Snowflake COF-C02 Practice Test - Questions Answers, Page 49
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Question 481

Which data type can be used to store geospatial data in Snowflake?
Explanation:
Snowflake supports two geospatial data types:GEOGRAPHYandGEOMETRY. TheGEOGRAPHYdata type is used to store geospatial data that models the Earth as a perfect sphere, which is suitable for global geospatial data. This data type follows the WGS 84 standard and is used for storing points, lines, and polygons on the Earth's surface. TheGEOMETRYdata type, on the other hand, represents features in a planar (Euclidean, Cartesian) coordinate system and is typically used for local spatial reference systems.Since the question specifically asks about geospatial data, which commonly refers to Earth-related spatial data, the correct answer isGEOGRAPHY3.References:[COF-C02] SnowPro Core Certification Exam Study Guide
Question 482

What can be used to view warehouse usage over time? (Select Two).
Explanation:
To view warehouse usage over time, the Query history view and the WAREHOUSE_METERING__HISTORY View can be utilized.The Query history view allows users to monitor the performance of their queries and the load on their warehouses over a specified period1.The WAREHOUSE_METERING__HISTORY View provides detailed information about the workload on a warehouse within a specified date range, including average running and queued loads2.References:[COF-C02] SnowPro Core Certification Exam Study Guide
Question 483

Which Snowflake feature is used for both querying and restoring data?
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.References:[COF-C02] SnowPro Core Certification Exam Study Guide
Question 484

A company strongly encourages all Snowflake users to self-enroll in Snowflake's default Multi-Factor Authentication (MFA) service to provide increased login security for users connecting to Snowflake.
Which application will the Snowflake users need to install on their devices in order to connect with MFA?
Explanation:
Snowflake's default Multi-Factor Authentication (MFA) service is powered by Duo Security. Users are required to install the Duo Mobile application on their devices to use MFA for increased login security when connecting to Snowflake.This service is managed entirely by Snowflake, and users do not need to sign up separately with Duo1.
Question 485

Which Snowflake objects track DML changes made to tables, like inserts, updates, and deletes?
Explanation:
In Snowflake, Streams are the objects that track Data Manipulation Language (DML) changes made to tables, such as inserts, updates, and deletes. Streams record these changes along with metadata about each change, enabling actions to be taken using the changed data.This process is known as change data capture (CDC)2.
Question 486

What is the Fail-safe period for a transient table in the Snowflake Enterprise edition and higher?
Explanation:
The Fail-safe period for a transient table in Snowflake, regardless of the edition (including Enterprise edition and higher), is 0 days. Fail-safe is a data protection feature that provides additional retention beyond the Time Travel period for recovering data in case of accidental deletion or corruption. However, transient tables are designed for temporary or short-term use and do not benefit from the Fail-safe feature, meaning that once their Time Travel period expires, data cannot be recovered.
References:
Snowflake Documentation: Understanding Fail-safe
Question 487

Which view can be used to determine if a table has frequent row updates or deletes?
Explanation:
The TABLE_STORAGE_METRICS view can be used to determine if a table has frequent row updates or deletes. This view provides detailed metrics on the storage utilization of tables within Snowflake, including metrics that reflect the impact of DML operations such as updates and deletes on table storage. For example, metrics related to the number of active and deleted rows can help identify tables that experience high levels of row modifications, indicating frequent updates or deletions.
References:
Snowflake Documentation: TABLE_STORAGE_METRICS View
Question 488

While clustering a table, columns with which data types can be used as clustering keys? (Select TWO).
Explanation:
A clustering key can be defined when a table is created by appending a CLUSTER Where each clustering key consists of one or more table columns/expressions, which can be of any data type, except GEOGRAPHY, VARIANT, OBJECT, or ARRAY https://docs.snowflake.com/en/user-guide/tables-clustering-keys
Question 489

What does the worksheet and database explorer feature in Snowsight allow users to do?
Explanation:
The worksheet and database explorer feature in Snowsight allows users to tag frequently accessed worksheets for ease of access. This functionality helps users organize and quickly navigate to the worksheets they use most often, enhancing productivity and streamlining the data exploration and analysis process within Snowsight, Snowflake's web-based query and visualization interface.
References:
Snowflake Documentation: Snowsight (UI for Snowflake)
Question 490

What are characteristics of reader accounts in Snowflake? (Select TWO).
Explanation:
Characteristics of reader accounts in Snowflake include:
A . Reader account users cannot add new data to the account: Reader accounts are intended for data consumption only. Users of these accounts can query and analyze the data shared with them but cannot upload or add new data to the account.
E . Reader accounts enable data consumers to access and query data shared by the provider: One of the primary purposes of reader accounts is to allow data consumers to access and perform queries on the data shared by another Snowflake account, facilitating secure and controlled data sharing.
References:
Snowflake Documentation: Reader Accounts
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