NAS-C01 Practice Materials: SnowPro Specialty - Native Apps and NAS-C01 Study Guide - Pass4SureQuiz

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Snowflake NAS-C01 Exam Syllabus Topics:

Section	Weight	Objectives
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
Application Installation & Testing	20%	- Provider and consumer workflows - Debugging and troubleshooting - Testing strategies and validation - Installation procedures and dependencies
Application Deployment & Distribution	25%	- Upgrades and lifecycle management - Versioning and release management - Listing types and monetization - Publishing to Snowflake Marketplace
Advanced Features & Management	20%	- Event logging and telemetry - Integration with Snowpark and external services - Billing events and cost monitoring - Governance and compliance

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Snowflake SnowPro Specialty - Native Apps Sample Questions (Q162-Q167):

NEW QUESTION # 162
You are developing a Snowflake Native Application that utilizes Snowpark Container Services (SPCS). Your application requires a Compute Pool configured with autoscaling capabilities to handle fluctuating workloads. However, you want to minimize costs when the application is idle. Which of the following considerations are MOST important when defining the 'MIN NODES' and 'MAX NODES' parameters for your Compute Pool, along with the 'AUTO RESUME setting?

A. Compute Pool autoscaling is managed entirely by the underlying container orchestration system and Snowflake only provides basic resource allocation. The 'MIN NODES' and 'MAX NODES parameters are advisory only.
B. The optimal configuration depends on the balance between cost and performance. A higher 'MIN_NODES' value provides faster initial response times but incurs higher costs when idle. 'AUTO RESUME should be set to TRUE if you want the pool to automatically restart based on incoming requests.
C. The 'AUTO_RESUME parameter is irrelevant as the compute pool automatically scales based on current workload. should be set to the expected average workload.
D. Setting to 0 allows the Compute Pool to scale down completely when idle, eliminating costs. 'AUTO_RESUME should be set to TRUE to automatically start the pool when a new request is received.
E. Setting to a non-zero value ensures that some resources are always available, leading to faster response times for initial requests. 'AUTO RESUME' should be set to FALSE to prevent unnecessary resource usage.

Answer: B,D

Explanation:
Setting to 0 allows the pool to scale down completely, saving costs when idle. 'AUTO_RESUME' is crucial for automatically restarting the pool when needed. The optimal balance depends on specific application needs; a higher 'MIN NODES' improves initial response time but increases idle costs. Therefore, understanding this trade-off is crucial. AUTO RESUME is important for native application. MIN_NODES controls costs and response time.

NEW QUESTION # 163
Consider the following snippet from a Snowflake Native App manifest file (application.yaml):

Which of the following statements are TRUE regarding how these parameters can be accessed and used within the application's SQL code?

A. Option A
B. Option D
C. Option B
D. Option E
E. Option C

Answer: C,E

Explanation:
Snowflake Native Apps use 'SYSTEM$GET PARAMETER to access parameter values defined in the manifest. This function retrieves the current value of the parameter, which can be either the default value defined in the manifest or a value overridden by the app package consumer during installation. Thus C is also correct. Direct variable access (A) is incorrect and Parameters are not restricted only to manifest file. They are accessible at runtime. So D and E are also incorrect

NEW QUESTION # 164
Within a Snowflake Native Application, you need to implement a feature that is only available in the latest version of the application, and the usage of that feature needs to be tracked. How would you accomplish this within the application code, considering that you want to avoid exposing internal details about version numbers directly to the consumer?

A. Create a separate role that is only granted to users of the latest version, and use this role to control access to the feature. Use a view to abstract the role requirement.
B. Use Snowflake's Resource Monitors to track resource usage by different versions of the application.
C. Implement a UDF (User-Defined Function) that checks the application version and returns a flag indicating whether the feature is available. Use this flag in SQL queries to conditionally enable the feature and track its usage.
D. Use the 'APPLICATION$VERSION' function within a stored procedure to conditionally enable the feature and log the usage to a separate table. Make sure the logs are maintained within the producer account.
E. Rely on the consumer to explicitly enable the feature through a configuration parameter, then log the feature's usage.

