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Snowflake NAS-C01 Exam Syllabus Topics:

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

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Snowflake SnowPro Specialty - Native Apps Sample Questions (Q205-Q210):

NEW QUESTION # 205
A Snowflake Native App provider wants to implement row-level security (RLS) in an event table to ensure that consumers only receive events pertaining to their specific organization, even if they have been granted USAGE on the event table function. How can this be achieved?

A. Row-level security cannot be enforced on event tables shared through Snowflake Native Apps due to security limitations.
B. Implement a custom stored procedure that acts as a proxy for accessing the event table, filtering data based on the consumer's user ID.
C. Create a masking policy that filters rows in the event table based on the CURRENT_ACCOUNT() function to match the consumer's account ID.
D. Create a row access policy that filters rows in the event table based on the APP_INSTANCE_ID() function, ensuring each consumer only sees events related to their application instance.
E. Create a view on top of the event table that includes a WHERE clause filtering by APP INSTANCE ID() and grant access to the view instead of the base table.

Answer: D

Explanation:
B is the most appropriate answer. Row access policies can leverage APP_INSTANCE_ID() within the Snowflake Native App environment to filter data based on the application instance, achieving the desired row-level security. A is incorrect because CURRENT_ACCOUNT() would not distinguish between different application instances within the same account. C is incorrect as it is more complex than using row access policy directly and more difficult to maintain. D is similar to B but less secure than the row access policy. E is incorrect, RLS can be enforced.

NEW QUESTION # 206
You are managing a Snowflake Marketplace listing for your native application. You need to update the application logic and schem a. Which of the following actions is the correct sequence to perform the update in a non-breaking way for existing consumers?

A. Create a patch version with bug fixes and create a new minor version with schema changes, and release it as an upgrade on the Marketplace.
B. Modify the existing application's code and schema, create a new listing for the updated version, and remove the old listing.
C. Create a new version of the application with the updated logic and schema, test it thoroughly, and then release it as an upgrade on the Marketplace.
D. Directly modify the application's code and schema in the production environment, then announce the changes to consumers.
E. Deprecate the existing version of the application and force all consumers to upgrade to the new version within 24 hours.

Answer: C

Explanation:
The correct approach is to create a new version of the application with the updated logic and schema. This allows for thorough testing before releasing the update to consumers, minimizing disruption and ensuring compatibility. A and C are disruptive, D creates confusion, and while E is partly correct in terms of versions and patching is not a direct answer.

NEW QUESTION # 207
You are tasked with deploying a new version of your Snowflake Native Application. The new version introduces significant schema changes to the data warehouse used by the application. What steps should you take during the deployment process to ensure a smooth transition and minimize downtime?

A. Use Snowflake's zero-copy cloning feature to create a copy of the existing database. Apply the schema changes to the cloned database, test thoroughly, and then promote the cloned database to production.
B. Notify all users that the application will be unavailable for several hours while the schema changes are applied directly to the production environment.
C. Modify the existing tables in place to reflect the new schema. Update your application's code to be compatible with the new schema after the changes are complete.
D. Deploy the new version as a staging version alongside the existing version. Implement data migration scripts to gradually move data to the new schema, and then switch the production traffic to the new version.
E. Immediately replace the existing application version with the new version. Snowflake will automatically handle any schema compatibility issues.

Answer: A,D

Explanation:
Options B and D are both valid approaches for deploying a new version with schema changes. Option B provides a controlled and gradual migration to the new schema. Option D leverages Snowflake's cloning capabilities to minimize downtime and provide a rollback option. Option A assumes automatic handling of schema changes, which is not correct. Option C results in significant downtime. Option E is risky and can lead to data inconsistencies and application errors if not handled carefully and incrementally. Promoting the clone to production is preferable to modifying in place.

NEW QUESTION # 208
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 as a secret using Snowflake's Secret Management feature and reference it within a secure UDE
B. Store the API key in a secure stage with encryption and grant SELECT privilege to the application role.
C. Create a key-pair stored procedure. Storing the API key as a secret, then decrypting the key during each API call.
D. Hardcode the API key directly into the application code within a UDF (User-Defined Function).
E. Store the API key in a table within the application database with minimal access control, relying on Snowflake's data encryption at rest.

Answer: A

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 # 209
You are developing a Snowflake Native Application for a data enrichment service and plan to list it on the Snowflake Marketplace. You want to control the costs incurred by consumers of your application while maximizing its accessibility. Which of the following strategies represent Snowflake Marketplace best practices for cost management and pricing?

A. Refrain from providing any cost-related information upfront to encourage broader adoption, deferring cost discussions until after installation and usage.
B. Implement a tiered pricing model based on data volume processed, compute resources consumed, or number of users accessing the application. Offer a free basic tier with limited functionality.
C. Offer a free trial period with limited functionality to allow potential consumers to evaluate the application before committing to a paid subscription.
D. Use Snowflake's built-in resource monitors to proactively track application consumption and alert consumers when they approach predefined spending limits.
E. Provide detailed cost estimation documentation outlining the expected costs for different usage scenarios and data volumes.

Answer: B,C,D,E

Explanation:
Offering a free trial (A) allows users to evaluate. Tiered pricing (B) offers flexibility and accommodates different budgets. Providing cost estimation documentation (C) is transparent and helps users plan. Using resource monitors for alerts (E) enables proactive cost control. Hiding cost information (D) is not a best practice and can lead to negative user experiences and discourage adoption.

NEW QUESTION # 210
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