You are developing a Snowflake Native Application that needs to securely access data in a consumer's account. The application requires the consumer to grant specific privileges to a custom role created and managed within the application package. Which of the following steps are absolutely essential for correctly configuring the application package to ensure this secure data access, and how should the setup script handle the privilege granting?

• A. The consumer must manually grant the necessary privileges to the application's role after the application is installed, as the application package cannot automatically modify the consumer's security settings.
• B. Create a share from the provider account to the consumer account, granting the consumer read access to the application package's data. Then, use a setup script to grant ownership of the data to the application role after installation.
• C. Grant the 'USAGE privilege on the consumer's database and schema to the application's role within the setup script. This implicitly allows the application to read all data within that schema.
• D. Define the required privileges in the application package manifest (snowflake.yml). Ensure that the setup script includes commands to grant the specific privileges on the consumer's data to the application's custom role, using 'GRANT ON TO ROLE within an EXECUTE IMMEDIATE statement in the setup script. The setup script should also define the application role.
• E. Utilize a service account to access the data, providing the service account's credentials as part of the application setup. The application will then use the service account to access the consumer's data.

A Snowflake Native Application provider has encountered performance issues with a Scala-based UDF, 'aggregate data' , used within their application. Consumers report slow execution times when processing large datasets. The provider has identified that the UDF involves complex calculations and data transformations. Which optimization techniques can be applied to improve the performance of the 'aggregate_data' UDF within the constraints of the Snowflake Native Application environment?

• A. Move the entire UDF logic to an external cloud function (e.g., AWS Lambda, Azure Function) and invoke it from Snowflake using a remote service. This offloads the computation to a more powerful environment.
• B. Optimize the UDF's data structures and algorithms to reduce memory usage and improve processing efficiency. Consider using techniques such as caching frequently accessed data within the UDF.
• C. Utilize Snowflake's vectorized UDF feature (if supported for Scala UDFs) to process data in batches, reducing the overhead of calling the UDF for each individual row.
• D. Leverage Scala's parallel collections (e.g., 'par') to distribute the workload across multiple cores during data processing. Ensure that the UDF is designed to be thread-safe.
• E. Replace the Scala UDF with a Snowflake stored procedure written in SQL. Stored procedures generally offer better performance for data-intensive operations.

You are tasked with developing a Snowflake Native Application that allows consumers to securely access and analyze data from an external API. Your application needs to handle API authentication using OAuth 2.0, refresh tokens automatically, and provide a user- friendly interface for consumers to configure the API connection. Which of the following steps are CRITICAL for ensuring secure and seamless integration with the external API within your Snowflake Native Application?

• A. Embed the OAuth 2.0 client library directly into your application's code and handle token management within the application logic.
• B. Utilize Snowflake's Secret objects to securely store the client ID and client secret. Use the object within your Snowflake Native App to make the application consumer-configurable.
• C. Require consumers to manually configure the OAuth 2.0 connection details (client ID, client secret, token endpoint, etc.) within their Snowflake account and then pass these details as parameters to your application's functions.
• D. Use Snowflake's External Functions to call an API Gateway to obtain authentication tokens and then make calls to External API.
• E. Store the client ID and client secret directly within the application's setup script.

You are developing a Snowflake Native App that requires accessing a specific table within the consumer's account. The consumer should not have direct access to this table. Which of the following is the MOST secure and appropriate method to grant the necessary access?

• A. Creating a Snowflake Secure UDF that queries the table within the provider account and exposing the UDF to the consumer account through a package.
• B. Granting the CONSUMPTION usage privilege on the provider account database to the consumer account, and then granting SELECT on the specific table to a role that the app assumes.
• C. Creating a Snowflake Secure View on the table in the provider account and sharing this view with the consumer account using Data Sharing.
• D. Employing a Stored Procedure owned by the application role that queries the table in the provider account, and allowing access to the procedure via API integration.
• E. Granting direct SELECT access to the consumer role on the table in the provider account, ensuring to revoke access after the app is installed.

You are managing a Snowflake Native Application that allows consumers to configure certain aspects of its behavior through a dedicated configuration table. The application logic relies on specific values within this table to function correctly. During a new version deployment, you need to ensure that existing consumer configurations are migrated to the new version's configuration table structure without disrupting the application's availability. Which of the following strategies would you use to perform a zero-downtime configuration migration?

• A. Perform an in-place alteration of the existing configuration table to match the new schema. This might involve adding, dropping, or renaming columns. Update the application code to reflect these changes. If you need to rename tables, then use SALTER TABLE ... RENAME to minimize downtime.
• B. Rename the existing configuration table to a backup name. Create a new configuration table with the new schema. The application will start using the new empty table, and consumers can manually reconfigure their settings.
• C. Deploy the new application version with a feature flag that disables the configuration table dependency. Run a script in the background to migrate the data to the new table and then flip the feature flag to enable the new configuration.
• D. Drop the existing configuration table and recreate it with the new schema during the application upgrade process. The application will automatically adapt to the new schema once the upgrade is complete.
• E. Implement a parallel migration strategy. Create a new configuration table with the new schema alongside the existing one. Update the application code to read from both tables concurrently, prioritizing the new table if values are present. Schedule a background job to migrate data from the old table to the new table. Once the migration is complete and verified, switch the application to solely read from the new table and eventually drop the old one.