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Snowflake NAS-C01 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Snowflake Native App Framework Overview	20%	- Native application concepts and architecture 1. Application packages and structure 2. Manifest files and setup scripts
Topic 2: Deployment and Marketplace Publishing	25%	- Distribution and lifecycle management 1. Marketplace listings and publishing 2. Version upgrades and release management
Topic 3: Installation, Testing and Troubleshooting	20%	- Validation and debugging 1. Logging and event tables 2. Tracing and troubleshooting workflows
Topic 4: Native Application Design and Creation	35%	- Application development workflow 1. Building and versioning applications 2. Application roles and privileges

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Snowflake SnowPro Specialty - Native Apps Sample Questions (Q341-Q346):

NEW QUESTION # 341
You are the developer of a Snowflake Native Application. You've created a new version of your application package, v2.0. You want to perform a controlled rollout, first releasing it to a subset of your consumers for testing before making it generally available. Which sequence of steps, leveraging Snowflake's lifecycle management features, would you use to achieve this?

A. 1. Create a new APPLICATION role for beta testers. 2. Grant USAGE privilege on version v2.0 to the beta testers APPLICATION role. 3. Instruct beta testers to manually specify VERSION = 'v2.0' when creating their application instances.
B. 1. Create a new APPLICATION role for beta testers. 2. Grant USAGE privilege on version v2.0 to the beta testers APPLICATION role. 3. Update the default version of the application package to v2.0.
C. 1. Create a dedicated APPLICATION role for the application. 2. Grant OWNERSHIP on the application package to the application's APPLICATION role. 3. Update the default version of the application package to v2.0.
D. 1. Instruct consumers to use the 'ALTER APPLICATION' command to upgrade to v2.0. 2. Monitor consumer feedback on the upgraded version.
E. 1. Create a new APPLICATION role for beta testers. 2. Grant USAGE privilege on the application package to the beta testers APPLICATION role. 3. Grant USAGE privilege on version v2.0 to the beta testers APPLICATION role. 4. Update the default version of the application package to v2.0.

Answer: A

Explanation:
The correct answer is C because creating a dedicated role, granting usage on the specific version, and instructing beta testers to specify the version during application instance creation allows for controlled access to the new version. Option A and B would expose the new version after setting default version. Option D only grants ownership and does not control version access for consumers. Option E requires manual intervention from all consumers which defeats controlled rollout purpose.

NEW QUESTION # 342
You are developing a Snowflake Native Application that offers a data anonymization service to consumers using Snowpark Container Services. The service accepts a dataset from the consumer's Snowflake account, performs anonymization within the container, and then writes the anonymized data back to a new table in the consumer's account. Which of the following is a correct and secure combination of actions required to successfully achieve this data transfer, assuming the container is already built and pushed to Snowflake's registry? (Select all that apply)

A. The application package must contain a setup script that creates a new stage in the consumer's account to facilitate data transfer.
B. The container service must use Snowflake's internal API to authenticate and authorize access to the consumer's data using a database role assigned via entitlement.
C. The consumer must grant the USAGE privilege on the database containing the table to be anonymized to the application during installation.
D. The consumer must grant CREATE TABLE privilege on the database where the anonymized data should be stored to the application's service account via an entitlement.
E. The application package owner must grant the 'IMPORTED PRIVILEGES' privilege on the database containing the anonymization logic to the consumer's account before installation.

Answer: B,D

Explanation:
To enable data transfer from the consumer's account to the container service and back, several steps are crucial: C: Correct. The consumer needs to grant CREATE TABLE privilege using an entitlement, specifically to the service account associated with the Snowpark Container Service within the Native App, for the database where the anonymized data will be writtem This ensures the application can create the new table. E: Correct. Snowflake's internal APIs provide a secure and managed way for the container service to authenticate and authorize against the consumer's Snowflake account. Database roles and entitlements are key for managing these permissions. Roles are assigned to the container's service account, enabling it to perform actions with the necessary privileges. A: Incorrect . IMPORTED PRIVILEGES grant access to objects within the provider's (application developer) account, not objects within the consumer's account. B: Incorrect. While the consumer may grant USAGE on the database, this doesn't give specific access to the table. SELECT privileges would be required for the application to read the data from the specified table. D: Incorrect. Creating stages programmatically within the consumer's account is not a standard or recommended part of Native Apps. Stages are generally managed separately and access is granted via roles and privileges.

NEW QUESTION # 343
You are developing a Native App on Snowflake that needs to interact with an external REST API. To ensure proper security, you want to store the API key securely within the application package and use it for authentication. Which of the following is the MOST secure and RECOMMENDED method to accomplish this?

A. Store the API key in a table within the application database with minimal access control, relying on Snowflake's data encryption at rest.
B. Create a key-pair stored procedure. Storing the API key as a secret, then decrypting the key during each API call.
C. Hardcode the API key directly into the application code within a UDF (User-Defined Function).
D. Store the API key as a secret using Snowflake's Secret Management feature and reference it within a secure UDE
E. Store the API key in a secure stage with encryption and grant SELECT privilege to the application role.

Answer: D

Explanation:
Snowflake's Secret Management offers the most secure way to store and manage sensitive information like API keys. It allows you to store secrets securely and reference them within UDFs, preventing direct exposure. Options A, B and D introduce security risks by storing the API key in less secure ways or directly in code. Option E introduces unnessary complexity.

NEW QUESTION # 344
You are developing a Snowflake Native Application that allows consumers to schedule data transformations using a stored procedure.
This stored procedure needs to be able to access and update a configuration table within your application package, as well as read data from the consumer's tables. Which of the following approaches are valid and secure ways to grant the stored procedure the necessary privileges?

A. Grant the 'OWNERSHIP' privilege on the application package to the role executing the stored procedure. This provides the stored procedure with full control over all objects within the package.
B. Create a secure view that exposes only the necessary columns from the consumer's tables. Grant the stored procedure 'SELECT privilege on the secure view using the ' EXECUTE AS OWNER clause and the application role 'USAGE on the schema containing the stored procedure.
C. Use the 'EXECUTE AS CALLER clause when creating the stored procedure and grant the application role 'USAGE' on the schema containing the stored procedure. This allows the stored procedure to execute with the privileges of the user calling it.
D. Create a custom role within the application package with the necessary privileges to access the configuration table and the consumer's data. Grant this custom role to the stored procedure using the 'EXECUTE AS OWNER clause and the application role 'USAGE' on the schema containing the stored procedure.
E. Grant the application role 'SELECT' and 'UPDATE privileges directly on the configuration table within the application package and the consumer's tables. This allows the stored procedure to access and modify the data as needed using the ' EXECUTE AS OWNER clause.

Answer: B,D

Explanation:
Options C and D are correct. Using ' EXECUTE AS OWNER with a custom role that has limited privileges (to access config and use secure view) is a secure approach. Option B is incorrect because 'EXECUTE AS CALLER will use the calling user's privileges, but since the application is running on customer data, the calling user's privileges have no role to play. Option A is not good because giving complete ownership is discouraged for security reason. Option E is discouraged as its best to not directly access consumer tables and use a secure view instead.

NEW QUESTION # 345
You are developing a Snowflake Native Application that provides data enrichment services. A consumer reports that a specific query against a view, 'ENRICHED DATA, occasionally returns incorrect results. You suspect a race condition in the underlying stored procedure that populates a temporary table used by the view. Which of the following strategies would be MOST effective in diagnosing and resolving this issue within the application ?

A. Isolate the portion of the stored procedure that writes to the temporary table into a separate stored procedure with 'EXECUTE AS CALLER privileges.
B. Implement logging within the stored procedure to capture the execution flow and intermediate data values. Use 'SYSTEM$GET PREDECESSORS to track dependencies. Analyze the logs to identify the race condition. Use a session table rather than a temp table.
C. Replace the temporary table with a permanent table with appropriate locking mechanisms to prevent concurrent modifications. Consumers will need to be notified of a minor version update.
D. Implement a retry mechanism with exponential backoff in the stored procedure to handle potential concurrency issues when writing to the temporary table.
E. Use Snowflake's 'GET_DDL' function to retrieve the SQL definition of the consumer's query and analyze it for potential errors.

Answer: B,D

Explanation:
Options A and D are correct. A retry mechanism can mitigate concurrency issues. Logging helps diagnose the race condition. Option B introduces a permanent table, which changes the app's architecture and might have unintended side effects. Option C examines the consumer's query, but the issue is within the provider's application. Option E is unlikely to resolve the race condition and can introduce security concerns. A session table ensures isolation and mitigates concurrency problems.

NEW QUESTION # 346
......

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