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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 that provides data enrichment services. You want to implement a phased rollout of a new version to your users. You have three distinct user groups: 'EarlyAdopters', 'StandardUsers', and 'CriticalUsers'. You need to use release directives to manage the upgrade process, ensuring that 'EarlyAdopters' receive the new version first, followed by 'StandardUsers' after a week of monitoring, and finally 'CriticalUsers' two weeks after that. Which of the following approaches is the MOST effective way to achieve this using Snowflake Native App release directives?

A. Use release directives within a single application package to control version availability based on the application role. Create separate roles for each user group and grant them appropriate privileges.
B. Create separate application packages for each user group and manage versions independently within each package.
C. Use release directives with tag-based versioning. Tag each user account with a tag indicating their user group (e.g., 'user_group = 'EarlyAdopters"). Then, use the 'STAGE_VERSIONS' clause in the 'ALTER APPLICATION' command to associate versions with these tags, specifying a different activation time for each tag. For example: 'ALTER APPLICATION my_app STAGE_VERSIONS versioni .1 FOR TAG user_group = 'EarlyAdopters' ACTIVATE_AT = '2024-01-01 00:00:00'; ALTER APPLICATION my_app STAGE_VERSIONS versioni .1 FOR TAG user_group = 'StandardUserS ACTIVATE_AT = '2024-01-08 00:00:00';'
D. Use the SALTER APPLICATION' command with the 'STAGE VERSIONS clause to explicitly assign specific versions to each user group based on their tag values. For example: 'ALTER APPLICATION my_app STAGE_VERSIONS versioni .1 FOR TAG user_group = 'EarlyAdopters';'
E. Implement a custom upgrade mechanism within your application logic, querying a configuration table to determine which version each user should receive. This table is updated based on a predefined schedule.

Question 2

You are preparing to list your Snowflake Native Application on the Snowflake Marketplace. Before submitting the application for approval, which of the following checks are essential to perform to ensure a smooth review process and avoid potential rejections by Snowflake?

A. Thoroughly test the application in various Snowflake regions to ensure compatibility and proper functionality across different environments.
B. Document all external dependencies of the application in the listing description, including any required Snowflake features or limitations.
C. Make sure every SQL role and all privileges are explicitly granted and listed in setup.sql.
D. Ensure the application uses only standard Snowflake features available to all accounts, avoiding any preview or unsupported functionalities.
E. Verify that the application package contains a valid 'setup.sqr file with the necessary SQL statements to initialize the application environment in the consumer account.

Question 3

You are developing a Snowflake Native Application that processes sensitive dat a. During the application lifecycle management, including version updates, what steps should you take to ensure the data security and privacy of the consumers' data, especially considering that your development team might need access to a subset of the data for testing?

A. Use Snowflake's data classification features to identify sensitive data and implement row-level security to restrict access to the development team.
B. Utilize Snowflake's external functions to process the data in a secure enclave outside of Snowflake, minimizing the risk of data exposure. Ensure external functions called are encrypted.
C. Create a separate Snowflake account for testing and populate it with synthetic data that mimics the structure and characteristics of the consumer's data.
D. Grant the development team direct access to the consumer's data warehouse to facilitate testing. Ensure proper auditing is enabled.
E. Implement data masking and anonymization techniques to create a sanitized test dataset derived from the consumer's data. Provide the development team with access only to the masked data, via data sharing from the producer to consumer account.

Question 4

You are tasked with deploying a new version of your Snowflake Native Application. The new version introduces significant schema changes to the data warehouse used by the application. What steps should you take during the deployment process to ensure a smooth transition and minimize downtime?

A. Immediately replace the existing application version with the new version. Snowflake will automatically handle any schema compatibility issues.
B. Modify the existing tables in place to reflect the new schema. Update your application's code to be compatible with the new schema after the changes are complete.
C. Use Snowflake's zero-copy cloning feature to create a copy of the existing database. Apply the schema changes to the cloned database, test thoroughly, and then promote the cloned database to production.
D. Deploy the new version as a staging version alongside the existing version. Implement data migration scripts to gradually move data to the new schema, and then switch the production traffic to the new version.
E. Notify all users that the application will be unavailable for several hours while the schema changes are applied directly to the production environment.

Question 5

You have successfully deployed your Snowflake Native Application Package to an external stage (AWS S3), but consumers are reporting they are not receiving updates after you deploy new versions to the external stage. You have verified that the IAM role, Snowflake integration, and S3 bucket policy are correctly configured. What steps should you take to troubleshoot and resolve this issue?

A. Verify that the SNOWFLAKE DEPLOYMENT role has been granted ownership of the Integration object used for accessing the external stage.
B. Ensure the S3 bucket has versioning enabled. Snowflake relies on S3 versioning to detect new application package versions.
C. Consumers must manually refresh their installed application instance using the command 'ALTER APPLICATION REFRESH;' after a new package version is deployed.
D. Execute the 'ALTER APPLICATION PACKAGE REFRESH' command after each deployment to the external stage. This explicitly informs Snowflake to refresh the application package metadata.
E. Grant the APPLICATION ROLE to the SNOWFLAKE DEPLOYMENT role on the application package. This allows the deployment process to automatically update the consumer instances.

Solutions: