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Snowflake NAS-C01 시험 요강 주제:

최신 SnowPro Core Certification NAS-C01 무료샘플문제

1. 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) 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.
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) 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.
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.

2. You are developing a Snowflake Native App using Python that performs complex data transformations using UDFs and external functions. During consumer testing, you observe intermittent 'Remote service timed out' errors when calling the external function. The external function is hosted on AWS Lambd a. Which combination of the following actions would BEST address this issue, ensuring reliability without compromising security?

A) Implement queue-based processing for external function calls using Snowflake streams and tasks, leverage a message queue service (e.g., SQS) to buffer requests, and ensure the Lambda function has sufficient concurrency and is not being throttled.
B) Cache the results of the external function calls in a Snowflake table to reduce the number of calls to the external service, and implement robust error handling and logging in both the Snowflake UDF and the Lambda function. Always return a value, even in case of error.
C) Implement retry logic in the Python code calling the external function with exponential backoff, and configure Snowflake to use a larger warehouse size to improve network bandwidth. Furthermore, check if AWS Lambda throttles the execution of requests.
D) Migrate the external function to a Snowflake Java UDF to minimize network latency, and reduce the payload size sent to the external function. Verify that the AWS Lambda function and Snowflake instance are in the same region.
E) Increase the timeout setting for the external function in Snowflake, optimize the Lambda function code for faster execution, and monitor Lambda function metrics (e.g., duration, errors) using CloudWatch. Also, increase the memory allocation for the AWS Lambda function.

3. You are developing a Snowflake Native Application that needs to access user-provided data through a Secure Data Sharing. The consumer must explicitly grant access to their data container. Which approach provides the MOST secure and efficient method for allowing your application to access this data and ensure proper governance?

A) Request the consumer to create a share containing the desired data and grant usage on the share to your application's account. The application then imports this share into its own environment.
B) Require the consumer to create a database from their share within your application's environment.
C) Your application creates a secure view on the consumer's data container, allowing only specific data to be accessed.
D) Instruct the consumer to create a database role in their account and grant it all necessary privileges on the data container, then grant that role to your application's account.
E) Implement a custom API endpoint that the consumer must call to securely transmit their data to your application.

4. You are developing a Native App on Snowflake that needs to interact with an external REST API. To ensure proper security, you want to store the API key securely within the application package and use it for authentication. Which of the following is the MOST secure and RECOMMENDED method to accomplish this?

A) Hardcode the API key directly into the application code within a UDF (User-Defined Function).
B) Store the API key as a secret using Snowflake's Secret Management feature and reference it within a secure UDE
C) Create a key-pair stored procedure. Storing the API key as a secret, then decrypting the key during each API call.
D) Store the API key in a secure stage with encryption and grant SELECT privilege to the application role.
E) Store the API key in a table within the application database with minimal access control, relying on Snowflake's data encryption at rest.

5. You are developing a Snowflake Native Application that relies on external functions (UDFs or external functions using API integration) to enrich dat a. After installing the application in a customer's account, you observe that the external functions are failing intermittently. The error messages indicate network connectivity issues. Which of the following troubleshooting steps would be MOST effective in diagnosing and resolving this problem from the provider's perspective, assuming you cannot directly access the customer's network configuration?

A) Migrate the external functions to use Snowflake's Snowpark Container Services to ensure they run within the Snowflake environment and bypass any network restrictions.
B) Create a separate Snowflake Native App that only tests network connectivity to the external API endpoint. Ask the consumer to install and run the application, and provide you with the results.
C) Implement retry logic within the external function calls with exponential backoff. Log all failed attempts, including timestamps and error messages, within your provider's environment, for later analysis. Provide the customer with aggregated success/failure metrics from your logs.
D) Instruct the customer to check their network firewall rules to ensure that outbound traffic to your API endpoint is allowed. Provide them with a list of IP addresses for your service.
E) Monitor the external functions calls from system $ table and analyze the latency and error codes.

질문과 대답: