QUESTION: 129

A developer is creating an AWS Lambda function. The Lambda function will consume messages from an Amazon Simple Queue Service (Amazon SQS) queue. The developer wants to integrate unit testing as part of the function's continuous integration and continuous delivery (CI/CD) process.
How can the developer unit test the function?

Create an AWS CloudFormation template that creates an SQS queue and deploys the Lambda function. Create a stack from the template during the CI/CD
process. Invoke the deployed function. Verify the output.
Create an SQS event for tests. Use a test that consumes messages from the
SQS queue during the function's Cl/CD process.
Create an SQS queue for tests. Use this SQS queue in the application's unit test. Run the unit tests during the CI/CD process.
Use the aws lambda invoke command with a test event during the CIICD
process.

Answer(s): D

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QUESTION: 130

A developer is working on a web application that uses Amazon DynamoDB as its data store. The application has two DynamoDB tables: one table that is named artists and one table that is named songs. The artists table has artistName as the partition key. The songs table has songName as the partition key and artistName as the sort key.
The table usage patterns include the retrieval of multiple songs and artists in a single database operation from the webpage. The developer needs a way to retrieve this information with minimal network traffic and optimal application performance.
Which solution will meet these requirements?

Perform a BatchGetltem operation that returns items from the two tables. Use the list of songName/artistName keys for the songs table and the list of artistName key for the artists table.
Create a local secondary index (LSI) on the songs table that uses artistName as the partition key. Perform a query operation for each artistName on the songs table that filters by the list of songName. Perform a query operation for each artistName on the artists table.
Perform a BatchGetitem operation on the songs table that uses the songName/artistName keys. Perform a BatchGetltem operation on the artists table that uses artistName as the key.
Perform a Scan operation on each table that filters by the list of songName/artistName for the songs table and the list of artistName in the artists table.

Answer(s): A

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QUESTION: 131

A company is developing an ecommerce application that uses Amazon API Gateway APIs.
The application uses AWS Lambda as a backend. The company needs to test the code in a dedicated, monitored test environment before the company releases the code to the production environment.
Which solution will meet these requirements?

Use a single stage in API Gateway. Create a Lambda function for each environment. Configure API clients to send a query parameter that indicates the environment and the specific Lambda function.
Use multiple stages in API Gateway. Create a single Lambda function for all environments. Add different code blocks for different environments in the
Lambda function based on Lambda environment variables.
Use multiple stages in API Gateway. Create a Lambda function for each environment. Configure API Gateway stage variables to route traffic to the
Lambda function in different environments.
Use a single stage in API Gateway. Configure API clients to send a query parameter that indicates the environment. Add different code blocks for different environments in the Lambda function to match the value of the query parameter.

Answer(s): C

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QUESTION: 132

A developer creates an AWS Lambda function that retrieves and groups data from several public API endpoints. The Lambda function has been updated and configured to connect to the private subnet of a VPC. An internet gateway is attached to the VPC.
The VPC uses the default network ACL and security group configurations.
The developer finds that the Lambda function can no longer access the public API. The developer has ensured that the public API is accessible, but the Lambda function cannot connect to the API
How should the developer fix the connection issue?

Ensure that the network ACL allows outbound traffic to the public internet.
Ensure that the security group allows outbound traffic to the public internet.
Ensure that outbound traffic from the private subnet is routed to a public
NAT gateway.
Ensure that outbound traffic from the private subnet is routed to a new internet gateway.

Answer(s): C

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QUESTION: 129

QUESTION: 130

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QUESTION: 132