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Snowflake NAS-C01 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Snowflake Native Applications Deployment | 25% | - Build, version, and release native applications
|
| Topic 2: Snowflake Native App Framework Overview | 20% | - Understand Snowflake architecture, features, tools, and best practices
|
| Topic 3: Snowflake Native Applications Design and Creation | 35% | - Apply Snowflake best practices while building native application workloads
|
| Topic 4: Snowflake Native Applications Installation and Testing | 20% | - Install and test native applications
|
Snowflake SnowPro Specialty - Native Apps Sample Questions:
A provider is developing a Snowflake Native App and utilizes event sharing to communicate state changes to consumers. After initial installation, a consumer reports not receiving any event notifications. The provider has verified the event table is populated correctly. Which of the following are the MOST likely reasons for this issue and how can the provider troubleshoot them?
- A. The event table function is not correctly filtering events based on the consumer's application instance I Review the function logic to ensure proper filtering using APP_INSTANCE_ID().
- B. Event sharing is inherently unreliable and Snowflake does not guarantee event delivery. The provider should implement alternative polling mechanisms.
- C. The consumer has not refreshed their application instance metadata. Ask the consumer to execute SYSTEM$REFRESH_EXTERNAL_FUNCTIONS() in the application database.
- D. The consumer's event table function does not have the correct security invoker privileges. Grant EXECUTE TASK on the event table function to the consumer role.
- E. The consumer has not explicitly granted the necessary privileges on the event table function to the role used by the app. Instruct the consumer to grant USAGE on the event table function to the app role.
Correct Answer: A,E 🗳️
Explanation: Only visible for VCE4Plus members. You can sign-up / login (it's free).
You're packaging a Snowflake Native Application that performs complex analytical computations on data within the consumer's account. This computation involves several intermediate tables and functions, all created within the application package. You want to optimize the application's performance and reduce storage costs in the consumer's account. Which of the following strategies can be employed to achieve these goals, especially considering that intermediate data is not intended to be directly accessible to the consumer?
- A. Create all intermediate tables as standard permanent tables, relying on Snowflake's automatic data compression and storage optimization features to minimize costs. Grant limited privileges to the consumer to control data access.
- B. Implement data pruning techniques within the application's logic to delete intermediate data as soon as it is no longer needed, even if permanent tables are used for intermediate steps.
- C. Create all intermediate tables as transient tables. Transient tables do not support Time Travel or Fail-safe, which reduces storage costs, and grant appropriate privileges to application roles.
- D. Use external tables to store the intermediate results in cloud storage (e.g., AWS S3), accessed through a secure integration. This minimizes the storage footprint within the consumer's Snowflake account.
- E. Create all intermediate tables as temporary tables. Temporary tables are automatically dropped at the end of the session, minimizing storage costs and ensuring data privacy.
Correct Answer: B,C 🗳️
Explanation: Only visible for VCE4Plus members. You can sign-up / login (it's free).
Your team is building a Snowflake Native App that uses a UDF (User-Defined Function) for data enrichment. The UDF needs to access an external API key. Which of the following approaches are valid and secure methods for providing the API key to the UDF within the Native App framework?
- A. Pass the API key as a parameter to the UDF when it's called.
- B. Use a secure parameter in the MANIFEST.yml and access it within the UDF.
- C. Store the API key directly in the UDF's code.
- D. Store the API key in a database table within the consumer's account and grant the UDF access to that table.
- E. Store the API key using Snowflake's Secret Management feature and grant the UDF access to the secret.
Correct Answer: B,E 🗳️
Explanation: Only visible for VCE4Plus members. You can sign-up / login (it's free).
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. A post-install script defined in the setup script.
- B. Snowflake Pipes to load and transform the existing data.
- C. A version change handler defined within the application package.
- D. Application Role-Based Access Control (RBAC)
- E. Snowflake Streams and Tasks to monitor the application version and trigger the migration scripts automatically.
Correct Answer: C 🗳️
Explanation: Only visible for VCE4Plus members. You can sign-up / login (it's free).
A Snowflake Native Application uses a task 'aggregate_data' to aggregate dat a. This task is owned by the 'app_public' role and executes a stored procedure 'aggregate data proc'. Consumers have reported the task sometimes fails intermittently, citing permission issues, specifically related to accessing a specific table in the consumer account. The application provider has granted 'SELECT' privilege on the table to the 'app_public' role. However, the failures persist. What is the MOST LIKELY cause of the intermittent failures related to executing the task?
- A. The stored procedure is executed with caller's rights (CALLER), but the application role 'app_public' doesn't have the ACTIVATION privilege on the task.
- B. The stored procedure is executed with definer's rights (OWNER), so the privilege check occurs against the application provider's account, not the consumer's account.
- C. The task 'aggregate_data' is executing with definer's rights (OWNER) of the application, so the grant of SELECT privilege to 'app_public' is sufficient, and there is likely an issue with transient network connectivity.
- D. The stored procedure is executed with caller's rights (CALLER), but the application role 'app_public' doesn't have sufficient warehouse privileges in the consumer account.
- E. The stored procedure is executed with caller's rights (CALLER), and the 'EXECUTE TASK privilege wasn't granted correctly, which causes the user to randomly lose access on the Snowflake Ul.
Correct Answer: B 🗳️
Explanation: Only visible for VCE4Plus members. You can sign-up / login (it's free).
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