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Free Snowflake COF-C02 Exam 2025 Practice Materials Collection
The SnowPro Core Certification Exam covers a broad range of topics related to Snowflake, including data loading and unloading, data modeling, security, and performance optimization. COF-C02 exam is designed to test an individual's knowledge of Snowflake's features, functionality, and best practices. Individuals who pass the exam become certified SnowPro Core professionals, which demonstrates their mastery of essential Snowflake skills and their ability to work effectively with Snowflake's cloud-based data platform.
Snowflake COF-C02 (SnowPro Core Certification) Exam is a comprehensive certification exam designed to test an individual's knowledge and skills in the core concepts of Snowflake. SnowPro Core Certification Exam certification is intended for data professionals interested in demonstrating their expertise in using Snowflake to manage and analyze data. Achieving this certification is recognized and valued by organizations worldwide and can help individuals advance their careers in the data industry. Interested individuals can register and schedule their exams through the Snowflake certification portal.
NEW QUESTION # 425
When cloning a database, what is cloned with the database? (Choose two.)
- A. Privileges on the schemas within the database
- B. Only schemas and tables within the database
- C. Privileges on the database
- D. Future child objects within the database
- E. Existing child objects within the database
Answer: C,E
Explanation:
When cloning a database in Snowflake, the clone includes all privileges on the database as well as existing child objects within the database, such as schemas, tables, views, etc. However, it does not include future child objects or privileges on schemas within the database2.
References = [COF-C02] SnowPro Core Certification Exam Study Guide, Snowflake Documentation
NEW QUESTION # 426
Which column in the ACCESS_HISTORY view in Snowflake describes access history for a column and provides additional information on how columns have been altered over time?
- A. direct_objects_accessed
- B. base_objects_accessed
- C. objects_modified
- D. object_modified_by_dd1
Answer: C
NEW QUESTION # 427
Which items are considered schema objects in Snowflake? (Select TWO).
- A. Virtual warehouse
- B. File format
- C. Resource monitor
- D. Storage integration
- E. Pipe
Answer: B,E
Explanation:
In Snowflake, schema objects include Pipes and File formats. Pipes are used for continuous data loading, and File formats specify the format of data files used in loading and unloading operations within Snowflake
NEW QUESTION # 428
Which function is used to convert rows in a relational table to a single VARIANT column?
- A. OBJECT_CONSTRUCT
- B. ARRAY_CONSTRUCT
- C. ARRAY_AGG
- D. OBJECT_AGG
Answer: A
NEW QUESTION # 429
What is a benefit of using system tags?
- A. To support data governance
- B. To increase query execution speed
- C. To control data backup frequency
- D. To manage compute resources
Answer: A
Explanation:
System tags help enable data classification for governance, privacy, and compliance. For example, Snowflake uses system-defined tags like SNOWFLAKE.CORE.DATA_CLASSIFICATION to detect and label sensitive data (e.g., PII, financial info).
Reference:
Snowflake Docs: System Tags
NEW QUESTION # 430
Which function is used to unload a relational table into a JSON file*?
- A. JSON_EXTRACT_PATH_TEXT
- B. PARSE_JSON
- C. TO_JSON
- D. OBJECT_CONSTRUCT
Answer: C
Explanation:
The TO_JSON function in Snowflake is used to convert a relational table or individual rows into JSON format. This function is helpful for exporting data in JSON format.
* Using TO_JSON Function:
SELECT TO_JSON(OBJECT_CONSTRUCT(*))
FROM my_table;
* Exporting Data: The TO_JSON function converts the table rows into JSON format, which can then be exported to a file.
References:
* Snowflake Documentation: TO_JSON Function
* Snowflake Documentation: Exporting Data
NEW QUESTION # 431
What does a Query Profile metric that shows excessive spillage indicate?
- A. Improper Common Table Expressions (CTEs)
- B. Expired temporary tables
- C. Improper virtual warehouse sizing
- D. Poor query optimization
Answer: C
NEW QUESTION # 432
Which command can be used to unload data into an external named stage in Snowflake?
- A. COPY INTO <location>
- B. CREATE <object>
- C. PUT
- D. COPY INTO <table>
Answer: A
NEW QUESTION # 433
Query compilation occurs in which architecture layer of the Snowflake Cloud Data Platform?
- A. Compute layer
- B. Storage layer
- C. Cloud infrastructure layer
- D. Cloud services layer
Answer: A
Explanation:
For query execution, Snowflake uses the Virtual Warehouse. The query processing layer is separated from the disk storage layer in the Snowflake data architecture. You can use the data from the storage layer to run queries in this layer
https://www.projectpro.io/article/snowflake-architecture-what-does-snowflake-do/556#:~:text=Query%20Processing%20Layer%2FCompute%20Layer,run%20queries%20in%20this%20layer.
NEW QUESTION # 434
Which Snowflake feature allows a user to track sensitive data for compliance, discovery, protection, and resource usage?
- A. Internal tokenization
- B. Row access policies
- C. Tags
- D. Comments
Answer: C
Explanation:
Tags in Snowflake allow users to track sensitive data for compliance, discovery, protection, and resource usage. They enable the categorization and tracking of data, supporting compliance with privacy regulations678. Reference: [COF-C02] SnowPro Core Certification Exam Study Guide
NEW QUESTION # 435
Which privilege grants the ability to set a column-level security masking policy on a table or view column?