Answer: D

Explanation:
The correct answer is (A). Using 'APPLICATION$VERSION' within a stored procedure allows you to conditionally enable the feature based on the application version. Logging the usage to a separate table (within the producer account) provides valuable insights into feature adoption without exposing version details to the consumer. Resource monitors (D) track resource consumption but not specific feature usage. Roles (B) can control access but don't directly provide usage tracking. Option E relies too much on consumer action. While UDFs (C) can check the version, doing so in SQL queries for conditional enabling might not be the most performant or maintainable approach. All logs should be captured within Producer account.

NEW QUESTION # 165
You're developing a Snowflake Native Application and want to control access to different features based on roles. You have a Streamlit application that displays sensitive data, and you only want users with the 'DATA ANALYST and 'ADMIN' roles to be able to view this dat a. Which of the following methods or a combination of methods are MOST appropriate for enforcing this role-based access control within your Streamlit application and the underlying Snowflake resources?

A. Within the Streamlit application, use 'snowflake.connector' to execute 'SELECT and check if the returned role matches DATA ANALYST or 'ADMIN'. If so, display the data; otherwise, display an error message. Grant USAGE' privilege on a custom role, and grant 'SELECT on the underlying tables and USAGE on the schema to that custom role. Finally grant the 'DATA_ANALYST and 'ADMIN' roles to this custom role.
B. Within the Streamlit application, use the function to check for a URL parameter containing the user's role. If the role matches or 'ADMIN', display the data; otherwise, display an error message. Grant 'SELECT' privilege on the underlying data tables to the DATA ANALYST and 'ADMIN' roles directly.
C. Create a stored procedure that checks the user's role using 'CURRENT and returns the requested data only if the role matches or ' ADMIN'. Call this stored procedure from your Streamlit application. Do not grant any direct privileges on the underlying tables to the 'DATA_ANALYST or 'ADMIN' roles. Set the 'EXECUTE AS CALLER property on the stored procedure.
D. Implement row-level security (RLS) policies on the underlying tables to filter data based on the user's role. Then, within the Streamlit application, simply display the data without any explicit role checks. The RLS policies will automatically ensure that users only see the data they are authorized to see. Grant 'SELECT privilege on the underlying data tables to the 'DATA ANALYST and 'ADMIN' roles directly.
E. Create a custom python module that checks if the user's role matches "DATA_ANALYST or 'ADMIN' and configure it for role based access control.

Answer: C,D

Explanation:
The MOST appropriate methods are C and D. Option C: Using a stored procedure with 'EXECUTE AS CALLER and role checks provides a robust and secure way to control data access. The stored procedure acts as a gatekeeper, ensuring that only authorized roles can retrieve the data. Option D: Implementing row-level security (RLS) adds an additional layer of security by filtering data at the database level based on the user's role. This ensures that even if a user were to bypass the Streamlit application's role checks, they would still only be able to see the data they are authorized to see. Option A is susceptible to tampering and does not enforce data-level security. Option B requires an added level of complexity with an extra custom role and is unnecessary. Option E does not secure at the database level.

NEW QUESTION # 166
An application provider creates a Snowflake Native App that needs to access sensitive data within the consumer's account. The provider has already defined an APPLICATION ROLE named Which of the following combination of actions are required to grant the 'app_role' the ability to select data from a table named 'customer_data' in schema of database 'consumer_db' within the consumer's account? (Choose two)

A. Grant the 'IMPORTED PRIVILEGES' privilege on the 'consumer_db' database to the 'APPLICATION PACKAGE.
B. Grant the 'USAGE privilege on the schema to the 'APPLICATION ROLE app_role' .
C. Grant the 'SELECT privilege on the 'consumer_db.app_schema.customer_data' table to the 'APPLICATION ROLE app_role'.
D. Grant the 'SELECT privilege on the 'consumer_db.app_schema.customer_data' table to the 'APPLICATION PACKAGE
E. No privileges are needed as the Application already installed in consumer account.

Answer: B,C

Explanation:
To enable an application role to access objects in the consumer account, SELECT access on the table, along with usage access to the schema, need to be granted to the APPLICATION ROLE. Granting privileges to the APPLICATION PACKAGE only makes the privileges available for granting to the application roles, it does not automatically provide access. SELECT privilege on the table and USAGE on the schema are both needed. The APPLICATION ROLE, not PACKAGE, needs the SELECT privilege to the table. IMPORTED PRIVILEGES is typically granted to share data across accounts, not within an account for a Native App.

NEW QUESTION # 167
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