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Snowflake NAS-C01 Exam Syllabus Topics:

Snowflake SnowPro Specialty - Native Apps Sample Questions:

1. You are tasked with automating the installation of a Snowflake Native Application across multiple consumer accounts using the Snowflake Marketplace. The installation process must be idempotent (running the installation script multiple times should not cause errors or unexpected behavior). You have the following requirements: 1. Check if the application is already installed. 2. If not installed, install the application from the Marketplace. 3. Grant specific privileges on the installed application to a role within the consumer account. Which of the following Snowflake Scripting (SnowSQL) snippets BEST implements this idempotent installation process? Assume 'application name', 'application _ package', 'consumer role', and 'marketplace listing url' are pre-defined variables.

A)

B)

C)

D)

E)

2. You are developing a Snowflake Native Application using Scala for a financial institution. The application processes sensitive transaction dat a. During consumer-side testing, the consumer reports intermittent 'java.lang.NullPointerException' errors. You suspect the issue lies within your UDE How can you effectively trace and debug this issue, considering data privacy requirements and without directly exposing sensitive consumer data in your logs?

A) Implement a custom error handling mechanism in Scala that catches 'NullPointerException', logs a generic error message with a unique error code to the event table, and then re-throws a more descriptive exception to the consumer. The consumer can then report the error code to the provider for further investigation. The provider can analyze the code, without actual consumer sensitive data.
B) Utilize 'System.out.println' statements within the Scala UDF to print debug messages directly to the query result. The consumer can view these messages to identify the source of the error, with the provider having no visibility.
C) Use Snowflake's event table to capture all exceptions, filtering for the UDF name. Redact potentially sensitive fields in the logs after extraction using a Python script executed on the provider side.
D) Rely solely on Snowflake's query history to identify failing queries. Analyze the input data and execution plan to infer the cause of the NullPointerException.
E) Implement structured logging within the Scala UDF using SLF4J and Logback. Include contextual information (e.g., transaction IDs, timestamps) at various stages of the UDF execution. Use Snowflake's masking policies on the event table to protect sensitive data during logging. This is the best method as it's the more granular and effective

3. You are packaging a Snowflake Native Application that utilizes an external function to enrich dat a. This external function requires access to an API endpoint. You've created an API integration in the consumer's account to manage access. How should you grant the necessary privileges to your application to utilize this API integration?

A) No explicit privilege granting is required. Snowflake automatically grants access to API integrations to applications within the same account.
B) Grant the OWNERSHIP privilege on the API integration to the application package using Snowsight.
C) Grant the USAGE privilege on the API integration to the application role using the command 'GRANT USAGE ON INTEGRATION TO APPLICATION ROLE within the application's setup script.
D) Create a share from your provider account containing the API integration and import it into the consumer's account.
E) Grant the EXECUTE privilege on the external function to the application role. The external function inherits the API integration's privileges.

4. You are the developer of a Snowflake Native Application. You've created a new version of your application package, v2.0. You want to perform a controlled rollout, first releasing it to a subset of your consumers for testing before making it generally available. Which sequence of steps, leveraging Snowflake's lifecycle management features, would you use to achieve this?

A) 1. Create a new APPLICATION role for beta testers. 2. Grant USAGE privilege on the application package to the beta testers APPLICATION role. 3. Grant USAGE privilege on version v2.0 to the beta testers APPLICATION role. 4. Update the default version of the application package to v2.0.
B) 1. Create a new APPLICATION role for beta testers. 2. Grant USAGE privilege on version v2.0 to the beta testers APPLICATION role. 3. Instruct beta testers to manually specify VERSION = 'v2.0' when creating their application instances.
C) 1. Instruct consumers to use the 'ALTER APPLICATION' command to upgrade to v2.0. 2. Monitor consumer feedback on the upgraded version.
D) 1. Create a new APPLICATION role for beta testers. 2. Grant USAGE privilege on version v2.0 to the beta testers APPLICATION role. 3. Update the default version of the application package to v2.0.
E) 1. Create a dedicated APPLICATION role for the application. 2. Grant OWNERSHIP on the application package to the application's APPLICATION role. 3. Update the default version of the application package to v2.0.

5. You are developing a Snowflake Native App that needs to access a secured external API to enrich customer dat a. The API requires an OAuth 2.0 token stored securely. Which of the following approaches would you use within the application manifest and Snowflake objects to securely store and access this token, minimizing exposure and adhering to best practices?

A) Hardcode the OAuth 2.0 token within the application's stored procedures. This ensures the token is readily available.
B) Store the OAuth 2.0 token as a cleartext secret in a Snowflake stage and access it using external functions.

C) Use Snowflake's SECRET object type to securely store the OAuth 2.0 token. Reference the SECRET object within the application using PARAMETERS in the manifest and utilize function in application code to retrieve it at runtime.
D) Store the OAuth 2.0 token directly in the application's manifest file as a PARAMETER. This simplifies access within the application code.
E) Store the OAuth 2.0 token as a masked comment within the application's SQL code. This will provide sufficient obfuscation.

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