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  • [2023年02月]更新のCOF-R02問題集には100%厳密検証された問題と解答で合格保証もしくは全額返金 [Q24-Q49]

[2023年02月]更新のCOF-R02問題集には100%厳密検証された問題と解答で合格保証もしくは全額返金 [Q24-Q49]

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[2023年02月]更新のCOF-R02問題集には100%厳密検証された問題と解答で合格保証もしくは全額返金

合格させるSnowflake COF-R02試験には練習テスト問題集豪華お試しセット

質問 24
What are common issues found by using the Query Profile? (Choose two.)

  • A. Data spilling to a local or remote disk
  • B. Identifying inefficient micro-partition pruning
  • C. Identifying logical issues with the queries
  • D. Locating queries that consume a high amount of credits
  • E. Identifying queries that will likely run very slowly before executing them

正解: B,E

 

質問 25
Which columns are part of the result set of the Snowflake LATERAL FLATTEN command? (Choose two.)

  • A. PATH
  • B. DATATYPE
  • C. INDEX
  • D. CONTENT
  • E. BYTE_SIZE

正解: A,E

 

質問 26
A user is preparing to load data from an external stage
Which practice will provide the MOST efficient loading performance?

  • A. Load the data in one large file
  • B. Use pattern matching for regular expression execution
  • C. Organize files into logical paths
  • D. Store the files on the external stage to ensure caching is maintained

正解: A

 

質問 27
In an auto-scaling multi-cluster virtual warehouse with the setting SCALING_POLICY = ECONOMY enabled, when is another cluster started?

  • A. When the system has enough load for 8 minutes
  • B. When the system has enough load for 2 minutes
  • C. When the system has enough load for 10 minutes
  • D. When the system has enough load for 6 minutes

正解: C

 

質問 28
Which command can be used to load data files into a Snowflake stage?

  • A. JOIN
  • B. PUT
  • C. COPY INTO
  • D. GET

正解: B

 

質問 29
True or False: It is possible for a user to run a query against the query result cache without requiring an active Warehouse.

  • A. True
  • B. False

正解: A

解説:
Explanation
Query result cache is all about fetching the data from cloud services layer and saving the cost by not running the virtual warehouse.

 

質問 30
Which of the following are best practices for loading data into Snowflake? (Choose three.)

  • A. Aim to produce data files that are between 100 MB and 250 MB in size, compressed.
  • B. Partition the staged data into large folders with random paths, allowing Snowflake to determine the best way to load each file.
  • C. Split large files into a greater number of smaller files to distribute the load among the compute resources in an active warehouse.
  • D. Enclose fields that contain delimiter characters in single or double quotes.
  • E. When planning which warehouse(s) to use for data loading, start with the largest warehouse possible.
  • F. Load data from files in a cloud storage service in a different region or cloud platform from the service or region containing the Snowflake account, to save on cost.

正解: D,E,F

 

質問 31
Which of the following statements are true of Virtual Warehouses? (Choose all that apply.)

  • A. A Warehouse can be configured to auto-resume when new queries are submitted
  • B. A Warehouse can be configured to suspend after a period of inactivity
  • C. Customers can change the size of the Warehouse after creation
  • D. A Warehouse can be resized while running

正解: A,B,C,D

解説:
Reference: https://docs.snowflake.com/en/user-guide/warehouses-multicluster.html

 

質問 32
What is the MOST performant file format for loading data in Snowflake?

  • A. CSV (Unzipped)
  • B. Parquet
  • C. ORC
  • D. CSV (Gzipped)

正解: A

 

質問 33
Which of the following statement is true of Snowflake?
Select one.

  • A. it was built as an on-premises solution and then potted to the cloud
  • B. It was designed as a hybrid database to allow customers to store data either on premises or in the cloud
  • C. It was built for Hadoop architecture
  • D. It was built specifically for the cloud
  • E. It's based on an Oracle Architecture

正解: D

 

質問 34
Why would a customer size a Virtual Warehouse from an X-Small to a Medium?

  • A. To accommodate a more complex workload
  • B. To accommodate fluctuations in workload
  • C. To accommodate more queries
  • D. To accommodate more users

正解: A

解説:
Reference: https://docs.snowflake.com/en/user-guide/warehouses-considerations.html

 

質問 35
Which Snowflake object enables loading data from files as soon as they are available in a cloud storage location?

  • A. Task
  • B. External stage
  • C. Pipe
  • D. Stream

正解: C

解説:
Explanation
Snowpipe enables loading data from files as soon as they're available in a stage. This means you can load data from files in micro-batches, making it available to users within minutes, rather than manually executing COPY statements on a schedule to load larger batches.
https://docs.snowflake.com/en/user-guide/data-load-snowpipe-intro.html

 

質問 36
Which of the following are handled by the cloud services layer of the Snowflake architecture? (Choose two.)

