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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. Application packages and structure 2. Manifest files and setup scripts
Deployment and Marketplace Publishing	25%	- Distribution and lifecycle management 1. Marketplace listings and publishing 2. Version upgrades and release management
Native Application Design and Creation	35%	- Application development workflow 1. Application roles and privileges 2. Building and versioning applications

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Snowflake SnowPro Specialty - Native Apps Sample Questions (Q196-Q201):

NEW QUESTION # 196
You are developing a Snowflake Native Application that processes customer dat a. To comply with data residency requirements, you need to ensure the application processes data within the customer's Snowflake account. The application logic resides in a Snowpark Python stored procedure. During development, you test this procedure using the 'CALL' command. However, after installing the application in a customer's account, the procedure fails with a 'privilege insufficient' error. What are the MOST likely reasons for this and how can you rectify them within the package definition?

A. The stored procedure requires the 'IMPORTED PRIVILEGES on the database. Grant this using 'GRANT IMPORTED PRIVILEGES ON DATABASE TO APPLICATION ROLE in the setup script.
B. The application role lacks sufficient privileges on the data sources within the customer's account. Grant the appropriate privileges (e.g., 'SELECT , 'INSERT) on the required tables/views to the application role in the setup script using 'GRANT SELECT ON TABLE TO APPLICATION ROLE
C. The application manifest is missing the 'external_network_accesS property set to 'true'. Add this to the manifest and use network rules if the application requires access to external resources.
D. The procedure owner is not the application. This can be resolved by transferring ownership to the application role using 'ALTER PROCEDURE (...) OWNER TO APPLICATION ROLE in the setup script.
E. The stored procedure is missing the EXECUTE MANAGED ACCOUNT privilege. Add 'GRANT EXECUTE MANAGED ACCOUNT ON PROCEDURE TO APPLICATION ROLE to the setup script.

Answer: B,E

Explanation:
When a Snowflake Native Application runs in a customer's account, it operates under the security context of an application role defined within the application package. The 'privilege insufficient error suggests the application role lacks the necessary permissions to execute the stored procedure or access underlying data. Option A correctly identifies the need for the EXECUTE MANAGED ACCOUNT privilege for stored procedures. Option B highlights the importance of granting specific data access privileges to the application role on the customer's data sources. Option C is incorrect because the procedure owner doesn't need to be changed for correct application working. Option D pertains to access to external networks, not internal privileges. Option E is incorrect because imported privileges are not required to execute stored procedure.

NEW QUESTION # 197
Which of the following statements regarding warehouse sizing and configuration for a Snowflake Native Application are true?

A. A larger warehouse size always guarantees faster query execution, regardless of the query's characteristics.
B. The 'MAX CONCURRENCY LEVEL' parameter helps manage the number of queries that can be executed concurrently on the warehouse.
C. The 'AUTO SUSPEND' parameter controls how long a warehouse remains active after executing queries, impacting cost.
D. Warehouse size cannot be changed after it is created.
E. The parameter determines if the warehouse is used for data loading vs query processing.

Answer: B,C

Explanation:
Warehouse size can be changed after creation using 'ALTER WAREHOUSE statement. A larger warehouse is not always faster; it depends on the query's design and data volume. The 'AUTO SUSPEND' parameter is crucial for cost control as it determines the idle time before automatic suspension. While Snowflake has virtual warehouses, the ' WAREHOUSE_TYPE parameter doesn't exist. 'MAX CONCURRENCY LEVEL' is essential for managing concurrent queries and preventing resource contention, improving overall application performance.

NEW QUESTION # 198
You are developing a Snowflake Native Application using Snowpark Container Services. The application needs to access sensitive data stored in an internal stage, but you want to ensure that only the application's container service can access this stage and no other users or processes. How can you achieve this using network policies and ingress/egress rules?

