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Snowflake NAS-C01 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Native Application Design and Creation	35%	- Application development workflow 1. Application roles and privileges 2. Building and versioning applications
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: Deployment and Marketplace Publishing	25%	- Distribution and lifecycle management 1. Version upgrades and release management 2. Marketplace listings and publishing

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Snowflake SnowPro Specialty - Native Apps Sample Questions (Q288-Q293):

NEW QUESTION # 288
A financial services company is developing a Snowflake Native App. It needs to securely access external market data via an API and store the processed results in a consumer-provided table. Considering security best practices and the Snowflake Native App Framework limitations, which of the following approaches represents the MOST secure and recommended implementation for this scenario?

A. Utilize a Java UDF with the 'network access' capability to call the external API directly from within the UDF. Store the processed data directly into a consumer- provided table by using the application role with INSERT privilege granted by consumer.
B. Use a Snowflake external function with an API integration that passes the API key as a parameter. Store the processed data in a consumer-provided table using dynamic SQL.
C. Utilize a Python UDF with the 'external network access' capability to call the external API directly from within the UDF. Store the processed data directly into a consumer-provided table by using the application role. API key is stored in snowflake secret.
D. Employ a Snowflake external function, configured with a service account, which invokes an API integration stored in the provider account. The external function returns the data, which is then inserted into a consumer-owned table using a stored procedure and INSERT statements, where the application role has been granted the necessary INSERT privilege.
E. Use a Snowflake external function with an API integration, configured with a service account that has the necessary permissions to access the API. Store the processed data in a consumer-provided table using stored procedures and INSERT statements using the application role.

Answer: D

Explanation:
Extemal functions with API integrations are recommended for secure external API access. Using a service account for authentication is a best practice. Stored procedures allow for managed access control to consumer-provided tables. It is safer and allows for managed security. Option E combines these best practices for a secure and robust solution.

NEW QUESTION # 289
You are tasked with developing a Snowflake Native App that leverages a Partner provided secret using an external function which will send the processed data to their system. You plan to store the OAuth information to be used by the external function in a secret object managed by Snowflake. Which of the following steps are NECESSARY to ensure secure and correct setup of this app? Select all the options that apply.

A. Bypass storing the OAuth token in Snowflake and instead rely on passing it as a parameter to the external function from the consumer account, documented clearly for the consumer's security responsibilities.
B. Grant the 'IMPORTED PRIVILEGES privilege on the database containing the Secret object to the application role. GRANT IMPORTED PRIVILEGES ON DATABASE TO APPLICATION ROLE '
C. Grant the 'USAGE privilege on the API integration to the application role if the external function requires an API integration. GRANT USAGE ON API INTEGRATION TO APPLICATION ROLE
D. Store the OAuth token directly within the external function's definition as a variable, ensuring it is encrypted using AES ENCRYPT before deployment.
E. Create a Secret object in Snowflake to store the OAuth token securely and reference it within the external function using 'SYSTEM$GET_SECRET function. Ensure proper access rights on the Secret object.

Answer: B,C,E

Explanation:
Storing the OAuth token directly in the function (A) is insecure. Passing the OAuth token from the consumer (E) is not a recommended practice. The correct approach is to use Snowflake's Secret object (B) to store the token securely. The application role needs 'IMPORTED PRIVILEGES on the database containing the secret (C) to access the secret. The 'USAGE privilege on the API integration(D) is also needed if the external function leverages an API integration.

NEW QUESTION # 290
You are building a Snowflake Native Application that relies on a complex transformation pipeline. This pipeline involves multiple SQL scripts and User-Defined Functions (UDFs). To manage this complexity, you want to ensure that the deployment process is automated and repeatable. Which approach would you consider to manage the deployment and versioning of your application code and its database objects?

A. Use a deployment tool like Flyway or Liquibase to manage database schema changes and versioning, integrating it into your application's setup script.
B. Store SQL Scripts and UDFs external to the application, providing instructions to the consumers to manually download and install.
C. Rely exclusively on Snowflake's built-in version control features (if available), which automatically manage schema changes.
D. Package all SQL scripts and UDFs into a single, large SQL file and execute it during installation.
E. Manually execute each SQL script and UDF creation statement in the consumer's Snowflake environment.

Answer: A

Explanation:
Using a deployment tool like Flyway or Liquibase (C) enables you to manage database schema changes and versioning in an automated and repeatable manner. These tools allow you to define migrations, apply them in a controlled sequence, and track changes over time. Executing scripts manually (A) is prone to errors and not scalable. A single large SQL file (B) becomes difficult to manage and troubleshoot. Storing SQL scripts external to the application (D) increases risk as the application is tightly linked to external artifacts. Snowflake itself does not provide build-in schema version control(E).

NEW QUESTION # 291
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. Execute the 'ALTER APPLICATION PACKAGE REFRESH' command after each deployment to the external stage. This explicitly informs Snowflake to refresh the application package metadata.
B. Consumers must manually refresh their installed application instance using the command 'ALTER APPLICATION REFRESH;' after a new package version is deployed.
C. Grant the APPLICATION ROLE to the SNOWFLAKE DEPLOYMENT role on the application package. This allows the deployment process to automatically update the consumer instances.
D. Verify that the SNOWFLAKE DEPLOYMENT role has been granted ownership of the Integration object used for accessing the external stage.
E. Ensure the S3 bucket has versioning enabled. Snowflake relies on S3 versioning to detect new application package versions.

Answer: A,B

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 # 292
A Native Application provider is developing an application that relies on data residing in a shared database, 'EXTERNAL DATA'. They want to ensure that their application role 'app_role' only has access to specific tables and views within 'EXTERNAL DATA', and they also want to minimize the need for future privilege grants as new tables are added to 'EXTERNAL DATA. Which combination of SQL statements below achieves these goals with the principle of least privilege in mind? Assume all tables are in the PUBLIC schema.

Answer: C

Explanation:
The correct answer is C. First, IMPORTED PRIVILEGES is required so that the Native App can see the database. Next, GRANT SELECT ON FUTURE TABLES IN SCHEMA EXTERNAL DATA.PUBLIC limits the scope of future grants only to the PUBLIC schema. The other options do not provide future grants scoped to the Public schema, or they grant ALL access. Options B and D require that the database USAGE privilege be explicitly granted in addition to IMPORTED PRIVILEGES, which are granted automatically when a database is shared. Option E is incorrect because 'ALL TABLES does not cover tables that will be created in the future.

NEW QUESTION # 293
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