Snowflake NAS-C01 real exam prep : SnowPro Specialty - Native Apps

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Snowflake NAS-C01 Exam Syllabus Topics:

Snowflake SnowPro Specialty - Native Apps Sample Questions:

1. You've built a Snowflake Native Application that processes data and exposes a set of stored procedures to the consumer. You're implementing a CI/CD pipeline using GitLab CI/CD for deploying updates. Your pipeline includes the following stages: linting, unit testing, integration testing, and deployment to a staging environment. During the integration testing stage, you want to verify that the exposed stored procedures function correctly against a representative dataset. What is the MOST effective approach for performing these integration tests?

A) Mock the Snowflake environment entirely within the GitLab CI/CD runner and execute the stored procedures against the mock environment. This eliminates the need for a live Snowflake connection during testing.
B) Use the application's setup script to automatically create a test database populated with sample data when the application is installed. Integration tests can then run queries in this database to ensure the application functions correctly.
C) Provision a dedicated Snowflake testing account with a representative dataset. Install the application version in this account and execute the stored procedures from within the account using Snowflake's SQL API or a Snowpark Python test framework.
D) Create a separate set of stored procedures within the application package specifically for testing purposes. These procedures should mimic the functionality of the production stored procedures and assert their behavior.
E) Execute the stored procedures directly from the GitLab CIICD runner using a Snowflake connection established with hardcoded credentials in the CI/CD configuration.

2. You are developing a Snowflake Native Application with a custom setup script. Within the setup script, you need to perform different actions based on whether the application is being installed for the first time in a consumer's account, or if it's an upgrade from a previous version. Which of the following functions or techniques can you reliably use within the setup script to determine if the current execution is a fresh installation vs. an upgrade? (Assume the app version is maintained and accessible as a variable 'current_version' .)

A) Use the table 'APPLICATION_REGISTRY' function to check for an existing entry for the application in the current account.
B) Check if the current version is '1.0', assuming the initial version of the application will always be '1.0'.
C) Use 'SYSTEM$GET_PREVIOUS_VERSION()' function inside the setup script. If it returns NULL, it is the first install.
D) Query the 'INFORMATION_SCHEMAPPLICATIONS' view to check if the application name already exists in the consumer's account.
E) Attempt to read a known persistent setting from the application's metadata. If the setting exists, it's an upgrade; otherwise, it's a fresh install. (Requires metadata setup in a previous version)

3. A consumer installs a Snowflake Native Application from the Marketplace. The application requires access to a specific table, 'CUSTOMER DATA' , in the consumer's account. Which of the following steps are essential for the consumer to properly grant the application the necessary permissions, following least privilege principles, and ensuring the application functions as intended? Assume the application developer has properly requested the table grant in the setup script.

A) Grant the 'IMPORTED PRIVILEGES privilege on the database containing 'CUSTOMER_DATX to the application role created during installation.
B) Create a share from the provider account granting access to the 'CUSTOMER DATA' table and import it into the consumer account.
C) Grant the 'SELECT privilege directly on the 'CUSTOMER_DATA' table to the 'SNOWFLAKE.APP_ROLE' role associated with the application instance.
D) Grant the 'USAGE privilege on the database and schema containing 'CUSTOMER_DATA' to the application role and then grant 'SELECT on the 'CUSTOMER DATA table to the application role.
E) Grant 'OWNERSHIP' on the "CUSTOMER_DATR table to the application role. This provides the application with complete control over the table.

4. You are developing a Snowflake Native Application that manages customer accounts. In version 1.0, you had a table named 'CUSTOMER_ACCOUNTS with columns 'ACCOUNT D', 'CUSTOMER NAME, and 'EMAIL'. You are now releasing version 2.0, which requires adding a new column 'PHONE NUMBER to the 'CUSTOMER ACCOUNTS table, but you need to ensure backward compatibility and allow seamless upgrades for existing installations. Which of the following approaches within the 'setup.sqr file is the MOST robust and reliable to implement this schema change without disrupting existing users?

A)

B)

C)

D)

E)

5. A provider is developing a Snowflake Native Application that uses a managed task to perform critical data transformations. The provider wants to ensure the managed task is only ever executed when the application is in a 'RUNNING' state. They have defined a secure view which returns a single row and a column named 'status' of type VARCHAR. The provider intends to use the 'EXECUTE MANAGED TASK' privilege in conjunction with a user-defined function (UDF) to control task execution. Which of the following approaches, utilizing a UDF and the 'EXECUTE MANAGED TASK' privilege, will correctly and securely prevent the managed task from running unless the application status is 'RUNNING'? Assume the UDF is created with the 'SECURE keyword.

A) create a UDF that executes if 'SELECT status FROM app_db.app_schema.app_status_view' does not return 'RUNNING'. Grant 'EXECUTE MANAGED TASK' on the managed task to the application role. Do not grant SELECT on the view.
B) Create a UDF that returns TRUE only if 'SELECT status FROM app_db.app_schema.app_status_view' returns 'RUNNING'. Then, in the managed task definition, use the WHEN clause with the UDF. Grant 'EXECUTE MANAGED TASK' on the managed task to the application role. Do not grant SELECT on the view.
C) Create a UDF that executes 'SYSTEM$TASK SUSPEND('app_db.app_schema.my_managed_task'Y if 'SELECT status FROM app_db.app_schema.app_status_view' does not return 'RUNNING', otherwise executes Grant 'EXECUTE MANAGED TASK' on the managed task to the application role. Grant 'SELECT on the view.
D) Create a UDF that executes ' if 'SELECT status FROM app_db.app_schema.app_status_view' returns 'RUNNING'. Grant 'EXECUTE MANAGED TASK' on the managed task to the application role. Grant SELECT on the view.
E) Create a UDF that returns TRUE only if 'SELECT status FROM app_db.app_schema.app_status_view' returns 'RUNNING'. Then, in the managed task definition, use the WHEN clause with the UDF. Grant 'EXECUTE MANAGED TASK' on the managed task and 'SELECT on the to the application role.

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