NAS-C01 Practice Exam Fee, Exam NAS-C01 Objectives

Snowflake Certified professionals are often more sought after than their non-certified counterparts and are more likely to earn higher salaries and promotions. Moreover, cracking the SnowPro Specialty - Native Apps (NAS-C01) exam helps to ensure that you stay up to date with the latest trends and developments in the industry, making you more valuable assets to your organization.

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. Application roles and privileges 2. Building and versioning applications
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 (Q245-Q250):

NEW QUESTION # 245
You are designing a Snowflake Native App that includes a Streamlit I-Jl. The Streamlit app needs to access data stored in a secure table within the consumer's account. What are the recommended and MOST secure methods for granting the Streamlit app access to this data, considering the principle of least privilege? Select all that apply.

A. Grant *SELECT privilege directly on the table to the application role.
B. Create a secure view on top of the table and grant 'SELECT privilege on the view to the application role. Publish the View via 'show published objects in application package'.
C. Create an external function that retrieves the data and grant 'USAGE on the external function to the application role.
D. Grant the ' IMPORTED PRIVILEGES' privilege on the database containing the table to the application role.

Answer: B,D

Explanation:
Granting 'IMPORTED PRIVILEGES (A) on the database allows the application to inherit privileges defined within the consumer's account, following the principle of least privilege. Creating a secure view (C) and granting SELECT on the view to the application role provides a controlled interface to the data. Directly granting SELECT on the table (B) is less secure, as it grants direct access. External functions (D) introduce unnecessary complexity and potential security risks. Granting 'ACCOUNTADMIW (E) is a significant security violation and should never be done.

NEW QUESTION # 246
You are designing a Snowflake Native Application that requires fine-grained access control to its data within the consumer account. You want to ensure that consumers can only access data relevant to their specific department. Which of the following Snowflake features, when combined, offer the MOST secure and flexible solution for implementing this requirement within the context of a Snowflake Native Application ?

A. Views and Stored Procedures with Caller's Rights.
B. Dynamic Data Masking policies and Views with Caller's Rights.
C. External Tables and Secure Views with Owner's Rights.
D. Row Access Policies and Secure Views with Caller's Rights.
E. User-Defined Functions (UDFs) and Row Access Policies.

Answer: D

Explanation:
The best combination is Row Access Policies and Secure Views with Caller's Rights. Row Access Policies: Allow you to filter data based on the user accessing it, ensuring they only see data relevant to their department. Policies are applied to tables. Secure Views with Caller's Rights: Allow you to encapsulate the data access logic, ensuring that the row access policies are always enforced, and that consumers cannot bypass them. Caller's rights are essential here, as the access control decisions need to be made based on who is using the view. The other options are less suitable: A: Views and Stored Procedures can enforce access, but without Row Access Policies, they're less secure. B: UDFs can manipulate data but don't inherently enforce row-level security like Row Access Policies. C: External Tables are for data outside Snowflake; Owner's Rights are less secure than Caller's Rights in this scenario. E: Dynamic Data Masking hides data, it doesn't filter it, so it won't restrict access to specific rows.

NEW QUESTION # 247
You are developing a Snowflake Native App that needs to perform asynchronous tasks in the consumer's account. Which of the following approaches is the MOST suitable and secure way to achieve this, ensuring minimal impact on the consumer's resources and maintaining data integrity?

A. The Native App can create task and warehouse in the consumer account to execute the code using CREATE APPLICATION command. The application uses SNOWFLAKE.CORE.AUTHZ.PASS PRIVILEGES() to execute these tasks.
B. Create a Snowflake Task that is executed within the consumer's account, triggered by events within the application, and configured to run on a Snowflake-managed compute pool.
C. Implement a scheduled stored procedure that polls for new tasks every minute and processes them, potentially consuming significant compute resources in the consumer's account. The stored procedure is deployed in the consumer's account using CREATE APPLICATION.
D. Utilize an external message queue (e.g., AWS SQS, Azure Queue Storage) to offload asynchronous tasks, requiring the consumer to configure network policies to allow egress traffic to the queue.
E. Implement a Snowpark UDF that starts a new thread to handle the asynchronous task within the consumer's compute environment.

Answer: B

Explanation:
Using Snowflake Tasks (Option A) is the recommended approach for asynchronous task execution within a Snowflake Native App. The task is managed within the consumer's account but still deployed as part of app package, avoiding the need for external dependencies or extensive consumer configuration. Option B introduces complexity and security concerns with external message queues. Option C can be resource-intensive and inefficient. Option D is incorrect as apps are not allowed to create warehouses. Option E is not supported, UDFs do not run in separate threads.

NEW QUESTION # 248
When designing the architecture of a Snowflake Native App, which of the following architectural considerations and trade-offs should you carefully evaluate to optimize performance, security, and cost-effectiveness? (Select all that apply)

A. Storing all application data within the provider account and accessing it directly from the consumer account using data sharing to avoid data duplication.
B. Using secured API integration to call the external APIs to get real time details in the app to make the app more useful.
C. Implementing robust error handling and logging mechanisms to facilitate debugging and monitoring of the application's behavior in both the provider and consumer environments.
D. Choosing the appropriate data access model (e.g., UDFs, stored procedures, Snowpark) based on the specific use case and performance requirements, considering the overhead associated with each approach.
E. Minimizing data transfer between the provider and consumer accounts by leveraging Snowpark and UDFs for data processing within the consumer's environment.

Answer: C,D,E

Explanation:
Options A, D, and E are crucial for optimal Snowflake Native App design. Minimizing data transfer (A) reduces costs and improves performance. Robust error handling and logging (D) are essential for debugging and monitoring. Choosing the correct data access model (E) is a key performance factor. Option B is incorrect because storing all data in the provider account and sharing to the consumer introduces unnecessary dependencies and potential security risks. Consumers also need to pay for querying your shared data. Option C is not always desirable, since calling external API every time would be too expensive.

NEW QUESTION # 249
Consider the following 'manifest.yml' file for a Snowflake Native App:

A. The application version will default to '0.1.0' and the application can be installed successfully by any consumer account.
B. The application version will be automatically assigned by Snowflake during the installation process on the consumer side.
C. The application will fail to install because no 'privileges' are listed in the manifest file. All applications must declare the necessary privileges.
D. The application version will default to '0.0.1'. If the application includes a view, then the view needs access to the user data and must have a privilege declared to allow users to view data from the application.
E. The application will fail to install because the version property is missing. Each version must explicitly be specified in the manifest file.

Answer: E

Explanation:
A valid version is mandatory in 'manifest.yml' to install native apps. When version is missing, the installation will fail.

NEW QUESTION # 250
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