- A. CREATE
- B. SET
- C. MODIFY
- D. APPLY
Answer: D
Explanation:
In Snowflake, the APPLY privilege is required to set a masking policy on a table or view column. This privilege allows a user to associate a masking policy with a specific column, thereby controlling how data in that column is masked or hidden.
Create a Masking Policy: Define a masking policy using the CREATE MASKING POLICY command.
Grant APPLY Privilege: Grant the APPLY privilege on the masking policy to the relevant roles or users.
Apply the Masking Policy: Use the ALTER TABLE or ALTER VIEW command to apply the masking policy to a column.
Reference:
Snowflake Documentation: Data Masking
Snowflake Documentation: CREATE MASKING POLICY
Snowflake Documentation: Privileges for Masking Policies
NEW QUESTION # 436
By default, which role can create resource monitors?
- A. SECURITYADMIN
- B. SYSADMIN
- C. ACCOUNTADMIN
- D. USERADMIN
Answer: C
Explanation:
The role that can by default create resource monitors in Snowflake is the ACCOUNTADMIN role. Resource monitors are a crucial feature in Snowflake that allows administrators to track and control the consumption of compute resources, ensuring that usage stays within specified limits. The creation and management of resource monitors involve defining thresholds for credits usage, setting up notifications, and specifying actions to be taken when certain thresholds are exceeded.
Given the significant impact that resource monitors can have on the operational aspects and billing of a Snowflake account, the capability to create and manage them is restricted to the ACCOUNTADMIN role.
This role has the broadest set of privileges in Snowflake, including the ability to manage all aspects of the account, such as users, roles, warehouses, databases, and resource monitors, among others.
References:
* Snowflake Documentation on Resource Monitors: Managing Resource Monitors
NEW QUESTION # 437
How do Snowflake data providers share data that resides in different databases?
- A. User-Defined Functions (UDFs)
- B. External tables
- C. Secure views
- D. Materialized views
Answer: C
Explanation:
Snowflake data providers can share data residing in different databases through secure views. Secure views allow for the referencing of objects such as schemas, tables, and other views contained in one or more databases, as long as those databases belong to the same account. This enables providers to share data securely and efficiently with consumers. References: [COF-C02] SnowPro Core Certification Exam Study Guide
NEW QUESTION # 438
For non-materialized views, what column in Information Schema and Account Usage identifies whether a view is secure or not?
- A. TABLE_NAME
- B. IS_SECURE
- C. IS_UPDATEABLE
- D. CHECK_OPTION
Answer: B
Explanation:
In the Information Schema and Account Usage, the column that identifies whether a view is secure or not is IS_SECURE2.
NEW QUESTION # 439
Which Snowflake virtual warehouse configuration enables horizontal scaling?
- A. Increasing the WAREHOSE_SIZE.
- B. Increasing the MAX_CONCURRENCY_LEVEL.
- C. Increasing the MIN_CLUSTER_C0UNT.
- D. Increasing the MAX_CLUSTER_COUNT.
Answer: D
Explanation:
* In Snowflake, horizontal scaling refers to adding more compute clusters to a virtual warehouse to handle higher query concurrency.
* MAX_CLUSTER_COUNT determines the maximum number of clusters that can run simultaneously for a multi-cluster warehouse.
* Increasing this value allows Snowflake to dynamically scale the number of clusters based on query demand.
Why Other Options Are Incorrect:
* A. WAREHOUSE_SIZE: Increasing warehouse size changes the compute capacity of a single cluster (vertical scaling), not horizontal scaling.
* C. MAX_CONCURRENCY_LEVEL: This controls query queuing and is unrelated to scaling the number of clusters.
* D. MIN_CLUSTER_COUNT: This sets the minimum number of clusters but does not affect maximum horizontal scaling.
References:
* Multi-Cluster Warehouses
* Virtual Warehouse Scaling
NEW QUESTION # 440
What privileges are required to activate a network policy for an individual user within a Snowflake account?
- A. A user with a role that has been granted the ownership privilege on both the user and the network policy
- B. A user with a role that has been granted the CREATE NETWORK POLICY privilege
- C. A user with a role that has been granted the global ATTACH POLICY privilege
- D. A user with a role that has been granted the create session policy privilege
Answer: A
Explanation:
* To activate a network policy for an individual user, the user must have ownership privileges on both:
* The user account being modified.
* The network policy being attached.
Why Other Options Are Incorrect:
* A. Global ATTACH POLICY privilege: Snowflake does not have such a privilege.
* B. Create session policy privilege: This privilege does not exist in Snowflake.
* C. CREATE NETWORK POLICY privilege: This is required for creating network policies, not for attaching them to users.
References:
* Network Policies in Snowflake
NEW QUESTION # 441
The fail-safe retention period is how many days?
- A. 45 days
- B. 1 day
- C. 90 days
- D. 7 days
Answer: D
Explanation:
Fail-safe is a feature in Snowflake that provides an additional layer of data protection. After the Time Travel retention period ends, Fail-safe offers a non-configurable 7-day period during which historical data may be recoverable by Snowflake. This period is designed to protect against accidental data loss and is not intended for customer access.
References: Understanding and viewing Fail-safe | Snowflake Documentation
NEW QUESTION # 442
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Snowflake COF-C02: SnowPro Core Certification exam is a challenging and comprehensive exam that tests your skills and knowledge of Snowflake's cloud data warehousing platform. SnowPro Core Certification Exam certification is globally recognized and highly valued by employers seeking qualified professionals in the data warehousing field. With adequate preparation and practical experience, candidates can take and pass the exam to achieve their desired certification and propel their careers forward.
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