The Best Snowflake NAS-C01 Exam Questions

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Snowflake NAS-C01 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Deployment and Marketplace Publishing	25%	- Distribution and lifecycle management 1. Marketplace listings and publishing 2. Version upgrades and release management
Topic 2: Snowflake Native App Framework Overview	20%	- Native application concepts and architecture 1. Manifest files and setup scripts 2. Application packages and structure
Topic 3: Installation, Testing and Troubleshooting	20%	- Validation and debugging 1. Logging and event tables 2. Tracing and troubleshooting workflows
Topic 4: Native Application Design and Creation	35%	- Application development workflow 1. Application roles and privileges 2. Building and versioning applications

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Snowflake SnowPro Specialty - Native Apps Sample Questions (Q341-Q346):

NEW QUESTION # 341
Consider the following 'manifest.yml' file for a Snowflake Native App:

A. The application version will default to '0.1.0' and the application can be installed successfully by any consumer account.
B. 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.
C. The application will fail to install because no 'privileges' are listed in the manifest file. All applications must declare the necessary privileges.
D. The application will fail to install because the version property is missing. Each version must explicitly be specified in the manifest file.
E. The application version will be automatically assigned by Snowflake during the installation process on the consumer side.

Answer: D

Explanation:
A valid version is mandatory in 'manifest.yml' to install native apps. When version is missing, the installation will fail.

NEW QUESTION # 342
You are developing a Snowflake Native Application intended for the Snowflake Marketplace. The application provides data transformation services, leveraging external functions (UDFs) that invoke a REST API hosted on AWS Lambd a. You need to ensure the secure and compliant invocation of this external API from your application while adhering to Snowflake's best practices. Which of the following steps represent the MOST secure and recommended approach for configuring and invoking the external function?

A. Store the AWS Lambda function's URL and credentials (API key) in a configuration table within the Snowflake Native Application package. The external function retrieves these credentials from the configuration table at runtime. Configure an alert if the configuration table is modified.
B. Use Snowflake's built-in network rules to allow outbound traffic to all AWS IP ranges. Store the API key directly in the UDF definition as an environment variable.
C. Create an API integration object in Snowflake that stores the AWS Lambda function's URL and credentials (API key) directly within the integration. Grant the necessary permissions to the application's roles to use the API integration. Define the external function to call the Lambda function URL directly, referencing the API key from the integration object.
D. Expose the AWS Lambda function publicly with no authentication. Configure the external function in Snowflake to point to the public Lambda URL. Document to consumers that the API has no security.
E. Create an API integration object in Snowflake, configuring a secure authentication mechanism such as AWS IAM roles or OAuth 2.0. Define the external function to use the API integration, providing the necessary parameters for authentication. Configure network policies and secrets (using Snowflake secrets) to secure the connection. Ensure your AWS Lambda function validates the incoming request's identity.

Answer: E

Explanation:
The MOST secure and recommended approach (Option C) involves creating an API integration object in Snowflake with secure authentication (IAM roles or OAuth 2.0), defining the external function to use the integration, and leveraging network policies and secrets for enhanced security. This aligns with Snowflake's security best practices. Option A is less secure as it stores the API key directly in the integration. Option B is completely insecure. Option D poses a security risk storing credentials within a table. Option E involves blanket outbound access and storing the API key directly in the UDF (bad).

NEW QUESTION # 343
A data provider is building a Snowflake Native Application that provides real-time stock market data through a Snowflake Marketplace listing. They have implemented a secure data sharing mechanism. To update the data in the listing with minimal downtime and ensure continuous availability for their consumers, which strategy should they employ?

A. Utilize Snowflake's cloning feature to create a duplicate of the shared database, update the data in the clone, and then swap the original and cloned databases using 'ALTER DATABASE SWAP WITH'.
B. Create a new version of the Snowflake Native Application containing the updated data and deprecate the previous version. Consumers will need to migrate to the new version.
C. Use tasks and streams to incrementally refresh the data in the shared database. Implement error handling to manage potential data inconsistencies.
D. Perform direct updates to the tables within the shared database. Use SALTER TABLE ... SWITCH WITH' to minimize locking during the update process, creating new tables with updated data.
E. Completely replace the underlying shared database with a new version during off-peak hours.

Answer: C

Explanation:
Using tasks and streams allows for incremental data updates, minimizing downtime and providing continuous data availability. Error handling is crucial for maintaining data consistency. Swapping databases is not possible because native apps control the database, and consumers access it via a share. Simply updating the table will cause downtime for consumers.

NEW QUESTION # 344
You have successfully deployed your Snowflake Native Application Package to an external stage (AWS S3), but consumers are reporting they are not receiving updates after you deploy new versions to the external stage. You have verified that the IAM role, Snowflake integration, and S3 bucket policy are correctly configured. What steps should you take to troubleshoot and resolve this issue?

A. Verify that the SNOWFLAKE DEPLOYMENT role has been granted ownership of the Integration object used for accessing the external stage.
B. Grant the APPLICATION ROLE to the SNOWFLAKE DEPLOYMENT role on the application package. This allows the deployment process to automatically update the consumer instances.
C. Execute the 'ALTER APPLICATION PACKAGE REFRESH' command after each deployment to the external stage. This explicitly informs Snowflake to refresh the application package metadata.
D. Ensure the S3 bucket has versioning enabled. Snowflake relies on S3 versioning to detect new application package versions.
E. Consumers must manually refresh their installed application instance using the command 'ALTER APPLICATION REFRESH;' after a new package version is deployed.

Answer: C,E

Explanation:
To ensure consumers receive updates after deploying new versions, the APPLICATION PACKAGE metadata must be refreshed, and consumers must update their application instances. Executing 'ALTER APPLICATION PACKAGE REFRESH' after each deployment (B) updates the Snowflake metadata about the available package versions. Consumers must then refresh their instance using 'ALTER APPLICATION REFRESH;' (C) to pick up the new version. S3 versioning (A) is not directly related to the update process in Snowflake Native Applications, and the APPLICATION ROLE(D) and ownership of integration (E) do not affect update distribution.

NEW QUESTION # 345
You are designing a Snowflake Native Application that processes customer dat a. To comply with data residency requirements, you need to ensure that the application logic runs within the customer's Snowflake account, but the application code is owned and managed by your organization. Which of the following approaches BEST achieves this requirement while providing version control and updates?

A. Embedd the raw application code directly into the SETUP script so that it gets re-deployed on every run.
B. Develop the application using Snowflake's Snowpark API and package the compiled code within the application package. The setup script will execute the Snowpark code within the customer's Snowflake account.
C. Build the application logic as a set of stored procedures and UDFs within the application package. Provide a setup script that creates these objects in the customer's account during installation.
D. Use Snowflake's Data Sharing feature to directly share the database and schema containing the application logic with customers. Grant them ownership of these objects.
E. Create a Docker container containing the application logic and deploy it as a Snowflake External Function. Share the container image with customers and instruct them to deploy it in their environment.

Answer: B,C

Explanation:
Options A and C are correct. Creating stored procedures and UDFs within the application package, along with a setup script, allows you to deploy the application logic to the customer's account while retaining ownership of the application package. Option C allows you to use Snowpark to write complex logic that can execute within the secure Snowflake environment. Option B is not ideal because it involves managing Docker containers outside of Snowflake. Option D violates the requirement to retain ownership of the application logic and potentially exposes sensitive data, and it also doesn't lend itself to easy version control for application code. Option E is incorrect, because the raw application code can get exposed during the process.

NEW QUESTION # 346
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