NEW 2024 Certification Sample Questions COF-C02 Dumps & Practice Exam
COF-C02 Deluxe Study Guide with Online Test Engine
Snowflake COF-C02 (SnowPro Core Certification) Exam is an assessment designed for individuals who have comprehensive knowledge and expertise in executing fundamental tasks with Snowflake. SnowPro Core Certification Exam certification is ideal for data professionals who want to demonstrate their proficiency in utilizing Snowflake's core functionality. By passing COF-C02 exam, the candidates will be able to distinguish themselves as certified Snowflake experts.
NEW QUESTION # 12
What happens to the underlying table data when a CLUSTER BY clause is added to a
Snowflake table?
- A. Data is hashed by the cluster key to facilitate fast searches for common data values
- B. Larger micro-partitions are created for common data values to reduce the number of partitions that must be scanned
- C. Smaller micro-partitions are created for common data values to allow for more parallelism
- D. Data may be colocated by the cluster key within the micro-partitions to improve pruning performance
Answer: D
NEW QUESTION # 13
What Snowflake role must be granted for a user to create and manage accounts?
- A. SYSADMIN
- B. ACCOUNTADMIN
- C. SECURITYADMIN
- D. ORGADMIN
Answer: B
Explanation:
https://docs.snowflake.com/en/user-guide/security-access-control-considerations.html
NEW QUESTION # 14
What SnowFlake database object is derived from a query specification, stored for later use, and can speed up expensive aggregation on large data sets?
- A. Secure view
- B. Temporary table
- C. External table
- D. Materialized view
Answer: D
NEW QUESTION # 15
How does a Snowflake user extract the URL of a directory table on an external stage for further transformation?
- A. Use the DESCRIBE STAGE command.
- B. Use the GET_ABSOLUTE_PATH function.
- C. Use the GET_STAGE_LOCATION function.
- D. Use the SHOW STAGES command.
Answer: B
NEW QUESTION # 16
Which statement accurately describes how a virtual warehouse functions?
- A. Each virtual warehouse is a compute cluster composed of multiple compute nodes allocated by Snowflake from a cloud provider.
- B. Each virtual warehouse is an independent compute cluster that shares compute resources with other warehouses.
- C. Increasing the size of a virtual warehouse will always improve data loading performance.
- D. All virtual warehouses share the same compute resources so performance degradation of one warehouse can significantly affect all the other warehouses.
Answer: A
NEW QUESTION # 17
Which of the following commands cannot be used within a reader account?
- A. DROP ROLE
- B. SHOW SCHEMAS
- C. DESCRBE TABLE
- D. ALTER WAREHOUSE
- E. CREATE SHARE
Answer: D
Explanation:
A reader account is intended primarily for querying data shared by the provider of the account. Adding new data to the account and/or updating shared data in the account is not supported. Changing the configuration of virtual warehouses is also not permitted as those resources are owned and managed by the provider of the account which is sharing the data.
NEW QUESTION # 18
Which Snowflake tool would be BEST to troubleshoot network connectivity?
- A. SnowSQL
- B. SnowCD
- C. SnowCLI
- D. SnowUI
Answer: B
Explanation:
https://docs.snowflake.com/en/user-guide/snowcd.html#:~:text=SnowCD%20(i.e.%20Snowflake%20Connectivity%20Diagnostic,their%20network%20connection%20to%20Snowflake.
NEW QUESTION # 19
If a Small Warehouse is made up of 2 servers/cluster, how many servers/cluster make up a Medium
Warehouse?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: D
NEW QUESTION # 20
The number of queries that a Virtual Warehouse can concurrently process is determined by: Choose 2 answers
- A. The CONCURRENT_QUERY_UMIT parameter set on the Snowflake account
- B. The tool that s executing the query
- C. The size of the data required for each query
- D. The complexity of each query
Answer: C,D
NEW QUESTION # 21
Which copy INTO command outputs the data into one file?
- A. MAX_FILE_NUMBER=1
- B. MULTIPLE=FAISE
- C. FILE_NUMBER=1
- D. SINGLE=TRUE
Answer: D
NEW QUESTION # 22
The VALIDATE table function has which parameter as an input argument for a Snowflake user?
