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Snowflake NAS-C01 Exam Syllabus Topics:

Snowflake SnowPro Specialty - Native Apps Sample Questions:

Question 1

You are developing a Snowflake Native Application. You need to grant specific privileges on a warehouse named 'APP WH' to the application role 'app_public' to allow application users to execute queries within that warehouse. Which of the following SQL statements is the MOST secure and appropriate way to achieve this, adhering to the principle of least privilege?

A.

B.

C.

D.

E.

Question 2

You're developing a Snowflake Native Application with a front-end UI built using Streamlit, deployed as a UDF. This UI allows users to upload CSV files for processing. To adhere to security best practices and prevent unacceptable code practices in a Native App, what considerations should you prioritize in your development and deployment process specifically related to handling user-uploaded files ?

A. Assume that all uploaded files are safe and trustworthy, and directly process them without any security checks.
B. Allow user to execute scripts or upload executable file as part of CSV content
C. Implement strict file size limits and file type validation on both the client-side (Streamlit UI) and server-side (Snowflake UDF) to prevent denial-of-service attacks and malicious file uploads. Sanitize and validate the contents of the uploaded CSV file, escaping special characters and preventing SQL injection vulnerabilities if data from the CSV is used in SQL queries.
D. Store the uploaded CSV files directly within a Snowflake table without any validation to ensure high performance and minimal overhead.
E. Disable any logging or auditing of file upload activity to protect user privacy and avoid unnecessary data storage.

Question 3

You are developing a Snowflake Native Application that utilizes Snowpark Container Services (SPCS) for its backend processing. The application requires secure access to a specific endpoint hosted within the SPCS environment. You've defined a service in your SPCS compute pool. Which of the following SQL commands is the MOST secure and appropriate way to expose an endpoint for access from within the application's consumer environment, assuming the endpoint requires OAuth authentication?

A. CREATE SERVICE ENDPOINT my_endpoint FOR SERVICE my_service WITH AUTHENTICATION TYPE = OAUTH;
B. CREATE SERVICE ENDPOINT my_endpoint FOR SERVICE my_service WITH AUTHENTICATION TYPE = NONE;
C. CREATE SERVICE ENDPOINT my_endpoint FOR SERVICE my_service WITH AUTHENTICATION TYPE = SNOWFLAKE_JWT;
D. BIND SERVICE ENDPOINT my_endpoint FOR SERVICE my_service WITH AUTHENTICATION TYPE = OAUTH TO APPLICATION PACKAGE;
E. ALTER SERVICE my_service ADD ENDPOINT my_endpoint WITH AUTHENTICATION TYPE = OAUTH;

Question 4

You've identified a critical security vulnerability in your Snowflake Native Application that requires immediate remediation. You need to release a patch, but you want to minimize the impact on consumers who are already using your application. Which of the following approaches is MOST suitable for deploying this patch? Select TWO that apply.

A. Issue an official announcement to all consumers that they need to uninstall and reinstall the application to receive the security fix.
B. Develop a SQL script containing the necessary fixes and provide it to consumers with instructions on how to apply it manually to their installed application instances.
C. Leverage zero-downtime patching (if supported by Snowflake in future) by updating internal objects without requiring consumers to update or redeploy their installed application instances.
D. Create a new version of the application package with the patch applied, and immediately update the default version of the application package to the new version.
E. Create a new version of the application package containing the patch. Ensure the new version addresses the vulnerability while maintaining backward compatibility with existing application interfaces and data formats, and then gradually roll out the new version to consumers using APPLICATION roles and grants.

Question 5

You are developing a Snowflake Native Application that provides a data enrichment service. This service requires the consumer to grant the application access to a specific table in their account. You want to ensure that upgrades to your application do not inadvertently break existing consumer configurations. You decide to use a versioned schem a. Which of the following steps are essential during the setup script execution to achieve this and maintain backward compatibility during future upgrades?

A. Define a custom role within the application package and grant it the necessary privileges to read the consumer's table via a secure view. Then, grant the application role the USAGE privilege on this custom role. This ensures that the application role can assume the custom role's privileges for data access.
B. Create a versioned schema using 'CREATE SCHEMA VERSION = ' . Grant the application role 'USAGE on this versioned schema, and ensure all application logic references objects within this schema.
C. Grant the application role 'OWNERSHIP on the consumer's table directly. This allows the application full control and ensures consistent data access regardless of future schema changes within the application.
D. Create a secure view in the versioned schema that accesses the consumer's table. Grant the application role 'SELECT on this secure view. This provides a stable interface that isolates the application from direct changes to the consumer's table.
E. Create a new unversioned schema named 'APPLICATION' and install all application objects within it. This provides a consistent namespace for all consumers, regardless of the application version.

Solutions: