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COF-C02 dumps and 715 unique questions
Snowflake COF-C02 (SnowPro Core Certification) Exam is a comprehensive examination designed to assess the skills and knowledge of individuals in the field of data warehousing and analytics using the Snowflake platform. SnowPro Core Certification Exam certification exam is intended for professionals who are looking to validate their expertise in Snowflake's core concepts, architecture, and functionalities. It is an ideal certification for data engineers, data analysts, data architects, and other IT professionals who are involved in managing and analyzing data.
Snowflake COF-C02 (SnowPro Core Certification) Certification Exam is a highly sought-after certification in the field of data warehousing and cloud-based data management. SnowPro Core Certification Exam certification exam is designed to validate the knowledge and skills of candidates in various aspects of Snowflake, including its architecture, administration, development, and data loading.
NEW QUESTION # 396
What happens to historical data when the retention period for an object ends?
- A. Time Travel on the historical data is dropped.
- B. The data moves to Fail-safe
- C. The data is cloned into a historical object.
- D. The object containing the historical data is dropped.
Answer: A
Explanation:
When the retention period for an object ends in Snowflake, Time Travel on the historical data is dropped
. This means that the ability to access historical data via Time Travel is no longer available once the retention period has expired2.
NEW QUESTION # 397
User INQUISITIVE_PERSON has been granted the role DATA_SCIENCE. The role DATA_SCIENCE has privileges OWNERSHIP on the schema MARKETING of the database ANALYTICS_DW.
Which command will show all privileges granted to that schema?
- A. SHOW GRANTS ON ROLE DATA_SCIENCE
- B. SHOW GRANTS OF ROLE DATA_SCIENCE
- C. SHOW GRANTS TO USER INQUISITIVE_PERSON
- D. SHOW GRANTS ON SCHEMA ANALYTICS_DW.MARKETING
Answer: D
Explanation:
To show all privileges granted to a specific schema, the command SHOW GRANTS ON SCHEMA <schema_name> should be used3. In this case, it would be SHOW GRANTS ON SCHEMA ANALYTICS_DW.MARKETING. Reference: [COF-C02] SnowPro Core Certification Exam Study Guide
NEW QUESTION # 398
Which of the following Snowflake features provide continuous data protection automatically? (Select TWO).
- A. Fail-safe
- B. Internal stages
- C. Incremental backups
- D. Zero-copy clones
- E. Time Travel
Answer: A,E
NEW QUESTION # 399
Which Snowflake layer is associated with virtual warehouses?
- A. Cloud services
- B. Query processing
- C. Database storage
- D. Elastic memory
Answer: B
Explanation:
The layer of Snowflake's architecture associated with virtual warehouses is the Query Processing layer. Virtual warehouses in Snowflake are dedicated compute clusters that execute SQL queries against the stored data.
This layer is responsible for the entire query execution process, including parsing, optimization, and the actual computation. It operates independently of the storage layer, enabling Snowflake to scale compute and storage resources separately for efficiency and cost-effectiveness.
References:
* Snowflake Documentation: Snowflake Architecture
NEW QUESTION # 400
Which Snowflake feature is used for both querying and restoring data?
- A. Fail-safe
- B. Cluster keys
- C. Cloning
- D. Time Travel
Answer: D
Explanation:
Snowflake's Time Travel feature is used for both querying historical data in tables and restoring and cloning historical data in databases, schemas, and tables3. It allows users to access historical data within a defined period (1 day by default, up to 90 days for Snowflake Enterprise Edition) and is a key feature for data recovery and management. Reference: [COF-C02] SnowPro Core Certification Exam Study Guide
NEW QUESTION # 401
A Snowflake Administrator needs to ensure that sensitive corporate data in Snowflake tables is not visible to end users, but is partially visible to functional managers.
How can this requirement be met?
- A. Use data encryption.
- B. Use dynamic data masking.
- C. Use secure materialized views.
- D. Revoke all roles for functional managers and end users.
Answer: B
Explanation:
Dynamic data masking is a feature in Snowflake that allows administrators to define masking policies to protect sensitive data. It enables partial visibility of the data to certain roles, such as functional managers, while hiding it from others, like end users
NEW QUESTION # 402
Which function unloads data from a relational table to JSON?
- A. OBJECT CONSTRUCT
- B. TO_OBJECT
- C. TO_VARIANT
- D. TO_JSON
Answer: D
Explanation:
The TO_JSON function is used to convert a VARIANT value into a string containing the JSON representation of the value. This function is suitable for unloading data from a relational table to JSON format.
References: [COF-C02] SnowPro Core Certification Exam Study Guide.
NEW QUESTION # 403
Which command should be used to download files from a Snowflake stage to a local folder on a client's machine?
- A. GET
- B. COPY
- C. SELECT
- D. PUT
Answer: A
NEW QUESTION # 404
What causes objects in a data share to become unavailable to a consumer account?
- A. The DATA_RETENTI0N_TIME_IN_DAYS parameter in the consumer account is set to 0.
- B. The consumer account acquires the data share through a private data exchange.
