Latest Snowflake COF-C02 Exam questions and answers
VCETorrent COF-C02 Exam Practice Test Questions (Updated 265 Questions)
The Snowflake COF-C02 (SnowPro Core Certification) exam is an essential certification for professionals who work with Snowflake's cloud data platform. The certification validates an individual's knowledge and skills in Snowflake's core concepts and architecture, enabling them to showcase their expertise to potential employers or clients. Passing this exam demonstrates a deep understanding of Snowflake's capabilities and the ability to apply them in real-world scenarios.
The Snowflake COF-C02 certification is a valuable certification for professionals working in the data warehousing and data analytics field. It validates the candidate's expertise in working with Snowflake's platform and provides them with the credentials they need to advance their career in this area. The certification is recognized by industry leaders and is a testament to the candidate's skills and knowledge in this field.
NEW QUESTION # 75
Which Snowflake objects track DML changes made to tables, like inserts, updates, and deletes?
- A. Procedures
- B. Streams
- C. Pipes
- D. Tasks
Answer: B
NEW QUESTION # 76
True or False: A third-party tool that supports standard JDBC or ODBC but has no Snowflake-specific driver will be unable to connect to Snowflake.
- A. False
- B. True
Answer: A
NEW QUESTION # 77
The number of queries that a Virtual Warehouse can concurrently process is determined by: Choose 2 answers
- A. The tool that s executing the query
- B. The size of the data required for each query
- C. The complexity of each query
- D. The CONCURRENT_QUERY_UMIT parameter set on the Snowflake account
Answer: B,C
NEW QUESTION # 78
How often are the Account and Table master keys automatically rotated by Snowflake?
- A. 90 Days
- B. 30 Days
- C. 365 Days.
- D. 60 Days
Answer: C
NEW QUESTION # 79
What is the maximum total Continuous Data Protection (CDP) charges incurred for a temporary table?
- A. 30 days
- B. 7 days
- C. 48 hours
- D. 24 hours
Answer: D
NEW QUESTION # 80
What features does Snowflake Time Travel enable?
- A. Restoring data-related objects that have been deleted within the past 90 days
- B. Analyzing data usage/manipulation over all periods of time
- C. Conducting point-in-time analysis for Bl reporting
- D. Querying data-related objects that were created within the past 365 days
Answer: A
Explanation:
Snowflake Time Travel enables accessing historical data (i.e. data that has been changed or deleted) at any point within a defined period. It serves as a powerful tool for performing the following tasks:
Restoring data-related objects (tables, schemas, and databases) that might have been accidentally or intentionally deleted.
Duplicating and backing up data from key points in the past.
Analyzing data usage/manipulation over specified periods of time.
https://docs.snowflake.com/en/user-guide/data-time-travel.html
NEW QUESTION # 81
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?
- A. Microsoft Authenticator
- B. Okta Verify
- C. Google Authenticator
- D. Duo Mobile
Answer: D
NEW QUESTION # 82
What is the MOST performant file format for loading data in Snowflake?
- A. CSV (Gzipped)
- B. ORC
- C. CSV (Unzipped)
- D. Parquet
Answer: C
NEW QUESTION # 83
A user has 10 files in a stage containing new customer dat
a. 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?
- A. The operation will fail with the error uncertain files in stage.
- B. All data from only the newly-added files will be appended to the table.
- C. Only data about new customers from the new files will be appended to the table
- D. All data from all of the files on the stage will be appended to the table
Answer: D
NEW QUESTION # 84
How long is the Fail-safe period for temporary and transient tables?
- A. 7 days
- B. 90 days
- C. There is no Fail-safe period for these tables.
- D. 31 days
- E. 1 day
Answer: C
NEW QUESTION # 85
A running virtual warehouse is suspended.
What is the MINIMUM amount of time that the warehouse will incur charges for when it is restarted?
- A. 1 second
- B. 60 minutes
- C. 60 seconds
- D. 5 minutes
Answer: C
NEW QUESTION # 86
Which tasks are performed in the Snowflake Cloud Services layer? (Choose two.)
