Snowflake SnowPro Core Practice Test - Questions Answers, Page 38
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Question 371

What Snowflake feature provides a data hub for secure data collaboration, with a selected group of invited members?
Explanation:
Snowflake's Data Exchange feature provides a data hub for secure data collaboration.It allows providers to publish data that can be discovered and accessed by a selected group of invited members, facilitating secure and controlled data sharing within a collaborative environment3.Reference:[COF-C02] SnowPro Core Certification Exam Study Guide
Question 372

What is a characteristic of materialized views in Snowflake?
Explanation:
One of the characteristics of materialized views in Snowflake is that they allow multiple tables to be joined in the underlying query.This enables the pre-computation of complex queries involving joins, which can significantly improve the performance of subsequent queries that access the materialized view4.Reference:[COF-C02] SnowPro Core Certification Exam Study Guide
Question 373

Which command is used to start configuring Snowflake for Single Sign-On (SSO)?
Explanation:
To start configuring Snowflake for Single Sign-On (SSO), theCREATE SECURITY INTEGRATIONcommand is used.This command sets up a security integration object in Snowflake, which is necessary for enabling SSO with external identity providers using SAML 2.01.
Question 374

What happens to the objects in a reader account when the DROP MANAGED ACCOUNT command is executed?
Explanation:
When theDROP MANAGED ACCOUNTcommand is executed in Snowflake, it removes the managed account, including all objects created within the account, and access to the account is immediately restricted2.
Question 375

Which operation can be performed on Snowflake external tables?
Explanation:
Snowflake external tables are read-only, which means data manipulation language (DML) operations like INSERT, RENAME, or ALTER cannot be performed on them.However, external tables can be used for query and join operations3.
Question 376

How should clustering be used to optimize the performance of queries that run on a very large table?
Explanation:
For optimizing the performance of queries that run on a very large table, it is recommended to choose one high cardinality column as the clustering key.This helps to co-locate similar rows in the same micro-partitions, improving scan efficiency in queries by skipping data that does not match filtering predicates4.
Question 377

What step can reduce data spilling in Snowflake?
Explanation:
To reduce data spilling in Snowflake, using a larger virtual warehouse is effective because it provides more memory and local disk space, which can accommodate larger data operations and minimize the need to spill data to disk or remote storage1.
Reference: [COF-C02] SnowPro Core Certification Exam Study Guide
Question 378

Which VALIDATION_MODE value will return the errors across the files specified in a COPY command, including files that were partially loaded during an earlier load?
Explanation:
TheRETURN_ERRORSvalue in theVALIDATION_MODEoption of the COPY command instructs Snowflake to validate the data files and return errors encountered across all specified files, including those that were partially loaded during an earlier load2.
Reference: [COF-C02] SnowPro Core Certification Exam Study Guide
Question 379

Which solution improves the performance of point lookup queries that return a small number of rows from large tables using highly selective filters?
Explanation:
The search optimization service improves the performance of point lookup queries on large tables by using selective filters to quickly return a small number of rows.It creates an optimized data structure that helps in pruning the micro-partitions that do not contain the queried values3.
Reference: [COF-C02] SnowPro Core Certification Exam Study Guide
Question 380

Which Snowflake object does not consume any storage costs?
Explanation:
Temporary tables do not consume any storage costs in Snowflake because they only exist for the duration of the session that created them and are automatically dropped when the session ends, thus incurring no long-term storage charges4.
Reference: [COF-C02] SnowPro Core Certification Exam Study Guide
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