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Snowflake NAS-C01 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Application Deployment & Distribution	25%	- Publishing to Snowflake Marketplace - Listing types and monetization - Upgrades and lifecycle management - Versioning and release management
Topic 2: Advanced Features & Management	20%	- Integration with Snowpark and external services - Event logging and telemetry - Governance and compliance - Billing events and cost monitoring
Topic 3: Application Design & Creation	35%	- Setup scripts and application logic - Security and access control - Application packages and objects - Manifest files and configuration - Native App Framework architecture
Topic 4: Application Installation & Testing	20%	- Provider and consumer workflows - Testing strategies and validation - Installation procedures and dependencies - Debugging and troubleshooting

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Snowflake SnowPro Specialty - Native Apps Sample Questions (Q143-Q148):

NEW QUESTION # 143
You are developing a Snowflake Native Application that includes a Streamlit UI. The application needs to read configuration parameters such as API keys and database connection strings. Which of the following methods are the recommended and secure ways to manage these configuration parameters within a Snowflake Native App?

A. Store the configuration parameters in a dedicated table within the Snowflake managed database and read them using SQL queries from the Streamlit application. Grant appropriate privileges to the Streamlit application's role on this table.
B. Store the configuration parameters directly within the Streamlit code as Python variables.
C. Store configuration parameters in an external file (e.g., a JSON or YAML file) and include it in the application's deployment package. Read the file from the Streamlit application.
D. Store the configuration parameters as environment variables within the Snowflake environment where the Streamlit application is running.
E. Use Streamlit secrets Cst.secretS) configured within the Streamlit application's settings in Snowflake. Store sensitive information like API keys and database credentials there.

Answer: A,E

Explanation:
Options B and C are the recommended methods. Using Streamlit secrets Cst.secretS) allows secure storage of sensitive information within the Snowflake environment. Storing the configuration parameters in a dedicated table within the Snowflake managed database with appropriate permissions is another secure and controllable method. Storing directly in code (A) or external files (E) poses security risks. Environment variables (D), while sometimes used, are less manageable and secure in this specific Snowflake Native App context. Option B offers greater control over who can read the config data through role based access control. Option C allows separation of code and configuration without putting parameters in a table that can accidentally be queried and seen.

NEW QUESTION # 144
You are developing a Snowflake Native Application that uses Streamlit to provide a user interface for data analysts. The application accesses sensitive customer data residing in a managed database. To enhance security, you want to implement row-level security (RLS) based on the user's role. You have the following Streamlit code snippet:

Which of the following actions should you take to implement RLS in the Snowflake Native App, ensuring only authorized users can view specific rows of 'customer_data'? Assume the already contains necessary credentials. Choose the most secure and efficient method.

A. Implement RLS directly within the Streamlit application by filtering the 'data' DataFrame based on the user's role before displaying it using 'st.dataframe'. Store user roles in a separate table and fetch them using a different database connection.
B. Use Snowflake's masking policies combined with a secure view. The masking policy reveals data based on the user's role. Grant the Streamlit application's role access to the secure view.
C. Modify the SQL query within the 'get_data' function to include a 'WHERE clause that filters data based on the current Streamlit user's username obtained using 'st.session_state.user.username' .
D. Implement a custom Python decorator that checks user roles before executing the 'get_data' function. Raise an exception if the user lacks the necessary role.
E. Create a secure view in Snowflake that implements RLS based on the role of the user executing the query. Grant the Streamlit user access to this view instead of the base table, and modify the 'get_data' function to query the view.

Answer: B

Explanation:
Using Snowflake's masking policies and secure views is the most secure and efficient method. It centralizes RLS within Snowflake, leveraging its security features. Option A is vulnerable to SQL injection if 'st.session_state.user.username' is not properly sanitized. Option B is better, but masking policies provide more granular control and data obfuscation. Option C pushes security logic to the application layer, which is less secure. Option E adds unnecessary complexity and overhead.

NEW QUESTION # 145
You've deployed a Snowflake Native Application to the Marketplace. A consumer reports an issue, and after investigating, you suspect a vulnerability related to SQL injection within a stored procedure. You want to implement best practices to mitigate this risk. Which of the following strategies are recommended to secure the stored procedure against SQL injection?