  • A. Query execution
  • B. Data loading
  • C. Time Travel data
  • D. Authentication and access control
  • E. Security

正解: B,E

 

質問 37
The Snowflake Cloud Data Platform is described as having which of the following architectures?

  • A. Serverless query engine
  • B. Shared-disk
  • C. Multi-cluster shared data
  • D. Shared-nothing

正解: C

 

質問 38
Which statement about billing applies to Snowflake credits?

  • A. Credits are used to pay for cloud data storage usage
  • B. Credits are consumed based on the number of credits billed for each hour that a warehouse runs
  • C. Credits are billed per-minute with a 60-minute minimum
  • D. Credits are consumed based on the warehouse size and the time the warehouse is running

正解: D

解説:
Explanation
Snowflake credits are used to pay for the consumption of resources on Snowflake. A Snowflake credit is a unit of measure, and it is consumed only when a customer is using resources, such as when a virtual warehouse is running, the cloud services layer is performing work, or serverless features are used.
https://docs.snowflake.com/en/user-guide/what-are-credits.html

 

質問 39
A user needs to create a materialized view in the schema MYDB.MYSCHEMA.
Which statements will provide this access?

  • A. GRANT ROLE MYROLE TO USER USER1;
    CREATE MATERIALIZED VIEW ON SCHEMA MYDB.MYSCHEMA TO MYROLE;
  • B. GRANT ROLE MYROLE TO USER USER1;
    CREATE MATERIALIZED VIEW ON SCHEMA MYDB.MYSCHEMA TO ROLE MYROLE;
  • C. GRANT ROLE MYROLE TO USER USER1;
    CREATE MATERIALIZED VIEW ON SCHEMA MYDB.MYSCHEMA TO USER USER1;
  • D. GRANT ROLE MYROLE TO USER USER1;
    CREATE MATERIALIZED VIEW ON SCHEMA MYDB.MYSCHEMA TO USER1;

正解: C

 

質問 40
What happens to the shared objects for users in a consumer account from a share, once a database has been created in that account?

  • A. The shared objects become accessible.
  • B. The shared objects are copied.
  • C. The shared objects can be re-shared.
  • D. The shared objects are transferred.

正解: B

 

質問 41
What is the default File Format used in the COPY command if one is not specified?

  • A. CSV
  • B. XML
  • C. JSON
  • D. Parquet

正解: A

解説:
Reference: https://docs.snowflake.com/en/sql-reference/sql/copy-into-location.html

 

質問 42
Network policies can be set at which Snowflake levels? (Choose two.)

  • A. User
  • B. Account
  • C. Role
  • D. Tables
  • E. Database
  • F. Schema

正解: A,B

解説:
Reference: https://docs.snowflake.com/en/user-guide/network-policies.html#creating-network-policies

 

質問 43
Which command should be used to load data from a file, located in an external stage, into a table in Snowflake?

  • A. INSERT
  • B. PUT
  • C. GET
  • D. COPY

正解: D

 

質問 44
True or False: Some queries can be answered through the metadata cache and do not require an active Virtual Warehouse.

  • A. True
  • B. False

正解: A

解説:
Explanation
Some aggregate queries are answered thru micro partitions metadata only not requiring any VW spin ups.

 

質問 45
Which database objects can be shared with the Snowflake secure data sharing feature? (Choose two.)

  • A. Secure User-Defined Functions (UDFs)
  • B. Sequences
  • C. Files
  • D. Streams
  • E. External tables

正解: A,E

 

質問 46
What are ways to create and manage data shares in Snowflake? (Select TWO)

  • A. Through SQL commands
  • B. Through the enable__share=true parameter
  • C. Through the DATA_SHARE=TRUE parameter
  • D. Using the CREATE SHARE AS SELECT * TABLE command
  • E. Through the Snowflake web interface (Ul)

正解: A,B

 

質問 47
What are the three layers that make up Snowflake's architecture?
Choose 3 answer

  • A. Tri-Secret Secure
  • B. Compute
  • C. Cloud Services
  • D. Storage

正解: B,C,D

解説:
Reference: https://docs.snowflake.com/en/user-guide/intro-key-concepts.html

 

質問 48
Will data cached in a warehouse be lost when the warehouse is resized?

  • A. Yes. became the new compute resource will no longer have access to the cache encryption key
  • B. Yes. because the compute resource is replaced in its entirety with a new compute resource.
  • C. No. because the size of the cache is independent from the warehouse size
  • D. Possibly, if the warehouse is resized to a smaller size and the cache no longer fits.

正解: D

 

質問 49
......

2023年最新の有効なCOF-R02テスト解答Snowflake試験PDF：https://www.passtest.jp/Snowflake/COF-R02-shiken.html

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