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Snowflake NAS-C01 Exam Syllabus Topics:

Snowflake SnowPro Specialty - Native Apps Sample Questions:

1. You are designing a Snowflake Native Application that needs to store temporary data for processing, which should be cleaned up when the application is uninstalled from the consumer account. Which of the following options would be the MOST appropriate and secure way to manage this temporary data?

A) Create a table with a retention period in the application database using the APPLICATION role. Configure the retention period to be very short (e.g., 1 day).
B) Create a temporary stage and use it to persist data. Use a SQL statement in your uninstall script to remove the data from the stage when the application is uninstalled.
C) Create an external stage linked to cloud storage. Store temporary data in cloud storage and implement cleanup logic using an uninstall script.
D) Create a temporary table in the application database using the APPLICATION role. The application is responsible for dropping the table when uninstalled.
E) Create a schema named 'temp' in the application database using the APPLICATION role. The application setup script will create temporary tables inside this schema. Use an uninstall script to drop the entire schema upon uninstall.

2. You are preparing to deploy a Snowflake Native Application to the Snowflake Marketplace. You have implemented versioning using the 'VERSION' clause in your setup script. Your application relies on a specific shared data source that is only available in the AWS us- west-2 region. To ensure that consumers in other regions can still install and use your application, you decide to offer different versions with region-specific logic. Which of the following approaches is the MOST effective and recommended to manage region-specific configurations and data sharing across multiple versions of your Snowflake Native Application?

A) Implement a build process that generates region-specific setup scripts based on environment variables using a CI/CD pipeline. Each version of the application will then contain the right setup script based on the target region.
B) Use the 'PATCH' clause during application deployment to selectively modify the configuration based on the target region. Deploy the same application package to all regions.
C) Use separate schemas within the application package for each region, and configure application roles with permissions to only access schemas relevant to their region. No changes to code logic are required.
D) Implement conditional logic within the application's stored procedures to check the current region and adjust data sharing and execution accordingly using Package all configurations within a single version.
E) Create separate application packages for each region, containing region-specific configurations and data sharing setups. This ensures consumers only install the version relevant to their region.

3. A Snowflake Native App developer is building an application package that contains multiple versions. They want to ensure that a consumer upgrading from version 1.0 to version 2.0 MUST execute a specific set of SQL scripts as part of the upgrade process to migrate existing application dat a. Which Snowflake Native App feature should they leverage to achieve this?

A) Snowflake Streams and Tasks to monitor the application version and trigger the migration scripts automatically.
B) A version change handler defined within the application package.
C) A post-install script defined in the setup script.
D) Snowflake Pipes to load and transform the existing data.
E) Application Role-Based Access Control (RBAC)

4. A Snowflake Native Application is designed to process customer data using a series of stored procedures. One of the stored procedures, process data', requires access to a stage named 'customer stage' in the consumer's account to load dat a. The application role 'app_role' is intended to manage all access within the application. However, the procedure fails with a permission error during testing in the consumer environment. Which of the following combination of steps is required to fix the problem?

A) Grant 'USAGE privilege on the database and schema containing 'customer_stage' to the 'app_role', and create a new role in the consumer account, grant 'READ on the 'customer_stage' to this new role, then grant this new role to 'app_role' .
B) The stored procedure needs to be defined with 'EXECUTE AS CALLER rights to assume the privileges of the role executing the procedure.
C) Grant 'USAGE privilege on the database and schema containing 'customer_stage' to the 'app_role', and grant 'READ privilege on 'customer_stage' to the app_role' .
D) Grant 'READ and ' WRITE privilege on 'customer_stage' directly to the provider account.
E) Grant 'USAGE privilege on the database and schema containing 'customer_stage' to the provider account, and grant privilege on 'customer_stage' to the 'app_role' .

5. You are developing a Snowflake Native Application using Python that processes financial transactions. The application relies on external stages for loading transaction dat a. After deploying the application to a consumer account, you observe that the application fails to load data from the stage, resulting in an 'Invalid stage name' error in the consumer's logs. Assume the stage was created and shared correctly. Which of the following steps would BEST help you diagnose the problem and ensure the application works as expected?

A) Redeploy the application with the 'REPLACE' flag to automatically update the stage definition on the consumer side, and confirm that the application has sufficient privileges to access the storage integration associated with the stage. In Python, trap any 'Invalid stage name' exceptions and retry after a short delay.
B) Verify that the application manifest includes the correct stage definition with the 'privileges' parameter set to 'USAGE on the stage object. Also, within your Python code, use the 'snowflake.connector' to explicitly grant USAGE privilege from the application role to the stage.
C) Ensure the stage definition in the 'manifest.yml' file uses the fully qualified name of the stage (database.schema.stage_name), and verify that the consumer has imported the stage's database and schema into their environment. In Python, use the 'DESC STAGE command via a Snowflake connector to confirm existence and permissions.
D) Check the application's deployed version details in the consumer account's Snowflake UI to confirm the 'stage_name' parameter within the application manifest is defined correctly, and then within the Python code, make sure to utilize a fully qualified name when referring to the stage. Use Snowflake logging to write stage information to the event table.
E) Review the stage properties in both the provider and consumer accounts to ensure the storage integration is correctly configured and accessible from both sides. In the Python code, use the USE ROLE command to explicitly switch to the application's role before accessing the stage.

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