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Snowflake NAS-C01 Exam Syllabus Topics:

Snowflake SnowPro Specialty - Native Apps Sample Questions:

1. You are developing a Snowflake Native App that performs data transformations. The core logic is implemented in a series of stored procedures. You need to implement versioning for your app to allow for future updates and rollbacks. Which of the following steps are REQUIRED to properly implement versioning for a Snowflake Native App?

A) Use the 'ALTER APPLICATION' command to update the app's version in the consumer's account.
B) Create a separate branch in your version control system for each version of the app.
C) Tag each release in your version control system with the corresponding version number.
D) Increment the 'version' attribute in the 'MANIFEST.yml' file for each new release.
E) Update the 'version' attribute in the 'setup.sqr file, if one exists.

2. You are developing a complex Snowflake Native Application with multiple Python modules and dependencies. You've carefully crafted your 'environment.yml' file, but during the installation process in a consumer account, you encounter intermittent errors related to package conflicts. These errors are difficult to reproduce consistently. What is the MOST effective strategy, encompassing both design and troubleshooting, to mitigate these dependency resolution issues and ensure a reliable installation experience for your users? Select TWO options.

A) Implement robust error handling in your Python modules to catch potential 'ImportError' exceptions and provide informative error messages to the user, even if the underlying cause is a dependency conflict.
B) Examine the Snowflake logs ('SYSTEM$GET_PREDECESSORS' and 'SYSTEM$GET_DEPENDENTS') for any other applications installed in the consumer account that might be conflicting with your application's dependencies.
C) Pin all dependencies to specific versions in your 'environment.yml' file, including transitive dependencies, to create a deterministic and reproducible environment.
D) Vendor all third-party Python dependencies directly into your application package (i.e., include the package code directly instead of relying on Conda installation). This creates a self-contained application with no external dependencies.
E) Use a broad range of package versions in your 'environment.ymr file to allow for flexibility during dependency resolution, reducing the likelihood of conflicts.

3. A Snowflake Native App developer wants to externalize certain configuration values so that a consumer can adjust the app's behavior without modifying the app's code directly. Which of the following methods is the MOST appropriate for achieving this using the Snowflake Native App Framework?

A) Using Snowflake variables and setting them at the session level.
B) Hardcoding the configuration values directly into the SQL code.
C) Defining parameters in the manifest file and using them within the application code.
D) Using dynamic SQL to modify the application code at runtime based on environment variables.
E) Storing the configuration values in a separate Snowflake table within the consumer account.

4. You are developing a Snowflake Native App that uses JavaScript stored procedures. During consumer testing, you observe inconsistent behavior: sometimes the app works perfectly, other times it throws intermittent 'JavaScript out of memory' errors. You suspect a memory leak in your JavaScript code. Which of the following actions could help you diagnose and resolve this issue effectively?

A) Refactor your JavaScript code to minimize the creation of large, temporary objects and ensure that objects are properly garbage collected by setting unused object references to 'null'.
B) Increase the warehouse size for the consumer's instance where the app is installed, assuming larger warehouses always provide more memory for JavaScript execution.
C) Contact Snowflake support immediately, as 'JavaScript out of memory' errors always indicate a platform bug.
D) Use the 'INFORMATION SCHEMA.QUERY HISTORY view on the consumer account to examine the query profiles of the JavaScript stored procedures, looking for excessive memory consumption or spillover to local storage.
E) Enable detailed logging within your JavaScript stored procedures using 'CALL SYSTEM$LOG(...)'})$ and analyze the logs for excessively large data structures or recursive function calls.

5. Consider the following 'manifest.yml' file for a Snowflake Native App:

A) The application will fail to install because the version property is missing. Each version must explicitly be specified in the manifest file.
B) The application will fail to install because no 'privileges' are listed in the manifest file. All applications must declare the necessary privileges.
C) The application version will be automatically assigned by Snowflake during the installation process on the consumer side.
D) The application version will default to '0.1.0' and the application can be installed successfully by any consumer account.
E) The application version will default to '0.0.1'. If the application includes a view, then the view needs access to the user data and must have a privilege declared to allow users to view data from the application.

Solutions: