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Snowflake NAS-C01 Exam Syllabus Topics:

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

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Snowflake SnowPro Specialty - Native Apps Sample Questions (Q16-Q21):

NEW QUESTION # 16
Consider the following Snowflake Native Application design scenario: You are building a data enrichment application. This application requires a consumer to grant usage on a specific database in their account. The application will then use a user-defined function (UDF) to access and enrich the dat a. To minimize the risk of data exposure and adhere to best practices, which of the following approaches should you take when designing the UDF?

A. Create the UDF without any special keywords, relying solely on the consumer's permissions to control data access.
B. Create the UDF with the EXTERNAL_ACCESS' keyword to explicitly allow it to access data outside of the application package.
C. Create the UDF with the 'SECURE keyword and implement granular access control within the UDF code, restricting access based on the application role.
D. Create the UDF with the 'VOLATILE' keyword to ensure it only runs when explicitly called, limiting the potential for unintended data access.
E. Create the UDF with the 'IMMUTABLE keyword to prevent any data modification within the consumer's database.

Answer: C

Explanation:
The 'SECURE keyword (Option B) is crucial for protecting data within a Snowflake Native Application. By creating a secure UDF, you can ensure that the UDF's code is protected from unauthorized inspection and modification. Furthermore, implementing granular access control within the UDF allows you to restrict data access based on the application's role, minimizing the risk of data exposure and adhering to best practices. 'VOLATILE, 'IMMUTABLE , and ' EXTERNAL_ACCESS' are irrelevant in this context. Not using any special keyword will not protect your data.

NEW QUESTION # 17
You are designing a Snowflake Native Application that involves data sharing with consumers. You want to leverage a custom Python library 'data_transform.py' within your application package to perform specific data transformations on the shared data before it is accessed by consumers. This library contains sensitive logic and should not be directly visible or accessible by the consumer. Which of the following is the MOST secure and appropriate way to package and utilize this 'data_transform.py' library?

A. Embed the contents of 'data_transform.py' directly within the application's stored procedure code as a multi-line string.
B. Package 'data_transform.py' as a user-defined function (UDF) and grant 'USAGE privilege on the UDF to the consumer's role.
C. Publish 'data_transform.py' as a public Python package on Anaconda and have consumers install it in their Snowflake environment.
D. Store 'data_transform.py' as an internal stage file and read it dynamically into your application's Python code at runtime.
E. Include directly within your application package's source code and call its functions from within your application's procedures. Grant necessary privileges on the procedures to the consumer's role, ensuring to only expose the procedures and never the python source.

Answer: E

Explanation:
The most secure and appropriate way to package and utilize the custom library is to include it directly within your application package's source code and call its functions from within your application's procedures. This approach ensures that the library's sensitive logic remains encapsulated within your application and is not directly visible or accessible by the consumer. Only expose stored procedures with defined permissions and never the underlaying source code. Options A, UDFs, can be a way to expose code but also requires direct granting of USAGE which is not ideal. Option C, storing as an internal stage file, adds complexity and does not inherently improve security. Option D exposes code publicly, thus, this is incorrect. Option E can be hard to maintain.

NEW QUESTION # 18
A Snowflake Native App provider is developing an application that requires a consumer to execute stored procedures owned by the application. These procedures need to access data within the application's container. Which of the following sets of actions are required for a consumer to successfully execute these stored procedures?

A. The provider must grant the EXECUTE privilege on the application package and the consumer must create a local role that inherits privileges from the application.
B. No special actions are required. Consumers can execute any stored procedure within a Native App once the application is installed.
C. The provider must grant the EXECUTE MANAGED PROCEDURE privilege to the consumer's account and the consumer must be granted USAGE on the application package.
D. The provider must create a custom role within the application package with the EXECUTE privilege on the stored procedures, and the consumer must be granted authorization to assume that role.
E. The consumer must be granted the EXECUTE privilege on each stored procedure individually.

Answer: D

Explanation:
To ensure secure and controlled access, the provider should create a custom role within the application package, grant the EXECUTE privilege on the stored procedures to this role, and then use an authorization grant to allow the consumer to assume this role. This approach provides granular control and avoids granting broad privileges to the consumer's account directly.

NEW QUESTION # 19
A Native Application provider wants to grant the 'SELECT privilege on a view, 'CUSTOMER DATA, in a shared database 'SALES DATA DB' to consumers installing their application. The provider also wants to ensure that future views created in 'SALES DATA DB' are automatically accessible to the application. Which of the following SQL statements, executed by the provider, achieves this with the LEAST amount of privilege escalation risk?

Answer: C

Explanation:
Option A is the correct answer because it grants 'SELECT on FUTURE VIEWS and ' IMPORTED PRIVILEGES'. This allows the application to select data from existing and newly created views within the shared database without granting unnecessary privileges like ALL PRIVILEGES (D) or relying solely on explicitly granting privileges to individual views (C). Option B is incorrect as it does not cover future views. Option E only provides usage privileges on the database, but does not extend the ability to query any data residing in the database.

NEW QUESTION # 20
You are publishing a Snowflake Native Application to the Marketplace. You've completed initial testing, and the application appears to function as expected. However, the security scan consistently fails with a 'Data Exfiltration' error. The application includes a stored procedure that aggregates data from several tables within the application container and writes the results to an external stage using the 'COPY INTO' command. Review the following code snippet:

Which of the following changes is MOST likely to resolve the 'Data Exfiltration' error during the security scan?

A. Modify the stored procedure to only export data to a table within the application container instead of an external stage.
B. Encrypt the data written to the external stage using client-side encryption with a key managed by the application provider.
C. Require the consumer to explicitly grant the application usage privilege on a secure external stage controlled by the consumer, and modify the procedure to validate the stage's existence and permissions before exporting data.
D. Implement row-level security policies on the 'aggregated_data' table to restrict access to sensitive rows.
E. Remove the 'GRANT EXECUTE privilege on the 'export_data' procedure from the 'app_public' role.

Answer: C

Explanation:
The 'Data Exfiltration' error indicates a potential risk of unauthorized data leaving the consumer's Snowflake environment. The root cause is often that the application provider has unrestricted control over where the data is exported. The solution is to require the consumer to control the external stage and explicitly grant the application usage privilege on it. This ensures that the consumer is aware of and approves the data export. Option A would break the functionality. Option B addresses data access within the container but doesn't prevent exfiltration if the application can still write to an uncontrolled stage. Option D adds complexity but doesn't fundamentally address the control issue. Option E restricts functionality unnecessarily.

NEW QUESTION # 21
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