Name: SnowPro Core Certification Exam
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SKU: COF-C02
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Free Snowflake COF-C02 Exam Actual Questions

The questions for COF-C02 were last updated On Apr 20, 2025

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Question No. 1

True or False: A 4X-Large Warehouse may, at times, take longer to provision than a X-Small Warehouse.

ATrue

BFalse

Show Answer

Correct Answer: A

Provisioning time can vary based on the size of the warehouse. A4X-Large Warehousetypically has more resources and may take longer to provision compared to aX-Small Warehouse, which has fewer resources and can generally be provisioned more quickly.References:Understanding and viewing Fail-safe | Snowflake Documentation

Question No. 2

Which of the following statements describe features of Snowflake data caching? (Choose two.)

AWhen a virtual warehouse is suspended, the data cache is saved on the remote storage layer.

BWhen the data cache is full, the least-recently used data will be cleared to make room.

CA user can only access their own queries from the query result cache.

DA user must set USE_METADATA_CACHE to TRUE to use the metadata cache in queries.

EThe RESULT_SCAN table function can access and filter the contents of the query result cache.

Show Answer

Correct Answer: B, E

Snowflake's data caching features include the ability to clear the least-recently used data when the data cache is full to make room for new data. Additionally, the RESULT_SCAN table function can access and filter the contents of the query result cache, allowing users to retrieve and work with the results of previous queries. The other statements are incorrect: the data cache is not saved on the remote storage layer when a virtual warehouse is suspended, users can access queries from the query result cache that were run by other users, and there is no setting called USE_METADATA_CACHE in Snowflake. References:Caching in the Snowflake Cloud Data Platform,Optimizing the warehouse cache

Question No. 3

What happens to the privileges granted to Snowflake system-defined roles?

AThe privileges cannot be revoked.

BThe privileges can be revoked by an ACCOUNTADMIN.

CThe privileges can be revoked by an orgadmin.

DThe privileges can be revoked by any user-defined role with appropriate privileges.

Show Answer

Correct Answer: A

The privileges granted to Snowflake's system-defined roles cannot be revoked. System-defined roles, such as SYSADMIN, ACCOUNTADMIN, SECURITYADMIN, and others, come with a set of predefined privileges that are essential for the roles to function correctly within the Snowflake environment. These privileges are intrinsic to the roles and ensure that users assigned these roles can perform the necessary tasks and operations relevant to their responsibilities.

The design of Snowflake's role-based access control (RBAC) model ensures that system-defined roles have a specific set of non-revocable privileges to maintain the security, integrity, and operational efficiency of the Snowflake environment. This approach prevents accidental or intentional modification of privileges that could disrupt the essential functions or compromise the security of the Snowflake account.

References:

Snowflake Documentation on Access Control: Understanding Role-Based Access Control (RBAC)

Question No. 4

What criteria does Snowflake use to determine the current role when initiating a session? (Select TWO).

AIf a role was specified as part of the connection and that role has been granted to the Snowflake user, the specified role becomes the current role.

BIf no role was specified as part of the connection and a default role has been defined for the Snowflake user, that role becomes the current role.

CIf no role was specified as part of the connection and a default role has not been set for the Snowflake user, the session will not be initiated and the log in will fail.

DIf a role was specified as part of the connection and that role has not been granted to the Snowflake user, it will be ignored and the default role will become the current role.

EIf a role was specified as part of the connection and that role has not been granted to the Snowflake user, the role is automatically granted and it becomes the current role.

Show Answer

Correct Answer: A, B

When initiating a session in Snowflake, the system determines the current role based on the user's connection details and role assignments. If a user specifies a role during the connection, and that role is already granted to them, Snowflake sets it as the current role for the session. Alternatively, if no role is specified during the connection, but the user has a default role assigned, Snowflake will use this default role as the current session role. These mechanisms ensure that users operate within their permissions, enhancing security and governance within Snowflake environments.

References:

Snowflake Documentation: Understanding Roles

Question No. 5

How should clustering be used to optimize the performance of queries that run on a very large table?

AManually re-cluster the table regularly.

BChoose one high cardinality column as the clustering key.

CUse the column that is most-frequently used in query select clauses as the clustering key.

DAssess the average table depth to identify how clustering is impacting the query.

Show Answer

Correct Answer: B

For optimizing the performance of queries that run on a very large table, it is recommended to choose one high cardinality column as the clustering key.This helps to co-locate similar rows in the same micro-partitions, improving scan efficiency in queries by skipping data that does not match filtering predicates4.

References:[COF-C02] SnowPro Core Certification Exam Study Guide