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Snowflake SnowPro Specialty - Native Apps Sample Questions:

1. You are developing a Snowflake Native Application that performs complex data transformations. As part of your development lifecycle, you need to ensure that your code behaves idempotently even when facing intermittent network errors or unexpected disruptions. Consider the following function written in Snowpark Python that updates a table:

What modification is necessary to make this function idempotent against disruptions during the writing process to Snowflake and unexpected execution?

A) Create a temporary table, write the transformed data to the temporary table, and then atomically rename the temporary table to the original table name.
B)

C) Use a 'MERGE statement to selectively update only changed rows, while ignoring existing ones.
D) Leverage Snowflake's 'TRANSACTIONAL_REPLICATION' to replicate the operations to minimize data loss in between failures.
E) Wrap the 'df.write' operation in a retry mechanism with exponential backoff to handle intermittent network errors.

2. A developer is creating a Snowsight dashboard to monitor the performance of a Snowflake Native App. They want to display a real-time graph of the number of API calls made to the app per minute. The app logs each API call to a Snowflake table named 'APP LOGS' with a timestamp column named 'CALL TIMESTAMP'. Which of the following SQL queries, when used within a Snowsight chart, would MOST accurately achieve this?

A)

B)

C)

D)

E)

3. You have developed a Snowflake Native Application that utilizes a Python UDF to perform sentiment analysis on customer reviews. During consumer testing, you notice that the application is throwing 'ModuleNotFoundError: No module named 'transformers" errors on the consumer's account, even though the 'transformers' library is included in your application's packages directory. Select the two options that best address this issue:

A) Verify that the application role has sufficient privileges (USAGE) on the 'transformers' library and that the consumer account's security policies allow access to external packages. The consumer account must explicitly allow the usage of external packages in their account-level security settings.
B) Ensure the 'transformers' library is explicitly listed in the 'manifest.ymr file under the 'packages' section and that the application's setup script correctly installs the package using 'pip install transformers.
C) Check if the consumer account has any conflicting Python packages installed that might be shadowing the 'transformers library. Use the 'SHOW PACKAGES' command in Snowflake to list installed packages and their versions on the consumer account.
D) In the UDF code, explicitly add the application's packages directory to the Python path using 'sys.path.append('/app/packages')' before importing the 'transformers' library. Also, bundle the 'transformers' package along with its dependencies into a single zip file and upload it to an internal stage.
E) Confirm that the application is built using a compatible Python version (e.g., 3.8) with the consumer's environment, and that the 'PYTHON_VERSION' property in the 'manifest.ymr file is set accordingly. Additionally, regenerate the package directory with all dependencies using 'conda' instead of 'pip'.

4. Your team is developing a Snowflake Native App that requires access to network resources outside of Snowflake. After configuring an external access integration, you encounter an error indicating that the application cannot access the specified endpoint, even though the integration appears to be correctly configured. Assuming all network policies are in place and the external access integration is correctly defined, what is the MOST likely cause of this issue and how can it be resolved?

A) The application role used by the application lacks the ' IMPORTED PRIVILEGES privilege on the external access integration. Grant this privilege using 'GRANT IMPORTED PRIVILEGES ON INTEGRATION TO APPLICATION ROLE
B) The URL specified in the external access integration is incorrect or contains a typo. Verify the URL and ensure it matches the expected endpoint.
C) The network policy attached to the external access integration is too restrictive and is blocking access to the required endpoint. Review and update the network policy to allow access to the endpoint.
D) The application needs to be explicitly granted the USAGE privilege on the external access integration. Use 'GRANT USAGE ON INTEGRATION TO APPLICATION ROLE
E) The external function or procedure attempting to use the integration has not been granted the REFERENCE USAGE privilege on the integration. Use 'GRANT REFERENCE USAGE ON INTEGRATION TO PROCEDURE ;

5. A provider is developing a Snowflake Native App. They have created a database named 'app_db' using 'CREATE DATABASE app_db WITH MANAGED ACCESS;'. Subsequently, they need to create a schema within this database and grant specific privileges on the schema's objects to a role 'app_admin' . Which of the following SQL statements are valid and necessary to set this up securely and effectively?

A)

B)

C)

D)

E)

Solutions: