SnowPro-Core Exam (COF-C03) - Snowflake

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Sample COF-C03 Exam Questions & Explanations

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Question #1 Verified Q&A
The fail-safe retention period is how many days?
A 1 day
B 7 days
C 45 days
D 90 days
Correct Answer: 7 days
Explanation:
Fail-safe is a feature in Snowflake that provides an additional layer of data protection. After the Time Travel retention period ends, Fail-safe offers a non-configurable 7-day period during which historical data may be recoverable by Snowflake. This period is designed to protect against accidental data loss and is not intended for customer access.<br />
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References: Understanding and viewing Fail-safe | Snowflake Documentation
Question #3 Verified Q&A
How would you determine the size of the virtual warehouse used for a task?
A Querying (select) the size of the stream content would help determine the warehouse size. For example, if querying large stream content, use a larger warehouse size
B If using the stored procedure to execute multiple SQL statements, it's best to test run the stored<br /> procedure separately to size the compute resource first
C Root task may be executed concurrently (i.e. multiple instances), it is recommended to leave some margins in the execution window to avoid missing instances of execution
D Since task infrastructure is based on running the task body on schedule, it's recommended to configure the virtual warehouse for automatic concurrency handling using Multi-cluster warehouse (MCW) to match the task schedule
Correct Answer: Since task infrastructure is based on running the task body on schedule, it's recommended to configure the virtual warehouse for automatic concurrency handling using Multi-cluster warehouse (MCW) to match the task schedule
Explanation:
The size of the virtual warehouse for a task can be configured to handle concurrency automatically using a Multi-cluster warehouse (MCW). This is because tasks are designed to run their body on a schedule, and MCW allows for scaling compute resources to match the task’s execution needs without manual intervention. References: [COF-C02] SnowPro Core Certification Exam Study Guide
Question #4 Verified Q&A
The Information Schema and Account Usage Share provide storage information for which of the following objects? (Choose three.)
A Users
B Databases
C Tables
D Internal Stages
Correct Answer: Databases, Tables, Internal Stages
Explanation:
The Information Schema and Account Usage Share in Snowflake provide metadata and historical usage data for various objects within a Snowflake account. Specifically, they offer storage information<br />
for Tables, Databases, and Internal Stages. These schemas contain views and table functions that<br />
allow users to query object metadata and usage metrics, such as the amount of data stored and historical activity. Tables: The storage information includes data on the daily average amount of data in database tables. Databases: For databases, the storage usage is calculated based on all the data contained within the database, including tables and stages. Internal Stages: Internal stages are locations within Snowflake for temporarily storing data, and their storage usage is also tracked.<br />
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References: The information is verified according to the SnowPro Core Certification Study Guide and Snowflake documentation
Question #5 Verified Q&A
What is the default File Format used in the COPY command if one is not specified?
A Parquet
B JSON
C CSV
D XML
Correct Answer: CSV
Explanation:
The default file format for the COPY command in Snowflake, when not specified, is CSV (Comma- Separated Values). This format is widely used for data exchange because it is simple, easy to read, and supported by many data analysis tools.
Question #10 Verified Q&A
What are two ways to create and manage Data Shares in Snowflake? (Choose two.)
A Via SQL commands
B Via the data_share=true parameter
C Via the Snowflake Web Interface (Ul)
D Via Virtual Warehouses
Correct Answer: Via SQL commands, Via the Snowflake Web Interface (Ul)
Explanation:
In Snowflake, Data Shares can be created and managed in two primary ways: Via the Snowflake Web Interface (UI): Users can create and manage shares through the graphical interface provided by Snowflake, which allows for a user-friendly experience. Via SQL commands: Snowflake also allows the creation and management of shares using SQL commands. This method is more suited for users who prefer scripting or need to automate the process.<br />
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Reference: https://docs.snowflake.com/en/user-guide/data-sharing-provider.html

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