Snowflake - NAS-C01–Valid Test Book

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Snowflake NAS-C01 Exam Syllabus Topics:

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

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Snowflake SnowPro Specialty - Native Apps Sample Questions (Q68-Q73):

NEW QUESTION # 68
An ISV is developing a data analytics application using Snowflake Native Apps. The application allows consumers to define custom data refresh schedules. These schedules are managed by stored procedures within the application. The stored procedures need to update a shared table (using SQL MERGE command) located in a different database (managed by the ISV) within the consumer's account. The Application provider doesn't want to give access to the underlying tables to the consumer. To achieve this, which of the following GRANT statements are needed to configure the correct set of privileges for the ISV's Application Role(s) to perform MERGE operations from inside the consumer's environment? (Select all that apply.)

A. GRANT ALL PRIVILEGES ON WAREHOUSE TO ROLE ;
B. GRANT SELECT ON ALL TABLES IN DATABASE TO ROLE ;
C. GRANT USAGE ON SCHEMA TO ROLE ;
D. GRANT USAGE ON DATABASE TO ROLE ;
E. GRANT INSERT, UPDATE, DELETE ON TABLE .. TO ROLE ;

Answer: C,D,E

Explanation:
To perform MERGE operations, the ISV application needs the following privileges: USAGE on the ISV database. USAGE on the ISV schema. INSERT, UPDATE, and DELETE on the shared table. SELECT is not enough for MERGE. Granting ALL PRIVILEGES on the warehouse is too broad and unnecessary for the specific task. Granting select on all tables is not required either as you're targeting a single table for DML operation.

NEW QUESTION # 69
A Native Application is being developed that requires access to the consumer's Snowflake account for billing purposes. The application needs to record the query history of the consumer's account to estimate resource usage. Which is the MOST secure and efficient method for the Native App to access this data, minimizing the permissions granted to the app and considering the governance aspects?

A. Grant the ' MONITOR USAGE' privilege to the Native App's service account, allowing it to query the view.
B. Use the 'READ SESSION' privilege to allow the application to read the current session context and infer the resource usage from it.
C. Grant the 'ACCOUNTADMIN' role to the Native App's service account. This provides full access to the account's query history.
D. Grant the ' USAGE privilege on the 'SNOWFLAKE' database to the Native App's service account, allowing it to query all tables and views in that database.
E. Create a stored procedure within the Native App that executes as the 'OWNER and queries the view. The stored procedure is granted to the Native App's service account with 'EXECUTE privileges.

Answer: E

Explanation:
Granting 'ACCOUNTADMIN' is highly insecure and violates the principle of least privilege. 'MONITOR USAGE is not sufficient to query 'QUERY_HISTORY. 'READ SESSION' provides limited contextual information and wouldn't allow retrieval of full query history. Granting USAGE on the 'SNOWFLAKE database is too broad and exposes more data than necessary. A stored procedure executing as the 'OWNER allows controlled access to the query history while minimizing the permissions granted directly to the application's service account.

NEW QUESTION # 70
You're building a Streamlit application within a Snowflake Native App that uses the Permissions API (hypothetical) to control access to sensitive dat a. Your security team has mandated that any changes to data access privileges must be audited. How can you effectively log all privilege grant and revoke operations performed via the Permissions API within your Streamlit application running inside Snowflake, assuming you are given the hypothetical 'PermissionsClient' and methods as below?

A. Rely solely on the Permissions API's built-in audit trails, assuming it automatically logs all operations to a system table accessible only by Snowflake administrators.
B. Implement a custom logging function that captures the API calls and their parameters. Use a try-except block around each API call, logging the details to a separate audit table in Snowflake, and pushing logs to external SIEM tools.
C. Configure Snowflake's event tables for security to track privilege grants and revokes. Create a Streamlit function that fetches and displays these audit events within the application's admin panel. Push data into separate staging area.
D. Leverage Snowflake's built-in 'QUERY _ HISTORY' view to track all SQL commands executed by the Streamlit application. Filter for 'GRANT and 'REVOKE statements to identify privilege changes. Replicate to external storage for retention.
E. Use Snowflake's native logging capabilities in the application's setup script, logging directly to the Snowflake event log. However, these logs may require a system administrator to interpret and extract.

