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Snowflake NAS-C01 Exam Syllabus Topics:

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

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Snowflake SnowPro Specialty - Native Apps Sample Questions (Q289-Q294):

NEW QUESTION # 289
You are building a Snowflake Native Application that provides a data transformation service. You want to allow consumers to configure certain aspects of the transformation pipeline (e.g., the name of the target table, specific transformation logic). What are the recommended approach(es) to allow consumers to customize the application's behavior without directly modifying the application code?

A. Expose parameters within the setup script and stored procedures that consumers can set during application installation or execution.
B. Include default configurations within a file on the external stage, which consumers are expected to download, modify, and then upload back as a different file for the application to load.
C. Require consumers to fork the application's repository and modify the SQL code directly.
D. Utilize Snowflake's Secure UDFs (User-Defined Functions) and allow consumers to provide their own UDFs as configuration.
E. Implement a configuration table within the application's schema that consumers can update with their desired settings. The application code reads these settings at runtime.

Answer: A,E

Explanation:
Options B and D are correct. Exposing parameters in the setup script and stored procedures is a standard way to allow customization during installation and execution. A configuration table provides a flexible way for consumers to manage settings that can be read by the application. Option A is incorrect because forking the repository makes it difficult to manage updates and maintain security. Option C has security implications, as malicious code can be injected through user-defined UDFs. Option E is incorrect as the file download, modify, and upload method are complex for users to configure.

NEW QUESTION # 290
A Snowflake Native App developer is building an application package that contains multiple versions. They want to ensure that a consumer upgrading from version 1.0 to version 2.0 MUST execute a specific set of SQL scripts as part of the upgrade process to migrate existing application dat a. Which Snowflake Native App feature should they leverage to achieve this?

A. Snowflake Pipes to load and transform the existing data.
B. A post-install script defined in the setup script.
C. Snowflake Streams and Tasks to monitor the application version and trigger the migration scripts automatically.
D. Application Role-Based Access Control (RBAC)
E. A version change handler defined within the application package.

Answer: E

Explanation:
Option C is the correct approach. A version change handler is a dedicated script that runs automatically when a consumer upgrades or downgrades the application. This handler can contain the necessary SQL scripts to migrate data, update schemas, or perform any other actions required during the version transition. Option B executes only during initial installation, not during upgrades. Option A, RBAC, manages permissions but doesn't execute scripts. Option D, Streams and Tasks, could be used, but it's more complex than a version change handler. Option E is used for continuous data loading.

NEW QUESTION # 291
You are developing a Snowflake Native Application and need to implement robust logging for troubleshooting purposes. You want to capture detailed information about function calls, including input parameters and return values. Which of the following approaches offers the MOST comprehensive and secure solution for logging within a Snowflake Native Application, considering the limitations imposed by the Snowflake environment?

A. Using 'SYSTEM$LOG' with debug level logging and capturing logs in a secure internal stage, managed by the provider, ensuring data privacy and limited consumer access.
B. Leveraging Snowflake's event tables and configuring the application to emit custom events, then creating views on those event tables within the consumer's account.
C. Writing log messages to an external stage (e.g., AWS S3, Azure Blob Storage) that is accessible to both the provider and consumer accounts.
D. Employing 'EXECUTE IMMEDIATE to write log messages directly to a dedicated logging table within the consumer's account.
E. Using ' SYSTEM$LOG' with trace level logging and store the logs into internal stage, accessible only by the application's service user.

Answer: A

Explanation:
Option E is the most secure and comprehensive. 'SYSTEM$LOG' allows for structured logging. An internal stage ensures that the consumer does not have direct access to sensitive log data. The provider maintains control, addressing security concerns. Options A and C are less secure, as they might expose sensitive application data. Option D is generally discouraged for sensitive information due to compliance concems, and Option B is problematic because 'EXECUTE IMMEDIATE' inside an application package will be blocked.

NEW QUESTION # 292
A customer has installed your Snowflake Native Application, which utilizes a IJDF that performs complex calculations. The customer reports performance issues and sporadic errors. As the application provider, how can you BEST establish telemetry and observability to diagnose the problem, without compromising the customer's data security or privacy?

A. Implement logging within the UDF to capture execution time, input parameters (anonymized), and error messages. Store this data in an Event Table within the application provider's account and expose aggregate statistics through a secure API endpoint for the consumer to monitor.
B. Instruct the customer to enable verbose logging in their Snowflake account and provide you with the log files for analysis.
C. Utilize Snowflake's Query History to track the IJDF's performance in the customer's account and provide recommendations based on the observed query patterns.
D. Request direct access to the customer's Snowflake account to inspect the IJDF execution logs and query performance metrics.
E. Create a shared view on the UDF execution logs in the customer's account, granting you read-only access to the relevant information.

Answer: A

Explanation:
Option B provides a balanced approach to observability and security. By logging anonymized input parameters and execution time within the IJDF and storing the data in an Event Table in the application provider's account, you can analyze performance and identify errors without directly accessing the customer's sensitive data. Exposing aggregate statistics allows the customer to monitor the application's performance. The other options either compromise security or rely on the customer to provide data, which might not be feasible or secure.

NEW QUESTION # 293
You are responsible for managing the pricing plans for your Snowflake Native Application listed on the Marketplace. You want to offer a 'Premium' tier that includes additional features and resources. To achieve this, you need to modify the listing to include this new pricing option. Which of the following steps are NECESSARY and in the CORRECT order to successfully add the 'Premium' tier to your application's listing, ensuring existing customers are not negatively impacted? (Choose two options in their proper order)

A. 1. Update the listing on the Marketplace with the new pricing tier. 2. Ensure backward compatibility for existing customers by implementing logic in the application to detect their current tier and maintain existing functionality.
B. 1. Create a new version of the application package in your provider account with the code changes supporting the 'Premium' features. 2. Update the Marketplace listing with the new version of the application and add the 'Premium' pricing tier with appropriate settings.
C. 1. Modify the existing application package in place to include the code changes supporting the 'Premium' features. 2. Update the Marketplace listing with the modified application and add the 'Premium' pricing tier with appropriate settings.
D. 1. Update the Marketplace listing by adding the 'Premium' pricing tier with appropriate settings, but without modifying the application package. 2. Inform existing customers that the new pricing tier is available.
E. 1. Test new Pricing in a Sandbox environment with few consumers. 2. Deploy the new version to the consumer accounts.

Answer: A,B

Explanation:
The correct answer is A then E. First, a new version of the application package (A) is created with the code changes to support the 'Premium' features. Then, the Marketplace listing is updated with the new version and the 'Premium' pricing tier. It's also important to ensure backward compatibility for existing customers (E) so their experience is not negatively affected after the update. Option B is incorrect because modifying the existing application package in place can cause issues for existing installations. Option C is incorrect because you must implement the new features. Option D is relevant but it's not what the question is asking for and it is not a comprehensive answer.

NEW QUESTION # 294
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