Snowflake SnowPro Core Certification NAS-C01

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Snowflake NAS-C01 Exam Syllabus Topics:

Snowflake SnowPro Specialty - Native Apps Sample Questions:

1. You are developing a Snowflake Native Application designed to audit user activity within a consumer's Snowflake account. Your application needs to store audit logs persistently and efficiently. You anticipate high write volumes and require the ability to query these logs effectively for compliance purposes. Which of the following strategies is the MOST appropriate for storing and managing audit logs within your native application?

A) Write audit logs to a Snowflake queue. Configure a Snowpipe to load the data continuously into a Snowflake table.
B) Store audit logs as JSON files in a variant column within a Snowflake table.
C) Store audit logs in an external stage, leveraging cloud storage. Implement periodic data loading from the stage into a Snowflake table for querying.
D) Store audit logs directly in a Snowflake table, leveraging clustering keys and partitioning for efficient querying and maintenance.
E) Send audit logs to a third-party logging service via external functions. Maintain a summary table within Snowflake containing aggregated audit data.

2. You are developing a Snowflake Native Application package that provides a set of UDFs for data transformation. The UDFs require specific Snowflake privileges to access data in consumer accounts. Which of the following methods can ensure your application has the necessary privileges when installed in a consumer account? (Choose all that apply)

A) Create a separate role in the consumer account and grant the necessary privileges to that role. Have the application assume this role.
B) Request the required privileges in the application package manifest file ('manifest.yml'
C) Instruct consumers to manually grant the necessary privileges to the APPLICATION role after installation.
D) Use 'GRANT OWNERSHIP' to grant the APPLICATION role ownership of the target objects in the consumer account.
E) Leverage 'GRANT APPLICATION ROLE ... ON ..: statements in the setup script to grant the APPLICATION role the required privileges.

3. You have a Snowflake Native Application that utilizes a managed table. After upgrading your application to version 2.0, some users report that they are missing data in the managed table. After investigation, you realize version 2.0 changed the schema of the managed table and also did not properly migrate all the data from old format into new format. Which of the following steps should be taken to address the missing data after upgrading a Snowflake Native Application?

A) Manually insert the missing data into the managed table in each consumer's account, contacting affected users to coordinate the data entry.
B) Create a new version 2.1 that includes a data migration script to transfer data from the old schema (as it existed in version 1.0) to the new schema in version 2.0. Use release directives to upgrade affected users to version 2.1 after staging.
C) Since managed tables are fully managed by Snowflake, contact Snowflake support to initiate a data recovery process in each affected consumer account.
D) Rollback all users to version 1.0 and then perform the schema migration directly on the consumer's account using custom SQL scripts.
E) Create a new version 2.1. Within version 2.1's setup script, dynamically detect if the application is an upgrade from 1.0 and, if so, execute the data migration script to transfer data from the old schema to the new schema.

4. A financial services company is developing a Snowflake Native App. It needs to securely access external market data via an API and store the processed results in a consumer-provided table. Considering security best practices and the Snowflake Native App Framework limitations, which of the following approaches represents the MOST secure and recommended implementation for this scenario?

A) Utilize a Python UDF with the 'external network access' capability to call the external API directly from within the UDF. Store the processed data directly into a consumer-provided table by using the application role. API key is stored in snowflake secret.
B) Use a Snowflake external function with an API integration, configured with a service account that has the necessary permissions to access the API. Store the processed data in a consumer-provided table using stored procedures and INSERT statements using the application role.
C) Use a Snowflake external function with an API integration that passes the API key as a parameter. Store the processed data in a consumer-provided table using dynamic SQL.
D) Employ a Snowflake external function, configured with a service account, which invokes an API integration stored in the provider account. The external function returns the data, which is then inserted into a consumer-owned table using a stored procedure and INSERT statements, where the application role has been granted the necessary INSERT privilege.
E) Utilize a Java UDF with the 'network access' capability to call the external API directly from within the UDF. Store the processed data directly into a consumer- provided table by using the application role with INSERT privilege granted by consumer.

5. A Snowflake Native App developer is designing the upgrade process for their application. They need to ensure that data stored in the application's managed tables is preserved during the upgrade and that the application remains functional throughout the upgrade process. Which of the following strategies should the developer implement to achieve these goals? (Select TWO)

A) Utilize Snowflake's data sharing capabilities to create a read-only replica of the application's data for the new version to access during the upgrade.
B) Implement a versioning system for the application's metadata using the ' APPLICATION VERSION' construct, ensuring that the new version can handle data from previous versions.
C) Design the application's data model to be backward-compatible, allowing the new version to read and write data in the format used by previous versions. Use 'ALTER TABLE to add new columns or modify existing ones without breaking existing functionality.
D) Use the 'DROP TABLE command with the 'CASCADE' option to remove all tables and views before deploying the new version of the application.
E) Before upgrading, unload all data from the application's tables to cloud storage, and then reload the data into the new version after the upgrade is complete.

Solutions: