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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 requires maintaining multiple live versions for different customer segments. Some customers need to stay on an older version for compatibility reasons, while new customers should use the latest version. How can you best manage these different versions using Snowflake Native App features?

A) By using streams and tasks to replicate data and logic between different versions of the application, ensuring data consistency.
B) By creating separate application packages for each version and managing them independently, allowing consumers to choose which version to install. The 'APPLICATION ROLE is used to define application-level access.
C) By leveraging the 'APPLICATION ROLE to control access to different versions using conditional logic within the application code.
D) By implementing a custom versioning system within the application's stored procedures and functions, relying on consumer-provided parameters to determine which version of the logic to execute.
E) By creating separate Snowflake accounts for each customer segment, each with a different version of the application installed.

2. 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) 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.
B) 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.
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) Create a search optimization policy on columns used in the 'WHERE' clause in the view. This does not require any changes from the consumers.
E) 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.

3. You are responsible for managing the pricing plans for your Snowflake Native Application listed on the Marketplace. You want to offer a 'Premium' tier that includes additional features and resources. To achieve this, you need to modify the listing to include this new pricing option. Which of the following steps are NECESSARY and in the CORRECT order to successfully add the 'Premium' tier to your application's listing, ensuring existing customers are not negatively impacted? (Choose two options in their proper order)

A) 1. Update the Marketplace listing by adding the 'Premium' pricing tier with appropriate settings, but without modifying the application package. 2. Inform existing customers that the new pricing tier is available.
B) 1. Update the listing on the Marketplace with the new pricing tier. 2. Ensure backward compatibility for existing customers by implementing logic in the application to detect their current tier and maintain existing functionality.
C) 1. Create a new version of the application package in your provider account with the code changes supporting the 'Premium' features. 2. Update the Marketplace listing with the new version of the application and add the 'Premium' pricing tier with appropriate settings.
D) 1. Test new Pricing in a Sandbox environment with few consumers. 2. Deploy the new version to the consumer accounts.
E) 1. Modify the existing application package in place to include the code changes supporting the 'Premium' features. 2. Update the Marketplace listing with the modified application and add the 'Premium' pricing tier with appropriate settings.

4. You are setting up an external stage to host your Snowflake Native Application Package on AWS S3. You've created an IAM role and Snowflake integration. However, when you try to create the application package with 'EXTERNAL STAGE , you receive an error indicating that Snowflake cannot access the S3 bucket. Which of the following could be the potential causes and solutions?

A) The external stage URL is incorrect. Solution: Ensure the URL provided in the 'CREATE APPLICATION PACKAGE EXTERNAL STAGE command is the correct S3 bucket URL.
B) The S3 bucket policy does not allow access from the Snowflake AWS account. Solution: Update the bucket policy to explicitly allow access from the Snowflake AWS account, using the IAM role's principal.
C) The Snowflake integration object is not correctly configured with the IAM role ARN. Solution: Verify the parameter in the integration object matches the IAM role ARN.
D) The SNOWFLAKE DEPLOYMENT role is not granted access to the Integration object. Solution: Grant USAGE privilege on the Integration to the SNOWFLAKE DEPLOYMENT role.
E) The IAM role does not have sufficient permissions to access the S3 bucket. Solution: Update the IAM role's policy to grant 's3:GetObject' and 's3:ListBuckeV permissions on the bucket.

5. An application provider wants to grant the 'EXECUTE MANAGED TASK' privilege to a consumer account for a specific managed task within their Snowflake Native App. The provider uses the following SQL statement:

However, when the consumer account attempts to execute the managed task, they encounter an error indicating insufficient privileges. Which of the following reasons could explain why the consumer account is unable to execute the task, and how could the provider resolve the issue? Select two correct answers.

A) The consumer account needs to explicitly grant the 'USAGE' privilege on the application database and schema to the application role 'app_public'. The provider needs to provide SQL to facilitate this in their setup script for consumer.
B) The 'EXECUTE MANAGED TASK' privilege needs to be granted with the 'WITH GRANT OPTION' clause to allow the consumer to further grant the privilege to other roles within their account.
C) The application role 'app_public' might not be activated within the consumer account's session. The consumer needs to ensure the application role is active using 'USE ROLE app_public;' before attempting to execute the managed task.
D) The 'EXECUTE MANAGED TASK' privilege must be granted directly to the consumer account's user role, not the application role. The provider needs to identify the user role used by the consumer and grant the privilege to that specific role.
E) The managed task owner (the application) does not have the OWNERSHIP privilege on the database and schema where the managed task resides. The application must have OWNERSHIP on these objects.

Solutions: