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Snowflake NAS-C01 Exam Syllabus Topics:

Snowflake SnowPro Specialty - Native Apps Sample Questions:

Question 1

You've installed a Snowflake Native Application that provides advanced data analytics. The application requires a consumer-defined function (UDF), 'MASK SENSITIVE DATA, to be created in their account and used by the application. The application's setup script includes logic to check for the UDF's existence, but you want to ensure the application gracefully handles the case where the consumer has not yet created the UDF. Which of the following strategies can you implement to improve the application's resilience and provide a better user experience in this scenario? Select all that apply.

A. Require the consumer to create the UDF before installing the application. The application setup script should fail if the UDF is not found, preventing installation.
B. In the application's setup script, create a placeholder UDF with the same name and signature as 'MASK SENSITIVE DATA' that returns 'NULL'. The application logic can then handle 'NULL' values appropriately until the consumer provides the actual UDF.
C. Implement error handling within the application's code to catch the 'SQL compilation error: UDF does not exists exception. Provide a user-friendly error message and instructions on how to create the UDF.
D. Within the application's SQL code, use the 'TRY FUNCTION' function to call 'MASK SENSITIVE DATA'. If the UDF does not exist, 'TRY FUNCTION' will return 'NULL' instead of raising an error.
E. Dynamically generate the application code using a stored procedure, only including the parts of the code that rely on if the function exists. Use 'SYSTEM$GET PRIVILEGES()' to check existence.

Question 2

A Snowflake Native Application, leveraging Snowpark Container Services (SPCS), is designed to perform complex data transformations on data residing within the customer's Snowflake account. The transformations require significant computational resources, and the container occasionally encounters resource constraints, leading to performance degradation. Which of the following strategies can you employ to optimize resource utilization and ensure the container runs efficiently within the customer's SPCS environment?

A. Rewrite the data transformation logic to utilize Snowflake's built-in SQL functions and stored procedures whenever possible. Move the transformation workload out of the container.
B. Increase the size of the virtual warehouse associated with the SPCS compute pool. This directly provides more computational resources to the container.
C. Implement horizontal scaling within the container by deploying multiple replicas of the application and distributing the workload among them using a load balancer. The consumer must configure the number of replicas.
D. Increase the memory and CPU limits specified in the 'spec.yaml' file for the Snowpark Container Services deployment. This provides the container with more resources within the allocated compute pool.
E. Optimize the container image by removing unnecessary dependencies and libraries, reducing its overall size and startup time.

Question 3

You are developing a Snowflake Native Application for a financial institution that needs to be deployed across multiple cloud providers (AWS, Azure, GCP) to minimize latency for their global customer base. The application relies on a secure and consistent method for accessing external services for real-time market dat a. Which of the following strategies would BEST ensure cross-cloud functionality and adherence to Snowflake Marketplace best practices for secure data access?

A. Use Snowflake's Network Rules feature in conjunction with external functions that leverage API integration objects, storing the secret material necessary to authenticate with the external API. Leverage Snowflake's built-in cross-cloud replication capabilities to ensure data consistency.
B. Create separate versions of the Native Application for each cloud provider, each with customized configurations for accessing the external services. Publish each version separately on the Snowflake Marketplace.
C. Use Snowflake's external functions with secure OAuth authentication to access the external services, leveraging Snowflake's built-in cross-cloud replication capabilities to ensure data consistency.
D. Package the external service client libraries directly within the Native Application and configure the application to dynamically discover the nearest available endpoint at runtime, storing credentials within a Snowflake secret.
E. Hardcode cloud-specific endpoint URLs for the external services in your application code, using conditional statements to determine the correct endpoint based on the Snowflake cloud region.

Question 4

A Snowflake Native App developer encounters an issue where the application fails to install on a consumer's account due to insufficient privileges. The developer has verified that the necessary privileges are declared in the application. privileges section of the manifest file. However, the installation still fails. What could be the most likely cause of this issue, and how can it be resolved?

A. The consumer account has object level grants conflicting with the required grants. Revoke the object level grants and try again.
B. The consumer's account does not have the SNOWFLAKE.APP_INSTALLER role enabled. Ensure this role is granted to the appropriate user.
C. The privileges declared in the manifest file are not supported by the consumer's Snowflake edition. Review and adjust the required privileges.
D. The consumer's account is not on the same Snowflake region as the provider account. Verify and align the regions.
E. The privileges were declared in the manifest file, but were not actually granted to the application role in the provider account before creating the version. Grant the declared privileges to the application role using GRANT ON ACCOUNT TO APPLICATION ROLE and create a new version.

Question 5

You're developing a Snowflake Native Application that stores user preferences in a table named 'USER PREFERENCES'. In version 1.0, this table only contained 'USER ID and 'THEME' columns. In version 2.0, you need to add a new 'LOCALE' column with a default value of 'en-CIS'. However, existing users should retain their existing preferences and not have the new 'LOCALE' column set to 'NULL'. Which of the following 'setup.sql' scripts correctly implements this requirement during the version upgrade?

A.

B.

C.

D.

E.

Solutions: