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Snowflake Certification
SnowPro-Core Exam
Snowflake.SnowPro-Core.v2024-10-07.q429 Dumps

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Question 236

If a virtual warehouse is suspended, what happens to the warehouse cache?

A.The cache is dropped when the warehouse is suspended and is no longer available upon restart.
B.The warehouse cache persists for as long the warehouse exists, regardless of its suspension status.
C.The cache is maintained for up to two hours and can be restored If the warehouse Is restarted within this limit.
D.The cache is maintained for the auto suspend duration and can be restored it the warehouse 15 restarted within this limit.

Correct Answer: A

When a virtual warehouse in Snowflake is suspended, the cache is dropped and is no longer available upon restart. This means that all cached data, including results and temporary data, are cleared from memory. The purpose of this behavior is to conserve resources while the warehouse is not active. Upon restarting the warehouse, it will need to reload any data required for queries from storage, which may result in a slower initial performance until the cache is repopulated. This is a critical consideration for managing performance and cost in Snowflake.

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Question 237

Which command can be used to list all network policies available in an account?

A.DESCRIBE SESSION POLICY
B.DESCRIBE NETWORK POLICY
C.SHOW SESSION POLICIES
D.SHOW NETWORK POLICIES

Correct Answer: D

To list all network policies available in an account, the correct command is SHOW NETWORK POLICIES.
Network policies in Snowflake are used to define and enforce rules for how users can connect to Snowflake, including IP whitelisting and other connection requirements. The SHOW NETWORK POLICIES command provides a list of all network policies defined within the account, along with their details.
The DESCRIBE SESSION POLICY and DESCRIBE NETWORK POLICY commands do not exist in Snowflake SQL syntax. The SHOW SESSION POLICIES command is also incorrect, as it does not pertain to the correct naming convention used by Snowflake for network policy management.
Using SHOW NETWORK POLICIES without any additional parameters will display all network policies in the account, which is useful for administrators to review and manage the security configurations pertaining to network access.
Reference: Snowflake Documentation on Network Policies
(https://docs.snowflake.com/en/sql-reference/sql/show-network-policies.html)

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Question 238

Which of the following describes how clustering keys work in Snowflake?

A.Clustering keys update the micro-partitions in place with a full sort, and impact the DML operations.
B.Clustering keys sort the designated columns over time, without blocking DML operations
C.Clustering keys create a distributed, parallel data structure of pointers to a table's rows and columns
D.Clustering keys establish a hashed key on each node of a virtual warehouse to optimize joins at run-time

Correct Answer: B

Clustering keys in Snowflake work by sorting the designated columns over time. This process is done in the background and does not block data manipulation language (DML) operations, allowing for normal database operations to continue without interruption. The purpose of clustering keys is to organize the data within micro-partitions to optimize query performance1.
References:
* [COF-C02] SnowPro Core Certification Exam Study Guide
* Snowflake Documentation on Clustering1

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Question 239

What is the MAXIMUM size limit for a record of a VARIANT data type?

A.8MB
B.16MB
C.32MB
D.128MB

Correct Answer: B

The maximum size limit for a record of a VARIANT data type in Snowflake is 16MB. This allows for storing semi-structured data types like JSON, Avro, ORC, Parquet, or XML within a single VARIANT column. References: Based on general database knowledge as of 2021.

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Question 240

What happens when a cloned table is replicated to a secondary database? (Select TWO)

A.A read-only copy of the cloned tables is stored.
B.The replication will not be successful.
C.The physical data is replicated
D.Additional costs for storage are charged to a secondary account
E.Metadata pointers to cloned tables are replicated

Correct Answer: C,E

When a cloned table is replicated to a secondary database in Snowflake, the following occurs:
* C. The physical data is replicated: The actual data of the cloned table is physically replicated to the secondary database. This ensures that the secondary database has its own copy of the data, which can be used for read-only purposes or failover scenarios1.
* E. Metadata pointers to cloned tables are replicated: Along with the physical data, the metadata pointers that refer to the cloned tables are also replicated. This metadata includes information about the structure of the table and any associated properties2.
It's important to note that while the physical data and metadata are replicated, the secondary database is typically read-only and cannot be used for write operations. Additionally, while there may be additional storage costs associated with the secondary account, this is not a direct result of the replication process but rather a consequence of storing additional data.
References:
* SnowPro Core Exam Prep - Answers to Snowflake's LEVEL UP: Backup and Recovery
* Snowflake SnowPro Core Certification Exam Questions Set 10

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