A. Disable all external network access from within the stored procedure environment.
B. Encode all user input before inserting it into SQL queries to neutralize potentially harmful characters.
C. Use parameterized queries or prepared statements whenever possible to prevent user input from being directly interpreted as SQL code.
D. Grant 'OWNERSHIP' privilege to the stored procedure to prevent unauthorized modifications.
E. Implement strict input validation and sanitization to ensure that user input conforms to expected data types and patterns.

Answer: B,C,E

Explanation:
SQL injection vulnerabilities arise when user input is incorrectly incorporated into SQL queries. Parameterized queries (A) and input validation/sanitization (B) are crucial defenses. Parameterized queries treat input as data, not code, preventing injection. Input validation ensures only expected data reaches the query. Encoding user input (D) neutralizes harmful characters that could be exploited. Granting 'OWNERSHIP' (C) is for access control, not injection prevention. Disabling network access (E) might improve overall security but doesn't directly address SQL injection within the procedure.

NEW QUESTION # 146
You are developing a Streamlit application within a Snowflake Native App that needs to access a custom Python module ('my_module.py') containing utility functions. The module resides in the same stage as your Streamlit application code. How would you ensure that the Streamlit application can correctly import and use this module?

A. Modify the ' PYTHONPATHS environment variable within the Snowflake environment to include the stage where 'my_module.py' is located.
B. Place 'my_module.py' in the same directory as your main Streamlit application file. Snowflake automatically includes all files in the same directory when deploying the application.
C. Use the method in your Streamlit application code to add the stage location to the Python module search path before importing my_module' .
D. Use the function to dynamically load 'my_module.py' directly from the stage, specifying the full stage path.
E. Include in a 'requirements.txt' file and use 'pip install -r requirements.txt' within the Streamlit application's entrypoint script.

Answer: C

Explanation:
The correct approach is to use 'sys.path.append()' (Option C) to add the stage location to the Python module search path. Snowflake Native Apps do not automatically include all files in the same directory (A), and modifying 'PYTHONPATH' (B) or using 'requirements.txt' and 'pip' (D) are not supported or necessary in this context. (E) could work but is unnecessarily complex compared to 'sys.path.append()' for modules within the same deployment package.

NEW QUESTION # 147
You are responsible for managing the pricing plans for your Snowflake Native Application listed on the Marketplace. You want to offer a 'Premium' tier that includes additional features and resources. To achieve this, you need to modify the listing to include this new pricing option. Which of the following steps are NECESSARY and in the CORRECT order to successfully add the 'Premium' tier to your application's listing, ensuring existing customers are not negatively impacted? (Choose two options in their proper order)

A. 1. Update the listing on the Marketplace with the new pricing tier. 2. Ensure backward compatibility for existing customers by implementing logic in the application to detect their current tier and maintain existing functionality.
B. 1. Update the Marketplace listing by adding the 'Premium' pricing tier with appropriate settings, but without modifying the application package. 2. Inform existing customers that the new pricing tier is available.
C. 1. Create a new version of the application package in your provider account with the code changes supporting the 'Premium' features. 2. Update the Marketplace listing with the new version of the application and add the 'Premium' pricing tier with appropriate settings.
D. 1. Modify the existing application package in place to include the code changes supporting the 'Premium' features. 2. Update the Marketplace listing with the modified application and add the 'Premium' pricing tier with appropriate settings.
E. 1. Test new Pricing in a Sandbox environment with few consumers. 2. Deploy the new version to the consumer accounts.

Answer: A,C

Explanation:
The correct answer is A then E. First, a new version of the application package (A) is created with the code changes to support the 'Premium' features. Then, the Marketplace listing is updated with the new version and the 'Premium' pricing tier. It's also important to ensure backward compatibility for existing customers (E) so their experience is not negatively affected after the update. Option B is incorrect because modifying the existing application package in place can cause issues for existing installations. Option C is incorrect because you must implement the new features. Option D is relevant but it's not what the question is asking for and it is not a comprehensive answer.

NEW QUESTION # 148
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