A. Create an ingress rule for the container service that allows only outbound traffic to the internet. Grant 'READ and 'WRITE privileges on the internal stage to the Native App's service account.
B. Create a network policy that allows inbound traffic from all IP addresses and attach it to the account. Grant 'READ and 'WRITE' privileges on the internal stage to the Native App's service account.
C. Create an ingress rule for the container service that specifies allowed inbound connections and egress rule for the container service that only allows outbound traffic to Snowflake's internal endpoint for stage access. Grant 'READ and 'WRITE privileges on the internal stage to the Native App's service account.
D. Create a network policy that allows inbound traffic only from the specific IP address range of the Snowflake region where the container service is running. Grant READ and 'WRITE privileges on the internal stage to the Native App's service account.
E. Create an egress rule for the container service that allows outbound traffic only to Snowflake's internal IP address range. Create a network policy that allows inbound traffic only from the container service's egress IP address. Grant 'READ and 'WRITE privileges on the internal stage to the Native App's service account.

Answer: C

Explanation:
Option A provides no security. Option B relies on Snowflake's region IP addresses, which are not guaranteed and may change. Option C focuses on outbound traffic from the container service but doesn't properly restrict inbound access. Option D restricts outbound traffic unnecessarily and doesn't address inbound security. Option E is the MOST secure. It uses ingress and egress rules to control both inbound and outbound traffic for the container service and grants the necessary privileges to the service account. Ingress rule to specify the allowed inbound connection, and egress rule to only allow connection to snowflake's internal endpoint for stage access. This prevents other processes/users from accessing the stage.

NEW QUESTION # 199
You are deploying a Snowflake Native Application that utilizes a UDF (User-Defined Function) to perform complex data transformations. The UDF is written in Python and depends on several external packages. You need to ensure that the consumer of your application can seamlessly install and use the UDF without encountering dependency conflicts or versioning issues. How should you manage the UDF and its dependencies during the deployment process, considering Snowflake's Native App framework?

A. Use Anaconda packages within the Snowflake environment to manage Python dependencies. Ensure all required packages are explicitly listed in the setup script used during the application installation process.
B. Upload the Python UDF code directly into a stage and create a Snowflake function using the 'CREATE FUNCTION' command. Rely on the consumer's existing Python environment to resolve dependencies.
C. Utilize the Snowflake Native Apps framework to bundle the Python UDF and its dependencies within the application package. Snowflake will automatically handle dependency resolution during application installation.
D. Package the Python UDF and its dependencies into a ZIP file and include it in the application package. Consumers will need to manually install the dependencies using 'conda install' after installing the application.
E. Document the Python UDF dependencies in the application's documentation and instruct consumers to manually install them before using the function. No packaging is required.

Answer: C

Explanation:
The Snowflake Native Apps framework is designed to handle dependency management automatically. Option D is the correct answer. The framework ensures that the UDF and its dependencies are packaged together and resolved seamlessly during installation, avoiding conflicts and versioning issues for the consumer. Options A, C, and E place the burden of dependency management on the consumer, which is not ideal. While B uses Anaconda packages, it's less seamless and automatic than using the Native Apps framework's built-in capabilities. This automatic dependency resolution is a key benefit of the Native Apps framework.

NEW QUESTION # 200
You are developing a Snowflake Native Application that uses a UDF to process data in the consumer's account. The UDF needs to access a specific table in the consumer's account but the UDF is running as Invoker's Rights (IR). Select all that apply to securely configure data access for this scenario using a data access framework and least privilege principles:

A. Create a stored procedure running as OWNER, grant necessary privileges, then call this SP from UDF running as Invoker.
B. Create a secure view that exposes only the necessary columns of the table, granting 'SELECT privilege on the secure view to the application's invoker role. Configure the UDF to select from this secure view.
C. Grant 'SELECT privilege on the specific table directly to the application's invoker role.
D. Grant 'SELECT privilege on the specific table to the application's service user role. Configure the UDF to run as OWNER, and use 'EXECUTE AS OWNER.
E. Create an API integration that enables the UDF to securely authenticate and access the data through an external service.

Answer: A,B

Explanation:
Options B and E are correct. Option B implements the data access framework with least privilege using secure views. Granting direct SELECT access (Option C) to the table to the invoker role is not recommended because it exposes the entire table and it will not work as IR UDF cannot directly access consumer data. Using external services(Option D) is an option, but not the most efficient for accessing local data. Option A won't work directly without proper data access framework as it is. Data access framework will solve this issue. Using an intermediate SP as OWNER called by the UDF as INVOKER is a valid approach.

NEW QUESTION # 201
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