- A. Computing the data
- B. Parsing and optimizing queries
- C. Maintaining Availability Zones
- D. Management of metadata
- E. Infrastructure security
Answer: B,D
NEW QUESTION # 87
What is the minimum Snowflake edition required to create a materialized view?
- A. Enterprise Edition
- B. Business Critical Edition
- C. Standard Edition
- D. Virtual Private Snowflake Edition
Answer: A
Explanation:
Materialized views require Enterprise Edition. To inquire about upgrading, please contact Snowflake Support
https://docs.snowflake.com/en/sql-reference/sql/create-materialized-view.html#:~:text=Materialized%20views%20require%20Enterprise%20Edition,upgrading%2C%20please%20contact%20Snowflake%20Support.
NEW QUESTION # 88
Which data types does Snowflake support when querying semi-structured data? (Select TWO)
- A. XML
- B. BLOB
- C. ARRAY
- D. VARIANT
- E. VARCHAR
Answer: C,D
Explanation:
https://docs.snowflake.com/en/user-guide/semistructured-intro.html#label-loading-semi-structured-data A VARIANT stores semi-structured data in Snowflake. It can store a value of any other type, including OBJECT and ARRAY.
The maximum length of a VARIANT is 16 MB.
A Snowflake ARRAY is similar to an array in many other programming languages. An ARRAY contains 0 or more pieces of data. Each element is accessed by specifying its position in the array.
NEW QUESTION # 89
True or False: A Snowflake account is charged for data stored in both Internal and External Stages.
- A. True
- B. False
Answer: A
NEW QUESTION # 90
Which of the following describes external functions in Snowflake?
- A. They contain their own SQL code.
- B. They call code that is stored inside of Snowflake.
- C. They are a type of User-defined Function (UDF).
- D. They can return multiple rows for each row received
Answer: C
Explanation:
External functions are user-defined functions that are stored and executed outside of Snowflake.
External functions make it easier to access external API services such as geocoders, machine learning models, and other custom code running outside of Snowflake. This feature eliminates the need to export and reimport data when using third-party services, significantly simplifying your data pipelines.
https://docs.snowflake.com/en/sql-reference/external-functions.html#:~:text=External%20functions%20are%20user%2Ddefined,code%20running%20outside%20of%20Snowflake.
NEW QUESTION # 91
Which SQL command can be used to see the CREATE definition of a masking policy?
- A. SHOW MASKING POLICIES
- B. LIST MASKING POLICIES
- C. GET_DDL
- D. DESCRIBE MASKING POLICY
Answer: C
NEW QUESTION # 92
What is the minimum Snowflake edition required for row level security?
- A. Enterprise
- B. Business Critical
- C. Standard
- D. Virtual Private Snowflake
Answer: A
NEW QUESTION # 93
Data storage for individual tables can be monitored using which commands and/or objects? (Choose two.)
- A. Information Schema -> TABLE_STORAGE_METRICS
- B. SHOW TABLES;
- C. Information Schema -> TABLE_FUNCTION
- D. SHOW STORAGE BY TABLE;
- E. Information Schema -> TABLE_HISTORY
Answer: A,D
NEW QUESTION # 94
Which account__usage views are used to evaluate the details of dynamic data masking? (Select TWO)
- A. ROLES
- B. POLICY_REFERENCES
- C. ACCESS_HISTORY
- D. RESOURCE_MONIT ORS
- E. QUERY_HISTORY
Answer: B,C
NEW QUESTION # 95
When reviewing the load for a warehouse using the load monitoring chart, the chart indicates that a high volume of Queries are always queuing in the warehouse According to recommended best practice, what should be done to reduce the Queue volume? (Select TWO).
- A. Use multi-clustered warehousing to scale out warehouse capacity.
- B. Stop and start the warehouse to clear the queued queries
- C. Migrate some queries to a new warehouse to reduce load
- D. Scale up the warehouse size to allow Queries to execute faster.
- E. Limit user access to the warehouse so fewer queries are run against it.
Answer: A,C
NEW QUESTION # 96
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