Question 1

A developer wants to insert a record into an Amazon DynamoDB table as soon as a new file is added to an Amazon S3 bucket. Which set of steps would be necessary to achieve this?

Options :

A :

Create an event with Amazon EventBridge that will monitor the S3 bucket and then insert the records into DynamoDB.

B : Configure an S3 event to invoke an AWS Lambda function that inserts records into DynamoDB.

C :

Create an AWS Lambda function that will poll the S3 bucket and then insert the records into DynamoDB.

D : Create a cron job that will run at a scheduled time and insert the records into DynamoDB.

Answer: B

Question 2

An application will generate thumbnails from objects uploaded to an Amazon S3 bucket. The Developer has created the bucket configuration and the AWS Lambda function and has formulated the following AWS CLI command:

aws lambda add-permission --function-name CreateThumbnail --principal s3.amazonaws.com --statement-id s3invoke --action "lambda:InvokeFunction" --source-arn arn:aws:s3:::testbucket-source --source-account 523107438921

What will be achieved by running the AWS CLI command?

Options :

A :

A Lambda function will be created called CreateThumbnail with an Amazon SNS event source mapping that executes the function when objects are uploaded

B : The Lambda function CreateThumbnail will be granted permissions to access the objects in the testbucket-source bucket

C : The Amazon S3 service principal (s3.amazonaws.com) will be granted permissions to perform the lambda:InvokeFunction action

D : The Amazon S3 service principal (s3.amazonaws.com) will be granted permissions to perform the create an event-source mapping with the testbucket-source bucket

Answer: C

Question 3

A junior developer working on ECS instances terminated a container instance in Amazon Elastic Container Service (Amazon ECS) as per instructions from the team lead. But the container instance continues to appear as a resource in the ECS cluster.

As a Developer Associate, which of the following solutions would you recommend to fix this behavior?

Options :

A : The container instance has been terminated with AWS CLI, whereas, for ECS instances, Amazon ECS CLI should be used to avoid any synchronization issues

B : You terminated the container instance while it was in RUNNING state, that lead to this synchronization issues

C : A custom software on the container instance could have failed and resulted in the container hanging in an unhealthy state till restarted again

D : You terminated the container instance while it was in STOPPED state, that lead to this synchronization issues

Answer: D

Question 4

A developer creates a VPC named VPC-A that has public and private subnets. The developer also creates an Amazon RDS database inside the private subnet of VPC-A. To perform some queries, the developer creates an AWS Lambda function in the default VPC. The Lambda function has code to access the RDS database. When the Lambda function runs, an error message indicates that the function cannot connect to the RDS database.

How can the developer solve this problem?

Options :

A : Modify the RDS security group. Add a rule to allow traffic from all the ports from the VPC CIDR block.

B : Redeploy the Lambda function in the same subnet as the RDS instance. Ensure that the RDS security group allows traffic from the Lambda function.

C : Create a security group for the Lambda function. Add a new rule in the RDS security group to allow traffic from the new Lambda security group.

D : Create an IAM role. Attach a policy that allows access to the RDS database. Attach the role to the Lambda function.

Answer: C

Question 5

A company has deployed a REST API using Amazon API Gateway with a Lambda authorizer. The company needs to log who has accessed the API and how the caller accessed the API. They also require logs that include errors and execution traces for the Lambda authorizer.

Which combination of actions should the Developer take to meet these requirements? (Select TWO.)

Options :

A : Enable API Gateway execution logging

B : Enable detailed logging in Amazon CloudWatch.

C : Create an API Gateway usage plan.

D : Enable API Gateway access logs.

E : