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Snowflake Certification
COF-C02 Exam
Snowflake.COF-C02.v2025-08-26.q885 Dumps

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Question 766

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.DML statements that are being issued against the table are blocked
C.The table has a small number of micro-partitions
D.Queries on the table are running slower than expected
E.The clustering depth for the table is large

Correct Answer: D,E

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

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Question 767

Who can create network policies within Snowflake? (Select TWO).

A.A role with the CREATE NETWORK POLICY privilege
B.ORCADMIN only
C.SYSADMIN only
D.SECURITYADMIN or higher roles
E.A role with the CREATE SECURITY INTEGRATION privilege

Correct Answer: A,D

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Question 768

Which task is supported by the use of Access History in Snowflake?

A.Data backups
B.Cost monitoring
C.Compliance auditing
D.Performance optimization

Correct Answer: C

Access History in Snowflake is primarily utilized for compliance auditing. The Access History feature provides detailed logs that track data access and modifications, including queries that read from or write to database objects. This information is crucial for organizations to meet regulatory requirements and to perform audits related to data access and usage.
Role of Access History: Access History logs are designed to help organizations understand who accessed what data and when. This is particularly important for compliance with various regulations that require detailed auditing capabilities.
How Access History Supports Compliance Auditing:
By providing a detailed log of access events, organizations can trace data access patterns, identify unauthorized access, and ensure that data handling complies with relevant data protection laws and regulations.
Access History can be queried to extract specific events, users, time frames, and accessed objects, making it an invaluable tool for compliance officers and auditors.

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Question 769

Secured Data Sharing is allowed for which Snowflake database objects? (Select TWO).

A.Tables
B.User-Defined Table Functions (UDTFs)
C.Secure views
D.Stored procedures
E.Worksheets

Correct Answer: A,C

Snowflake allows secure data sharing for specific database objects to ensure data is shared securely and efficiently. The primary objects that can be shared securely are tables and secure views.
* Tables:Share actual data stored in tables.
* Secure Views:Share derived data while protecting the underlying table structures and any sensitive information.
References:
* Snowflake Documentation: Introduction to Secure Data Sharing
* Snowflake Documentation: Creating Secure Views

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Question 770

What is one of the characteristics of data shares?

A.Data shares support full DML operations.
B.Data shares work by copying data to consumer accounts.
C.Data shares utilize secure views for sharing view objects.
D.Data shares are cloud agnostic and can cross regions by default.

Correct Answer: C

Data sharing in Snowflake allows for live, read-only access to data across different Snowflake accounts without the need to copy or transfer the data. One of the characteristics of data shares is the ability to use secure views. Secure views are used within data shares to restrict the access of shared data, ensuring that consumers can only see the data that the provider intends to share, thereby preserving privacy and security.
References:
* Snowflake Documentation: Understanding Secure Views in Data Sharing

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