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Snowflake NAS-C01 Exam Syllabus Topics:

Snowflake SnowPro Specialty - Native Apps Sample Questions:

Question 1

You are designing a Snowflake Native Application that uses Streamlit for its user interface. The application requires users to authenticate with their Snowflake credentials before accessing any dat a. The application also implements Role Based Access Control (RBAC) using application roles. After successful authentication, you need to securely determine the user's current role within the application and store it for subsequent authorization checks within Streamlit. Which of the following represents the most secure and reliable approach to achieve this?

A. Execute 'SELECT after successful authentication and store the role name in a Streamlit session state variable Cst.session_state' ). Retrieve the role name from the session state for authorization checks.
B. Rely on Snowflake's built-in auditing features to implicitly track user access and role assignments. Avoid storing the role within the Streamlit application.
C. Fetch the user's Snowflake username using 'SELECT after successful authentication. Create a mapping table within the application that associates usernames with roles. Lookup the role based on the username from this table.
D. Use a custom authentication system that bypasses Snowflake's native authentication. Store user roles directly within the application's metadata. Use this system when you need more control over roles.
E. After successful authentication using Snowflake credentials, configure the Streamlit application to execute 'SELECT CURRENT ROLE()' and immediately create temporary tables and views based on this role with session control. Let Snowflake control RBAC.

Question 2

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 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.
B. The consumer has not refreshed their application instance metadata. Ask the consumer to execute SYSTEM$REFRESH_EXTERNAL_FUNCTIONS() in the application database.
C. 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().
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. Event sharing is inherently unreliable and Snowflake does not guarantee event delivery. The provider should implement alternative polling mechanisms.

Question 3

Within a Snowflake Native Application, you need to implement a feature that is only available in the latest version of the application, and the usage of that feature needs to be tracked. How would you accomplish this within the application code, considering that you want to avoid exposing internal details about version numbers directly to the consumer?

A. Use the 'APPLICATION$VERSION' function within a stored procedure to conditionally enable the feature and log the usage to a separate table. Make sure the logs are maintained within the producer account.
B. Rely on the consumer to explicitly enable the feature through a configuration parameter, then log the feature's usage.
C. Create a separate role that is only granted to users of the latest version, and use this role to control access to the feature. Use a view to abstract the role requirement.
D. Implement a UDF (User-Defined Function) that checks the application version and returns a flag indicating whether the feature is available. Use this flag in SQL queries to conditionally enable the feature and track its usage.
E. Use Snowflake's Resource Monitors to track resource usage by different versions of the application.

Question 4

You are developing a Snowflake Native Application that needs to be deployed across multiple Snowflake accounts. The application includes a setup script that creates several tables and stored procedures. However, some consumers might have naming conflicts with the objects created by your setup script. Which of the following strategies can you use to minimize naming conflicts and ensure smooth application deployment? (Select all that apply)

A. Package all application objects into a dedicated schema within the consumer's database.
B. Dynamically generate object names within the setup script using the application's name and a random suffix.
C. Instruct consumers to drop any conflicting objects before installing the application.
D. Utilize the 'CREATE OR REPLACE syntax for all objects in the setup script to overwrite any existing objects.
E. Prefix all objects created by the setup script with a unique, application-specific identifier.

Question 5

You are developing a Snowflake Native Application that includes a Python module for data transformation. This module relies on the pandas' and 'requests' libraries. You are using an 'environment.yml' file to manage dependencies. Which of the following 'environment.yml' configurations is the MOST secure and correct way to define these dependencies for your application? Assume you want to install these packages directly from conda-forge channel.

A.

B.

C.

D.

E.

Solutions: