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

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Question 41

Which semi-structured file format is a compressed, efficient, columnar data representation?

A.Avro
B.JSON
C.TSV
D.Parquet

Correct Answer: D

Parquet is a columnar storage file format that is optimized for efficiency in both storage and processing. It supports compression and encoding schemes that significantly reduce the storage space needed and speed up data retrieval operations, making it ideal for handling large volumes of data. Unlike JSON or TSV, which are row-oriented and typically uncompressed, Parquet is designed specifically for use with big data frameworks, offering advantages in terms of performance and cost when storing and querying semi-structured data.References: Apache Parquet Documentation

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Question 42

Which Snowflake database object can be used to track data changes made to table data?

A.Tag
B.Task
C.Stream
D.Stored procedure

Correct Answer: C

A Stream object in Snowflake is used for change data capture (CDC), which records data manipulation language (DML) changes made to tables, including inserts, updates, and deletes3.

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Question 43

What action can a user take to address query concurrency issues?

A.Enable the query acceleration service.
B.Enable the search optimization service.
C.Resize the virtual warehouse to a larger instance size.
D.Add additional clusters to the virtual warehouse

Correct Answer: D

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Question 44

True or False: It is possible for a user to run a query against the query result cache without requiring an active Warehouse.

A.True
B.False

Correct Answer: A

Explanation
Query result cache is all about fetching the data from cloud services layer and saving the cost by not running the virtual warehouse.

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Question 45

Where would a Snowflake user find information about query activity from 90 days ago?

A.account__usage . query history view
B.account__usage.query__history__archive View
C.information__schema . cruery_history view
D.information__schema - query history_by_ses s i on view

Correct Answer: B

To find information about query activity from 90 days ago, a Snowflake user should use the account_usage.query_history_archive view. This view is designed to provide access to historical query data beyond the default 14-day retention period found in the standard query_history view. It allows users to analyze and audit past query activities for up to 365 days after the date of execution, which includes the
90-day period mentioned.
References:
* [COF-C02] SnowPro Core Certification Exam Study Guide
* Snowflake Documentation on Account Usage Schema1

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