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Snowflake NAS-C01 Exam Syllabus Topics:

Snowflake SnowPro Specialty - Native Apps Sample Questions:

1. You are developing a Snowflake Native Application that uses a custom Python handler to perform data transformations. This handler requires access to a third-party Python package not included in the standard Anaconda environment provided by Snowflake. To ensure the application functions correctly on consumer accounts, what steps must you take? (Select all that apply)

A) Include the required Python package in the application package as a zip file using the 'CREATE or REPLACE FUNCTION' command with the 'imports' clause.
B) Specify the Python package as a dependency in the application's setup script using a install command.
C) Create a stage and upload the python package(s). Then in the Python UDF code, reference the python package from the stage.
D) Use the SALTER FUNCTION' command after installation on the consumer's account to add the required Python package to the function definition. This option is not possible.
E) Instruct consumers to manually install the necessary Python package using 'pip install' in a Snowflake Snowpark Python worksheet after installing the application.

2. You are developing a Snowflake Native Application that processes customer dat a. To comply with data residency requirements, you need to ensure the application processes data within the customer's Snowflake account. The application logic resides in a Snowpark Python stored procedure. During development, you test this procedure using the 'CALL' command. However, after installing the application in a customer's account, the procedure fails with a 'privilege insufficient' error. What are the MOST likely reasons for this and how can you rectify them within the package definition?

A) The application role lacks sufficient privileges on the data sources within the customer's account. Grant the appropriate privileges (e.g., 'SELECT , 'INSERT) on the required tables/views to the application role in the setup script using 'GRANT SELECT ON TABLE TO APPLICATION ROLE
B) The application manifest is missing the 'external_network_accesS property set to 'true'. Add this to the manifest and use network rules if the application requires access to external resources.
C) The stored procedure is missing the EXECUTE MANAGED ACCOUNT privilege. Add 'GRANT EXECUTE MANAGED ACCOUNT ON PROCEDURE TO APPLICATION ROLE to the setup script.
D) The procedure owner is not the application. This can be resolved by transferring ownership to the application role using 'ALTER PROCEDURE (...) OWNER TO APPLICATION ROLE in the setup script.
E) The stored procedure requires the 'IMPORTED PRIVILEGES on the database. Grant this using 'GRANT IMPORTED PRIVILEGES ON DATABASE TO APPLICATION ROLE in the setup script.

3. You are developing a Streamlit application within a Snowflake Native Application that needs to access a secured view named 'sensitive_data' in the application's container. This view exposes aggregated and anonymized dat a. What minimum set of privileges must be granted to the 'app_public' application role to allow users to query this view from the Streamlit application?

A) GRANT USAGE ON DATABASE .application TO APPLICATION ROLE app_public; GRANT SELECT ON VIEW .application.sensitive_data TO APPLICATION ROLE app_public;
B) GRANT USAGE ON SCHEMA application TO APPLICATION ROLE app_public; GRANT ALL PRIVILEGES ON VIEW application.sensitive_data TO APPLICATION ROLE app_public;
C) GRANT SELECT ON VIEW .application.sensitive_data TO APPLICATION ROLE app_public;
D) GRANT USAGE ON DATABASE TO APPLICATION ROLE app_public; GRANT SELECT ON VIEW .application.sensitive_data TO APPLICATION ROLE app_public;
E) GRANT USAGE ON SCHEMA application TO APPLICATION ROLE app_public; GRANT SELECT ON VIEW .application.sensitive_data TO APPLICATION ROLE app_public;

4. You are developing a Snowflake Native Application that provides data enrichment services. You want to offer tiered pricing based on the number of API calls made by consumers. Which of the following is the most effective approach to implement usage-based billing and track API call consumption within your application?

A) Implement a UDF within the application that increments a counter in a shared table each time an API endpoint is called. Query this table to determine usage.
B) Implement a custom logging mechanism within the application to track API calls and store the logs in a separate Snowflake database, accessible only to the provider. Use scheduled tasks to analyze these logs and generate billing data.
C) Leverage Snowflake's built-in metering framework using and 'SYSTEM$METER STAGE_STORAGE BYTES' to indirectly estimate API calls.
D) Use Snowflake's resource monitors to limit the compute resources available to consumers based on their chosen tier.
E) Utilize Snowflake's events table to capture API call events based on function executions, enabling precise tracking and reporting of API usage for each consumer.

5. You are preparing to list your Snowflake Native Application on the Snowflake Marketplace. You've developed the application and implemented security measures. Which of the following steps are essential best practices for ensuring a successful and secure listing on the Snowflake Marketplace?

A) Thoroughly document the application's functionality, installation instructions, configuration options, and any known limitations. Provide clear and concise pricing information and support contact details.
B) Implement robust error handling and logging mechanisms to provide consumers with informative error messages and aid in troubleshooting. Include mechanisms for securely collecting and storing application usage metrics (if required), ensuring compliance with privacy regulations.
C) Clearly communicate the application's security model, including data encryption methods, access controls, and any reliance on consumer-side security configurations. Undergo and document regular security audits and penetration tests of the application.
D) Avoid documenting any limitations or potential issues with the application to present a flawless image to potential consumers. Only provide limited pricing information to create a sense of urgency to potential consumer
E) Include a prominently displayed disclaimer stating that the application is provided "as is" and the provider assumes no liability for any damages arising from its use. Only provide basic installation instructions. It is the end user's responsibility to know how to use the application.

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