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Snowflake NAS-C01 Exam Syllabus Topics:

Section	Weight	Objectives
Installation, Testing and Troubleshooting	20%	- Validation and debugging 1. Logging and event tables 2. Tracing and troubleshooting workflows
Native Application Design and Creation	35%	- Application development workflow 1. Building and versioning applications 2. Application roles and privileges
Snowflake Native App Framework Overview	20%	- Native application concepts and architecture 1. Application packages and structure 2. Manifest files and setup scripts
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 (Q346-Q351):

NEW QUESTION # 346
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. 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.
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. 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.
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 # 347
You are developing a Snowflake Native App that processes streaming data from a Kafka topic. The app needs to continuously ingest data, perform real-time transformations, and store the results in a Snowflake table within the app's managed database. Which Snowflake feature(s) and approach(es) are BEST suited for implementing this data ingestion and processing pipeline within the Native App?

A. Implement a custom Kafka consumer within a Java User-Defined Function (UDF) to read data from the Kafka topic and directly insert it into the target table.
B. Employ a combination of Snowflake Snowpipe Streaming for data ingestion and Dynamic Tables for continuous, incremental data transformations within the application's managed database.
C. Use Snowflake Pipes to continuously ingest data from the Kafka topic into a staging table and then use stored procedures to periodically transform and load the data into the target table.
D. Use a Snowflake Stream to capture changes in the Kafka topic and then use a Snowflake Task to periodically merge these changes into the target table.
E. Leverage Snowflake Snowpipe Streaming to ingest data directly from the Kafka topic into the target table, combined with Snowflake Tasks to handle any required data transformations.

Answer: B

Explanation:
Snowpipe Streaming offers the lowest latency and near real-time data ingestion capabilities. Dynamic Tables provide a declarative and managed way to perform continuous data transformations, making them ideal for processing streaming data within a Snowflake Native App. Options A, B, and C are less suitable for high-velocity streaming data due to latency and complexity concerns. Streams are for tracking changes within Snowflake tables, not external Kafka topics.

NEW QUESTION # 348
You are developing a Snowflake Native Application and want to implement a usage-based pricing model. Your application writes usage data to a table 'APPLICATION USAGE' in the provider account. You need to create a listing on the Snowflake Marketplace that charges customers based on the number of processed records. Which of the following steps are crucial to correctly setting up the pricing plan within the listing, ensuring that usage data is properly captured and reflected in the customer's bill?

A. Establish a Data Exchange between the provider and consumer accounts, sharing the 'APPLICATION_USAGE' table directly. The listing then references this Data Exchange for pricing.
B. Define a usage-based price metric within the listing that directly queries the 'APPLICATION_USAGE table in the consumer account using a secure view.
C. Create a stored procedure in the provider account that aggregates the usage data in 'APPLICATION USAGE' , and then configure the listing to execute this stored procedure at regular intervals to calculate charges.
D. Configure a usage-based price metric within the listing, pointing it to a secure view created on top of the 'APPLICATION_USAGE' table, explicitly granted to the 'snowflake' account. The secure view should aggregate usage data.
E. Define a resource monitor on the provider account that tracks resource consumption of the application, and use this as the basis for pricing. This requires no customer interaction.

Answer: D

Explanation:
The correct answer is C. A usage-based price metric must point to a secure view that aggregates usage data from the 'APPLICATION_USAGE table. The secure view ensures that data access is controlled and that consumers only see the aggregated usage information required for billing. Option A is partially correct, but misses explicitly granting access to snowflake account, vital for pricing. Other options are incorrect because they either expose raw data (D), rely on procedures which are hard to manage within the marketplace (B), try to query consumer data which is impossible using provider side secure view (A) or irrelevant to usage based pricing (E).

NEW QUESTION # 349
You are managing a Snowflake Native Application that provides data enrichment services. Over time, you've accumulated several application package versions: v1 .0 (initial release), v1.1 (bug fixes), v2.0 (new features and schema changes), and v2.1 (performance improvements for v2.0). Some consumers are still using v1 .0, while others have upgraded to v2.1. You need to retire v1.0 to reduce maintenance overhead. Which of the following actions and considerations are MOST important when deprecating vl .0? Select TWO that apply.

A. Immediately drop version v1.0 from the application package to free up storage space.
B. Identify consumers still using v1.0. Communicate the deprecation timeline and provide clear instructions on how to upgrade to a supported version. Offer support during the transition.
C. Automatically migrate all consumers still using v1.0 to the latest version (v2.1 ) without their consent to simplify management.
D. Update the application's metadata in the Snowflake Marketplace to indicate that v1.0 is no longer supported.
E. Keep v1.0 indefinitely to ensure compatibility with all existing application instances, regardless of usage.

Answer: B,D

Explanation:
Options B and C are the most crucial. It's vital to communicate with consumers still using v1.0, providing ample notice and support for upgrading. Updating the Marketplace listing accurately reflects the application's supported versions. Option A without considering user base is not optimal. Option D forcing upgrades could lead to data loss if the user doesn't plan to upgrade. Option E is not practical to keep legacy versions forever. The optimal approach involves providing ample notice, migration support, and updating the application listing.

NEW QUESTION # 350
You are developing a Snowflake Native Application designed to be deployed by various consumers from the Snowflake Marketplace. The application interacts with user-provided data through secure UDFs and external functions. To ensure minimal impact and prevent unintended data access, how should you configure the application's security context and privileges when creating the application package?

A. Create a separate application role with minimal privileges, and grant only 'USAGES on the database and 'EXECUTE' on the relevant functions to that role. Use 'CALL to grant USAGE on the share.
B. Use the 'CALL APPLICATION.API GRANT PRIVILEGE command, and grant only the 'USAGE privilege on the shared database containing consumer data, along with the ' EXECUTE privilege on the UDFs and external functions.
C. Grant OWNERSHIP privilege on all schemas and tables to the application's service account.
D. Define roles within the application and grant 'USAGE' on all schemas and 'SELECT on all tables to these roles.
E. Grant 'ALL PRIVILEGES on the database containing consumer data to the application role.

Answer: A

Explanation:
The best practice for securing Native Applications is to follow the principle of least privilege. Granting 'OWNERSHIP' or 'ALL PRIVILEGES' (A, D) is far too permissive and poses a significant security risk. While creating roles within the application (C) offers some control, it doesn't leverage the explicit privilege granting mechanism designed for Native Apps. Option B is partially correct but incomplete. Option E is the most secure and correct approach. It uses a dedicated application role with minimal required privileges CUSAGE on database, 'EXECUTE on UDFs/external functions) and 'CALL to grant 'USAGE' on the data share provided by the consumer, ensuring that the application can only access the explicitly shared data and execute the intended functions.

NEW QUESTION # 351
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