Answer: B

Explanation:
Option A is the most comprehensive approach. It provides the most flexibility and control. By implementing a custom logging function, you can capture the specific details of each API call (including parameters), handle exceptions, and store the audit logs in a dedicated table within Snowflake. This table can then be easily queried, reported on, or integrated with external SIEM (Security Information and Event Management) tools for further analysis and alerting. Option B could be part of the solution, but filtering the QUERY_HISTORY table may not capture all details, especially if using stored procedures. It requires parsing SQL text, which can be brittle. Option C could work for some audit events, but you'd still need to create and manage a process to send these events to an audit log. Option D has limited granularity and security. Relying on Snowflake's native logs provides little control. Option E is incorrect; the hypothetical Permissions API doesn't automatically log actions to a user-accessible system table.

NEW QUESTION # 71
A Snowflake Native Application is designed to process customer data using a series of stored procedures. One of the stored procedures, process data', requires access to a stage named 'customer stage' in the consumer's account to load dat a. The application role 'app_role' is intended to manage all access within the application. However, the procedure fails with a permission error during testing in the consumer environment. Which of the following combination of steps is required to fix the problem?

A. Grant 'USAGE privilege on the database and schema containing 'customer_stage' to the 'app_role', and grant 'READ privilege on 'customer_stage' to the app_role' .
B. Grant 'USAGE privilege on the database and schema containing 'customer_stage' to the provider account, and grant privilege on 'customer_stage' to the 'app_role' .
C. The stored procedure needs to be defined with 'EXECUTE AS CALLER rights to assume the privileges of the role executing the procedure.
D. Grant 'USAGE privilege on the database and schema containing 'customer_stage' to the 'app_role', and create a new role in the consumer account, grant 'READ on the 'customer_stage' to this new role, then grant this new role to 'app_role' .
E. Grant 'READ and ' WRITE privilege on 'customer_stage' directly to the provider account.

Answer: A,C

Explanation:
Options A and E are correct. Option A: The 'app_role' needs 'USAGE privileges on the database and schema to access objects within them. It also needs 'READ' privilege on the stage to load data from it. Option E: If the stored procedure is accessing objects with the 'OWNER rights instead of 'CALLER rights, then it doesn't matter what the 'app_role' has privileges to. The procedure needs to be defined to execute as the caller to take advantage of the consumers permissions to external stages. Options B and C are incorrect because granting privileges directly to the provider account or the consumer account is the incorrect pattern for Snowflake Native Apps. The privileges should be managed within the consumer account, usually through an 'app_role' . Option D includes an unnecessary intermediary role that is not needed.

NEW QUESTION # 72
You're developing a Snowpark Container Services application. Your 'service.yaml' file defines a service named 'data_processor'. You want to create a service endpoint, 'ingest_endpoint' , that is secured and accessible only by authorized consumers of your Snowflake Native Application. Select the TWO SQL statements that, when used together, will correctly create and bind the service endpoint, ensuring proper OAuth authentication and authorization.

A. BIND SERVICE ENDPOINT ingest_endpoint FOR SERVICE data_processor WITH AUTHENTICATION TYPE = OAUTH TO APPLICATION PACKAGE;
B. CREATE OR REPLACE SERVICE ENDPOINT ingest_endpoint FOR SERVICE data_processor WITH AUTHENTICATION TYPE = SNOWFLAKE_JWT;
C. CREATE SERVICE ENDPOINT ingest_endpoint FOR SERVICE data_processor WITH AUTHENTICATION TYPE = OAUTH;
D. ALTER SERVICE data_processor ADD ENDPOINT ingest_endpoint WITH AUTHENTICATION TYPE = OAUTH;
E. BIND SERVICE ENDPOINT ingest_endpoint FOR SERVICE data_processor WITH AUTHENTICATION TYPE = NONE TO APPLICATION PACKAGE;

Answer: A,C

Explanation:
'CREATE SERVICE ENDPOINT ingest_endpoint FOR SERVICE data_processor WITH AUTHENTICATION TYPE = OAUTH;' creates the actual service endpoint. 'BIND SERVICE ENDPOINT ingest_endpoint FOR SERVICE data_processor WITH AUTHENTICATION TYPE = OAUTH TO APPLICATION PACKAGE;' links the endpoint to the application package and enables OAuth. The 'Bind' command makes sure to use the proper service with Authentication. Without Authentication, application can be compromised easily. Thus, option B and D are invalid here.

NEW QUESTION # 73
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