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Snowflake NAS-C01 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Snowflake Native Applications Design and Creation	35%	- Apply Snowflake best practices while building native application workloads 1. Build, distribute, and monetize apps in Snowflake 2. Design scalable applications - Create and manage billing events and cost monitoring techniques 1. Formulate Snowflake native application workflows and procedures
Topic 2: Snowflake Native Applications Installation and Testing	20%	- Install and test native applications 1. Validate application functionality and performance
Topic 3: Snowflake Native App Framework Overview	20%	- Understand Snowflake architecture, features, tools, and best practices 1. Cloud-based computing and storage concepts 2. Account security and access management 3. Data sharing and protection mechanisms
Topic 4: Snowflake Native Applications Deployment	25%	- Build, version, and release native applications 1. Use Snowflake's marketplace 2. Use data sharing for app interoperability

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Snowflake SnowPro Specialty - Native Apps Sample Questions (Q139-Q144):

NEW QUESTION # 139
An application developer is creating a Snowflake Native App that uses a user-defined function (UDF) 'MY UDF' in 'APP SCHEMA' The UDF reads data from a table 'APP TABLE' which is also in "APP SCHEMA'. The application role is 'APP ROLE'. Which of the following 'GRANT' statements are necessary for the application to function correctly within the provider account , assuming the UDF is defined with 'VOLATILE' behavior and is using the caller's rights (i.e., 'EXECUTE AS CALLER)?

Answer: C

Explanation:
The SAPP ROLE' needs 'USAGE' on the database and schema, 'EXECUTE' on the UDF, and 'SELECT on the table the UDF reads from because the UDF executes as the caller and the application needs those permissions within the provider account. 'OWNERSHIP' and 'ALL PRIVILEGES are not necessary, and generally bad practice for least-privilege security.

NEW QUESTION # 140
A Snowflake Native App installed in a consumer account needs to access data in a specific table within the consumer's account to perform its core functionality. Which of the following is the MOST secure and recommended way for the application to gain access to this data? (Assume the application developer does not have direct access to the consumer's Snowflake account.)

A. The consumer shares the table directly with the application provider's Snowflake account.
B. The consumer grants the "GLOBAL' privilege 'SELECT on the table directly to the application package name.
C. The consumer creates a secure view on top of the table and grants 'SELECT privilege on the secure view to the application's installed application object (application instance).
D. The application provider requests the 'IMPORTED PRIVILEGES on the consumer account, allowing the application to access any object within the account.
E. The application prompts the consumer for their Snowflake account credentials and uses those credentials to access the data.

Answer: C

Explanation:
The MOST secure approach is to create a secure view on top of the table and grant 'SELECT privilege on the secure view to the installed application. This limits the application's access to only the data exposed by the view, minimizing the potential security risk. Granting access directly to the application package (option A) is not supported. Requesting 'IMPORTED PRIVILEGES (option B) is too broad and insecure. Sharing the table with the provider (option D) is not necessary and adds complexity. Asking for credentials (option E) is a major security violation. Secure Views prevent direct access to underlying tables while still allowing applications to function as intended.

NEW QUESTION # 141
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 # 142
You are packaging a Snowflake Native Application for distribution. You need to include a Python User-Defined Function (UDF) that reads data from a stage. Which of the following steps are REQUIRED to ensure the UDF functions correctly after installation in a consumer's account? (Choose two)

A. Include the Python code for the UDF inline within the 'CREATE FUNCTION' statement, instead of referencing an external stage.
B. Explicitly grant 'USAGE privilege on the stage to each role within the application that will execute the UDF in the 'setup.sqr script.
C. Ensure the stage containing the Python file is explicitly referenced with 'OWNER' rights in the application manifest file.
D. Grant on the stage and 'USAGE' on the database and schema containing the stage to the 'SNOWFLAKCORE.BUILTIN APP API' schema in the provider account before building the application package.
E. Grant the 'READ privilege on the stage to the schema in the provider account before building the application package.

Answer: B,D

Explanation:
To allow the UDF to read the data from the stage in the consumer account, the schema in the provider account (used for building the application package) must be granted 'READ' on the stage and 'USAGE' on the database and schema containing the stage. Furthermore, you need to explicitly grant "USAGE privilege on the stage to each role within the application that will execute the UDF in the 'setup.sqr script after the app has been installed in the consumer account. Including the Python code inline negates the purpose of using a stage. OWNER rights on the stage are not necessary and potentially insecure.

NEW QUESTION # 143
You're developing a Snowflake Native Application with a front-end UI built using Streamlit, deployed as a UDF. This UI allows users to upload CSV files for processing. To adhere to security best practices and prevent unacceptable code practices in a Native App, what considerations should you prioritize in your development and deployment process specifically related to handling user-uploaded files ?

A. Implement strict file size limits and file type validation on both the client-side (Streamlit UI) and server-side (Snowflake UDF) to prevent denial-of-service attacks and malicious file uploads. Sanitize and validate the contents of the uploaded CSV file, escaping special characters and preventing SQL injection vulnerabilities if data from the CSV is used in SQL queries.
B. Store the uploaded CSV files directly within a Snowflake table without any validation to ensure high performance and minimal overhead.
C. Assume that all uploaded files are safe and trustworthy, and directly process them without any security checks.
D. Disable any logging or auditing of file upload activity to protect user privacy and avoid unnecessary data storage.
E. Allow user to execute scripts or upload executable file as part of CSV content

Answer: A

Explanation:
Option A is the most secure approach. It emphasizes both client-side and server-side validation to prevent malicious uploads. Storing files directly without validation (B) is highly insecure. Disabling logging (C) hinders auditing and incident response. Assuming files are safe (D) is a critical security flaw. Option E is very dangerous from security perscpective, it should not be allowed.

NEW QUESTION # 144
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