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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
Snowflake Native App Framework Overview	20%	- Native application concepts and architecture 1. Manifest files and setup scripts 2. Application packages and structure
Deployment and Marketplace Publishing	25%	- Distribution and lifecycle management 1. Version upgrades and release management 2. Marketplace listings and publishing
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 (Q23-Q28):

NEW QUESTION # 23
You are tasked with deploying a Snowflake Native Application that performs real-time data analysis. The application requires a warehouse to run and a user with specific privileges to access dat a. You want to automate the deployment process as much as possible, including warehouse creation, user provisioning, and privilege granting, all within the application package. Given the security considerations and best practices for Snowflake Native Applications, which of the following approaches is the MOST secure and recommended?

A. Employ a secure deployment pipeline that leverages a separate, pre-authorized Snowflake account to provision the warehouse and useL The application package then only includes the application logic, assuming the resources already exist.
B. Use a setup script within the application package, granting it the 'APPLY APPLICATION PASSTHROUGH PRIVILEGES privilege. This will enable the application to inherit the privileges of the user who installed the application, allowing it to create the warehouse and user on their behalf.
C. Request the consumer to manually create the warehouse and user with the required privileges before installing the application. Provide detailed instructions in the application documentation.
D. Utilize the 'INSTALL' privilege when creating the application package and execute the SQL script (containing 'CREATE WAREHOUSE, 'CREATE USER , and 'GRANT) within the application's setup script using the 'EXECUTE IMMEDIATE command. This allows the application to create resources within the consumer's account.
E. Include a SQL script within the application package that uses the 'CREATE WAREHOUSE, 'CREATE USER , and 'GRANT commands to create the warehouse, user, and grant necessary privileges. The script will be executed by the consumer upon installation.

Answer: D

Explanation:
Option C is the most appropriate. Snowflake Native Apps are designed to operate within a secure sandbox. The INSTALL privilege, combined with EXECUTE IMMEDIATE within the setup script, allows the application to create the necessary resources within the consumer's account in a controlled and automated manner. Option A is less secure, as it relies on the consumer executing arbitrary SQL. Option B increases the burden on the consumer. option D is overly complex for this scenario. APPLY APPLICATION PASSTHROUGH PRIVILEGES is about leveraging the consumer's privileges for accessing THEIR data, not for the creation of resources (option E).

NEW QUESTION # 24
A Snowflake Native Application uses a task 'aggregate_data' to aggregate dat a. This task is owned by the 'app_public' role and executes a stored procedure 'aggregate data proc'. Consumers have reported the task sometimes fails intermittently, citing permission issues, specifically related to accessing a specific table in the consumer account. The application provider has granted 'SELECT' privilege on the table to the 'app_public' role. However, the failures persist. What is the MOST LIKELY cause of the intermittent failures related to executing the task?

A. The stored procedure is executed with caller's rights (CALLER), but the application role 'app_public' doesn't have the ACTIVATION privilege on the task.
B. The task 'aggregate_data' is executing with definer's rights (OWNER) of the application, so the grant of SELECT privilege to 'app_public' is sufficient, and there is likely an issue with transient network connectivity.
C. The stored procedure is executed with caller's rights (CALLER), and the 'EXECUTE TASK privilege wasn't granted correctly, which causes the user to randomly lose access on the Snowflake Ul.
D. The stored procedure is executed with caller's rights (CALLER), but the application role 'app_public' doesn't have sufficient warehouse privileges in the consumer account.
E. The stored procedure is executed with definer's rights (OWNER), so the privilege check occurs against the application provider's account, not the consumer's account.

Answer: E

NEW QUESTION # 25
You are developing a Snowflake Native Application that includes a Python UDE This UDF needs to interact with an external API that requires authentication using OAuth 2.0. The application package should securely manage the OAuth credentials without exposing them to the consumer account. How can you securely configure and access the OAuth credentials from within the UDF?

A. Store the OAuth client ID and secret directly in the UDF code as string literals.
B. Use Snowflake's secret management feature to store the OAuth client ID and secret, and access them from the UDF using 'SYSTEM$GET SECRET.
C. Store the OAuth client ID and secret in environment variables within the Snowflake environment for the application.
D. Configure an OAuth integration in Snowflake and grant the UDF's role access to it, allowing the UDF to obtain tokens using 'SYSTEM$GET OAUTH TOKEN'.
E. Store the OAuth credentials in a secure external storage (e.g., AWS Secrets Manager) and retrieve them using an external function.

Answer: B,D

Explanation:
Storing credentials directly in the code (A) is a major security risk. Environment variables in Snowflake (B) are not designed for sensitive credentials. Snowflake's secret management (C) provides a secure way to store and access secrets. Using an external storage with an external function (D) is a viable option but adds complexity. OAuth integration (E) allows Snowflake to handle the OAuth flow, providing secure token management. Therefore, C and E provide the most secure and manageable solutions.

NEW QUESTION # 26
You are developing a Snowflake Native Application that interacts with a user-provided data source. The application needs to validate that the user has granted the necessary permissions on their dat a. The application package contains the following setup script:

Which of the following approaches is the MOST secure and reliable way to check for SELECT privileges within the procedure?

A. Query the 'INFORMATION SCHEMA.TABLE PRIVILEGES' view to check if 'app_role' has SELECT privilege on 'user_schema.user_table'.
B. Attempt a 'SELECT COUNT( ) FROM within a "TRY...CATCH' block and infer permissions based on the error message.
C. Use 'SHOW GRANTS TO ROLE app_role' and parse the output to see if SELECT privilege on 'user_schema.user_table' exists.
D. Assume SELECT privileges are granted as part of the application installation process without explicit validation.
E. Use function with appropriate parameters to directly check if the 'app_role' has SELECT privilege on 'user schema.user table'.

Answer: E

Explanation:
'SYSTEM$PRIVILEGE_CHECK' is the recommended and most secure method. It directly checks for the existence of a specified privilege for a role on an object. Parsing the output of 'SHOW GRANTS' is less reliable and prone to errors. 'TRY...CATCH' is inefficient and relies on error message parsing, which is discouraged. provides metadata but not a definitive check in the context of the application role having the necessary grants made by the consumer. Assuming privileges are granted is a security risk.

NEW QUESTION # 27
You are designing a Snowflake Native Application that requires granular control over the privileges granted to different application roles. You want to follow the principle of least privilege. You have the following requirements: Application roles , and app_read_only'. What is the most effective strategy to implement this using definer's rights?

A. Create views for each application role, granting SELECT privilege on the necessary tables to each view. Then, grant SELECT privilege on the appropriate view to each application role.
B. Create separate schemas for each application role, placing objects with different privileges into these schemas. Then, grant the appropriate privileges on each schema to the corresponding application role.
C. Create stored procedures owned by the application, with each stored procedure explicitly granting the required privileges to the corresponding role. Consumers must then grant USAGE on these procedures to their desired roles.
D. Create stored procedures owned by the application, with each stored procedure performing actions within the app. Grant OWNERSHIP on each stored procedure to the application admin. Consumers must then grant USAGE on these procedures to their desired roles.
E. Grant all privileges on all application objects to the 'app_admin' role and rely on the consumer to manage privilege inheritance for other roles.

Answer: C

Explanation:
Using stored procedures owned by the application and using DEFINER's rights offers the most granular control and aligns with the least privilege principle. The application provider defines the privileges within the stored procedures. The consumer only needs to grant USAGE on the stored procedures. Creating views or separate schemas can work, but they add complexity. Granting all privileges to the 'app_admin' role is too permissive and doesn't adhere to the principle of least privilege.

NEW QUESTION # 28
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