing

Fragmenting

Using INDEX__HINTS

99. How does Snowflake recommend handling the bulk loading of data batches from files already available in cloud storage?

Use Snowpipe.

Use the INSERT command.

Use an external table.

Use the COPY command.

100. Files have been uploaded to a Snowflake internal stage. The files now need to be deleted.

Which SQL command should be used to delete the files?

PURGE

MODIFY

REMOVE

DELETE

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101. Which of the following are benefits of micro-partitioning? (Select TWO)

Micro-partitions cannot overlap in their range of values

Micro-partitions are immutable objects that support the use of Time Travel.

Micro-partitions can reduce the amount of I/O from object storage to virtual warehouses

Rows are automatically stored in sorted order within micro-partitions

Micro-partitions can be defined on a schema-by-schema basis

102. What MINIMUM privilege is required on the external stage for any role in the GET REST API to access unstructured data files using a file URL?

READ

OWNERSHIP

USAGK

WRTTF

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