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  1. Home
  2. Snowflake Certification
  3. COF-C02 Exam
  4. Snowflake.COF-C02.v2026-01-13.q618 Dumps
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Question 526

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

Correct Answer: B
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Question 527

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

Correct Answer: C,E
The Snowflake Cloud Services layer manages various services, including authentication and metadata management. This layer ties together all the different components of Snowflake to process user requests, manage sessions, and control access3.
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Question 528

Snowflake recommends, as a minimize, that all users with the following roles(s) should be enrolled in Multi-Factor Authentication (MFA):

Correct Answer: B
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Question 529

To use the overwrite option on insert, which privilege must be granted to the role?

Correct Answer: B
To use the overwrite option on insert in Snowflake, the DELETE privilege must be granted to the role. This is because overwriting data during an insert operation implicitly involves deleting the existing data before inserting the new data.
* Understanding the Overwrite Option: The overwrite option (INSERT OVERWRITE) allows you to replace existing data in a table with new data. This operation is particularly useful for batch-loading scenarios where the entire dataset needs to be refreshed.
* Why DELETE Privilege is Required: Since the overwrite operation involves removing existing rows in the table, the executing role must have the DELETE privilege to carry out both the deletion of old data and the insertion of new data.
* Granting DELETE Privilege:
* To grant the DELETE privilege to a role, an account administrator can execute the following SQL command:
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GRANT DELETE ON TABLE my_table TO ROLE my_role;
Reference: For additional details on inserting data with the overwrite option and the required privileges, consult the Snowflake documentation on data loading: https://docs.snowflake.com/en/sql-reference/sql/insert.
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Question 530

A JSON file, that contains lots of dates and arrays, needs to be processed in Snowflake. The user wants to ensure optimal performance while querying the data.
How can this be achieved?

Correct Answer: B
Storing JSON data in a table with a VARIANT data type is optimal for querying because it allows Snowflake to leverage its semi-structured data capabilities. This approach enables efficient storage and querying without the need for flattening the data, which can be performance-intensive1.
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