- C. The consumer account runs the GRANT IMPORTED PRIVILEGES command on the data share every
24 hours. - D. The objects in the data share are being deleted and the grant pattern is not re-applied systematically.
Answer: D
Explanation:
Objects in a data share become unavailable to a consumer account if the objects in the data share are deleted or if the permissions on these objects are altered without re-applying the grant permissions systematically. This is because the sharing mechanism in Snowflake relies on explicit grants of permissions on specific objects (like tables, views, or secure views) to the share. If these objects are deleted or if their permissions change without updating the share accordingly, consumers can lose access.
The DATA_RETENTION_TIME_IN_DAYS parameter does not directly affect the availability of shared objects, as it controls how long Snowflake retains historical data for time travel and does not impact data sharing permissions.
Running the GRANT IMPORTED PRIVILEGES command in the consumer account is not related to the availability of shared objects; this command is used to grant privileges on imported objects within the consumer's account and is not a routine maintenance command that would need to be run regularly.
Acquiring a data share through a private data exchange does not inherently make objects unavailable; issues would only arise if there were problems with the share configuration or if the shared objects were deleted or had their permissions altered without re-granting access to the share.
Reference: Snowflake Documentation on Managing Access to Shared Data
(https://docs.snowflake.com/en/user-guide/data-sharing-consuming.html#managing-access-to-shared-data)
NEW QUESTION # 405
Which of the following indicates that it may be appropriate to use a clustering key for a table? (Select TWO).
- A. The table contains a column that has very low cardinality
- B. The table has a small number of micro-partitions
- C. DML statements that are being issued against the table are blocked
- D. Queries on the table are running slower than expected
- E. The clustering depth for the table is large
Answer: D,E
Explanation:
A clustering key in Snowflake is used to co-locate similar data within the same micro-partitions to improve query performance, especially for large tables where data is not naturally ordered or has become fragmented due to extensive DML operations. The appropriate use of a clustering key can lead to improved scan efficiency and better column compression, resulting in faster query execution times.
The indicators that it may be appropriate to use a clustering key for a table include:
D . Queries on the table are running slower than expected: This can happen when the data in the table is not well-clustered, leading to inefficient scans during query execution.
E . The clustering depth for the table is large: A large clustering depth indicates that the table's data is spread across many micro-partitions, which can degrade query performance as more data needs to be scanned.
Reference:
Snowflake Documentation on Clustering Keys & Clustered Tables
Snowflake Documentation on SYSTEM$CLUSTERING_INFORMATION
Stack Overflow discussion on cluster key selection in Snowflake
NEW QUESTION # 406
A marketing co-worker has requested the ability to change a warehouse size on their medium virtual warehouse called mktg__WH.
Which of the following statements will accommodate this request?
- A. GRANT OPERATE ON WAREHOUSE MKTG WH TO ROLE MARKETING;
- B. ALLOW RESIZE ON WAREHOUSE MKTG__WH TO USER MKTG__LEAD;
- C. GRANT MODIFY ON WAREHOUSE MKTG WH TO ROLE MARKETING;
- D. GRANT MODIFY ON WAREHOUSE MKTG__WH TO USER MKTG__LEAD;
Answer: C
NEW QUESTION # 407
Which Snowflake table objects can be shared with other accounts? (Select TWO).
- A. Permanent tables
- B. User-Defined Table Functions (UDTFs)
- C. External tables
- D. Temporary tables
- E. Transient tables
Answer: A,C
Explanation:
In Snowflake, permanent tables and external tables can be shared with other accounts using Secure Data Sharing. Temporary tables, transient tables, and UDTFs are not shareable objects
NEW QUESTION # 408
What happens to the underlying table data when a CLUSTER BY clause is added to a Snowflake table?
- A. Data may be colocated by the cluster key within the micro-partitions to improve pruning performance
- B. Larger micro-partitions are created for common data values to reduce the number of partitions that must be scanned
- C. Data is hashed by the cluster key to facilitate fast searches for common data values
- D. Smaller micro-partitions are created for common data values to allow for more parallelism
Answer: A
NEW QUESTION # 409
Which is the MINIMUM required Snowflake edition that a user must have if they want to use AWS/Azure Privatelink or Google Cloud Private Service Connect?
- A. Standard
- B. Enterprise
- C. Premium
- D. Business Critical
Answer: D
Explanation:
https://docs.snowflake.com/en/user-guide/privatelink-azure.html
NEW QUESTION # 410
Which Snowflake table supports unstructured data?
- A. Temporary
- B. Directory
- C. Transient
- D. Permanent
Answer: D
NEW QUESTION # 411
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 in Snowflake are a feature that allows for the pre-computation and storage of query results for faster query performance. This feature is available starting from the Enterprise Edition of Snowflake. It is not available in the Standard Edition, and while it is also available in higher editions like Business Critical and Virtual Private Snowflake, the Enterprise Edition is the minimum requirement.
References:
* Snowflake Documentation on CREATE MATERIALIZED VIEW1.
* Snowflake Documentation on Working with Materialized Views
https://docs.snowflake.com/en/sql-reference/sql/create-materialized-view.html#:~:text=Materialized%20views%
NEW QUESTION # 412
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