- A. CURRENT_STATEMENT
- B. Last_QUERY_ID
- C. UUID_STRING
- D. JOB_ID
Answer: D
Explanation:
https://docs.snowflake.com/en/sql-reference/functions/validate
The VALIDATE table function accepts a table name and a JOB_ID as input arguments. The JOB_ID can be either a query ID for a COPY INTO <table> command or the keyword _last, which refers to the last load executed during the current session1. The other options are not valid input arguments for the VALIDATE table function.
NEW QUESTION # 23
What happens when a virtual warehouse is resized?
- A. When increasing the size of an active warehouse the compute resource for all running and queued queries on the warehouse are affected
- B. Users who are trying to use the warehouse will receive an error message until the resizing is complete
- C. The warehouse will be suspended while the new compute resource is provisioned and will resume automatically once provisioning is complete.
- D. When reducing the size of a warehouse the compute resources are removed only when they are no longer being used to execute any current statements.
Answer: D
NEW QUESTION # 24
Network policies can be set at which Snowflake levels? (Choose two.)
- A. Tables
- B. Database
- C. Account
- D. User
- E. Schema
- F. Role
Answer: C,D
Explanation:
Reference: https://docs.snowflake.com/en/user-guide/network-policies.html#creating-network-policies
NEW QUESTION # 25
True or False: A Virtual Warehouse can be resized while suspended.
- A. True
- B. False
Answer: A
NEW QUESTION # 26
What are ways to create and manage data shares in Snowflake? (Select TWO)
- A. Through the enable__share=true parameter
- B. Through SQL commands
- C. Through the DATA_SHARE=TRUE parameter
- D. Through the Snowflake web interface (Ul)
- E. Using the CREATE SHARE AS SELECT * TABLE command
Answer: A,B
NEW QUESTION # 27
True or False: Loading data into Snowflake requires that source data files be no larger than 16MB.
- A. True
- B. False
Answer: B
Explanation:
By default, COPY INTO location statements separate table data into a set of output files to take advantage of parallel operations. The maximum size for each file is set using the MAX_FILE_SIZE copy option. The default value is 16777216 (16 MB) but can be increased to accommodate larger files. The maximum file size supported is 5 GB for Amazon S3, Google Cloud Storage, or Microsoft Azure stages. To unload data to a single output file (at the potential cost of decreased performance), specify the SINGLE = true copy option in your statement. You can optionally specify a name for the file in the path.
NEW QUESTION # 28
Which statement describes how Snowflake supports reader accounts?
- A. A reader account can consume data from the provider account that created it and combine it with its own data.
- B. The SHOW MANAGED ACCOUNTS command will view all the reader accounts that have been created for an account.
- C. A consumer needs to become a licensed Snowflake customer as data sharing is only supported between Snowflake accounts.
- D. The users in a reader account can query data that has been shared with the reader account and can perform DML tasks.
Answer: D
NEW QUESTION # 29
Which data types optimally store semi-structured data? (Select TWO).
- A. ARRAY
- B. CHARACTER
- C. STRING
- D. VARIANT
- E. VARCHAR
Answer: A,D
NEW QUESTION # 30
What is the MINIMUM edition of Snowflake that is required to use a SCIM security integration?
- A. Business Critical Edition
- B. Enterprise Edition
- C. Virtual Private Snowflake (VPS)
- D. Standard Edition
Answer: B
NEW QUESTION # 31
What are advantages clones have over tables created with CREATE TABLE AS SELECT statement? (Choose two.)
- A. The clone always stays in sync with the original table.
- B. The clone has better query performance.
- C. The clone saves space by not duplicating storage.
- D. The clone is created almost instantly.
- E. The clone will have time travel history from the original table.
Answer: C,D
NEW QUESTION # 32
What is a limitation of a Materialized View?
- A. A Materialized View can only reference up to two tables
- B. A Materialized View cannot support any aggregate functions
- C. A Materialized View cannot be joined with other tables
- D. A Materialized View cannot be defined with a JOIN
Answer: D
Explanation:
There are several limitations to using materialized views:
A materialized view can query only a single table.
Joins, including self-joins, are not supported.
NEW QUESTION # 33
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Snowflake COF-C02 (SnowPro Core Certification) Certification Exam is a valuable certification for professionals who work with Snowflake. It is designed to validate one’s expertise in using Snowflake and is recognized by organizations worldwide. SnowPro Core Certification Exam certification exam covers a wide range of topics, from Snowflake architecture and data warehousing to data loading and unloading. It is an excellent way to demonstrate one’s proficiency in using Snowflake and to enhance one’s career prospects.
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