Snowflake SnowPro Specialty - Native Apps : NAS-C01

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Snowflake NAS-C01 Exam Syllabus Topics:

Snowflake SnowPro Specialty - Native Apps Sample Questions:

1. A Snowflake Native App is designed to transform data in the consumer's account. The application requires temporary write access to a staging table owned by the consumer. Which of the following SQL statements, when executed within the application package's logic, correctly grants the application role the necessary privileges to write to the consumer-owned staging table named 'CONSUMER STAGING TABLE in schema 'CONSUMER SCHEMA'?

A) GRANT INSERT, UPDATE, DELETE ON TABLE CONSUMER_SCHEMA.CONSUMER STAGING_TABLE TO APPLICATION ROLE app_role WITH GRANT OPTION;
B) GRANT INSERT, UPDATE, DELETE, TRUNCATE ON TABLE CONSUMER SCHEMA.CONSUMER STAGING TABLE TO APPLICATION ROLE app_role WITH GRANT OPTION;
C) GRANT INSERT, UPDATE, DELETE ON TABLE TO APPLICATION ROLE app_role;
D) GRANT ALL ON TABLE CONSUMER SCHEMCONSUMER_STAGING TABLE TO APPLICATION ROLE app_role;
E) GRANT SELECT, INSERT, UPDATE, DELETE, TRUNCATE ON TABLE CONSUMER SCHEMA.CONSUMER STAGING TABLE TO APPLICATION ROLE app_role;

2. You've developed a Snowflake Native Application. During the installation process in a consumer's account, the installation fails. The error message is vague and doesn't pinpoint the exact cause. What are the MOST effective steps you can take, in order , to diagnose the installation failure and provide the consumer with a resolution? (Select the top 3 steps)

A) Leverage the 'SYSTEM$GET PKG INSTALLATION ERRORS function in the provider account to retrieve detailed error messages and debugging information related to the failed installation. Correlate this with the installation version and consumer account I
B) Review the event logs generated by the application during the installation process using Snowflake Event Tables. Use the appropriate filtering and querying techniques to narrow down the relevant events.
C) Ask the consumer to manually create all the required roles and grants before attempting the installation again.
D) Examine the consumer's ACCOUNT_USAGE views, specifically related to query history and errors that occurred during the installation timeframe.
E) Request the consumer to share their entire Snowflake account metadata with you for debugging purposes.

3. As a Native App Provider, you've identified a performance bottleneck in a query against a table within your application's container due to an inefficient join. The query is part of a view exposed to consumers. Which of the following actions would be MOST effective in improving the query performance while minimizing disruption to consumers?

A) Create a materialized view in place of the existing view, pre-computing the join results. This will require consumers to update their queries to use the new materialized view name.
B) Rewrite the query in the view definition to use a more efficient join algorithm (e.g., using hints). Consumers will automatically benefit from the improved performance.
C) Create a search optimization policy on columns used in the 'WHERE' clause in the view. This does not require any changes from the consumers.
D) Implement a scheduled task to regularly update the statistics of the table involved in the join. This will help the query optimizer make better decisions, and consumers will see improved performance gradually.
E) Add a 'CLUSTER BY clause to the underlying table based on the join keys. Consumers will automatically benefit from improved query performance without any changes on their end.

4. You are developing a subscription-based Snowflake Native Application that offers tiered pricing (Basic, Premium, Enterprise) based on resource consumption (e.g., compute hours, data storage). Consumers select their desired tier during the subscription process. Your application needs to dynamically adjust resource limits based on the selected tier. Which combination of the following actions should you take to correctly implement this?

A) Create separate resource monitors for each tier and associate the consumer's account with the appropriate resource monitor based on their selected tier during application installation.
B) Implement role-based access control (RBAC) using different roles for each tier, granting each role appropriate privileges for data access and compute resources. Assign users to roles based on their subscription tier.
C) Store tier-specific resource limits (e.g., compute hours, data storage limits) in a configuration table within the application. Implement stored procedures that enforce these limits during runtime using custom logic.
D) Use 'ALTER WAREHOUSE commands within the application to dynamically adjust warehouse sizes based on the selected tier, after retrieving the selected tier information via the application's configuration metadata.
E) Leverage Snowflake's data governance features, creating row access policies for each tier and assigning them based on the consumer's subscription status

5. A data engineer, Alice, is developing a Snowflake Native Application. She wants to implement event sharing to notify consumers when certain data thresholds are breached within the application's managed tables. What is the MOST effective and secure approach for implementing this event sharing mechanism, ensuring that consumers can subscribe to these events without direct access to the application's internal tables?

A) Use Snowflake Streams and Tasks within the provider account to continuously monitor the managed tables and create events that are pushed to a shared data lake. Consumers then access the data lake.
B) Grant SELECT privileges on the managed tables directly to consumer accounts, using secure views to filter data.
C) Create a series of external functions that are called when the application's data changes. These functions will call an external notification service that alerts consumers.
D) Leverage Snowflake's event tables (using EVENT TABLES) to capture significant data changes, then create an API function using 'CREATE FUNCTION' with 'RETURNS TABLE' in the application package to expose these events to consumers through a secure share. Implement RBAC within the API function to manage access.
E) Implement a Python UDF that queries the managed tables and sends email notifications to consumers whenever a threshold is breached.

Solutions: