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Snowflake NAS-C01 Exam Syllabus Topics:

Snowflake SnowPro Specialty - Native Apps Sample Questions:

1. A Snowflake Native App includes a managed task 'app_db.app_schema.daily_data_processing'. You, as the application provider, need to ensure that consumer accounts can only execute this managed task and have no other privileges. You also need to implement robust error handling to log any failed execution attempts within the consumer account. Which of the following SQL statements, when executed within the application's installation script, provides the most secure and complete solution to achieve these requirements, including error logging within the consumer account (assuming an existing table exists)?

A) GRANT EXECUTE MANAGED TASK ON MANAGED TASK TO APPLICATION ROLE app_public;
B)

C)

D)

E) GRANT EXECUTE MANAGED TASK ON MANAGED TASK TO APPLICATION ROLE app_public WITH GRANT OPTION;

2. You are the provider of a Snowflake Native Application. After releasing version '1.0' of your application, a security vulnerability is discovered. You quickly develop a fix in version '1.1 What steps should you take to ensure that all consumer accounts are promptly and securely upgraded to the fixed version, minimizing disruption to their operations and ensuring their data security?

A) Announce the security vulnerability and the availability of version '1.1 through the Snowflake Marketplace. Rely on consumer accounts to self-upgrade based on their awareness and urgency.
B) Grant 'USAGE' privilege to all consumer accounts on version '1.1 Monitor consumer adoption of the newer version, and after a reasonable period, revoke 'USAGE on version '1.0'. Communicating the importance of upgrading.
C) Use the 'ALTER APPLICATION PACKAGE ... SET DEFAULT VERSION = '1.1" command. This will automatically upgrade all existing installations to the new version during their next scheduled refresh.
D) Contact Snowflake Support to request a forced upgrade of all consumer accounts to version ' 1.1 due to the security vulnerability.
E) Immediately revoke 'USAGE privileges on version '1 .C for all consumer accounts, forcing them to contact you for an upgrade to '1.1'. Provide upgrade instructions in the application's documentation.

3. A company is developing a Snowflake Native Application that will be distributed through the Snowflake Marketplace. The application uses internal stages to store intermediate data processing results. Which of the following methods is the MOST secure and recommended way to manage the application's internal stages?

A) Create an external stage in AWS S3 or Azure Blob Storage and grant access to the application database role.
B) Create an internal stage owned by the application database role and grant usage to all roles within the application.
C) Create an internal stage owned by the ACCOUNTADMIN role and grant usage to the application database role.
D) Create an internal stage owned by a custom role created specifically for stage management within the application, granting only necessary permissions.
E) Create an internal stage owned by the application database role. The application framework automatically grants necessary permissions.

4. You are developing a Snowflake Native Application that utilizes Snowpark Container Services (SPCS) to run a machine learning model within the customer's Snowflake environment. The application requires access to data stored in a secure stage within the customer's account. Considering security best practices and the limitations of SPCS in Native Apps, what is the most secure and recommended approach to grant the container access to the customer's data stage?

A) Creating a Snowflake Stored Procedure with 'EXECUTE AS CALLER rights and granting the application's service account execute access to the stored procedure. The stored procedure reads data from the secure stage and returns it to the container via a secure data sharing mechanism.
B) Creating a Snowflake UDF that reads data from the secure stage and exposes it through a secure view, which the container accesses using the application's service account.
C) Packaging the data within the application package during the build process. This eliminates the need for runtime access to the customer's data stage.
D) Utilizing a Snowflake external function that proxies the data access request to an external API gateway managed by the provider, which then fetches the data from the secure stage. This keeps the access credentials out of the customer's environment completely.
E) Granting the application's service account the 'READ privilege directly on the secure stage. This ensures the container can directly access the data.

5. As a Native App Provider, you've identified a performance bottleneck in a query against a table within your application's container due to an inefficient join. The query is part of a view exposed to consumers. Which of the following actions would be MOST effective in improving the query performance while minimizing disruption to consumers?

A) Implement a scheduled task to regularly update the statistics of the table involved in the join. This will help the query optimizer make better decisions, and consumers will see improved performance gradually.
B) Create a materialized view in place of the existing view, pre-computing the join results. This will require consumers to update their queries to use the new materialized view name.
C) Rewrite the query in the view definition to use a more efficient join algorithm (e.g., using hints). Consumers will automatically benefit from the improved performance.
D) Add a 'CLUSTER BY clause to the underlying table based on the join keys. Consumers will automatically benefit from improved query performance without any changes on their end.
E) Create a search optimization policy on columns used in the 'WHERE' clause in the view. This does not require any changes from the consumers.

Solutions: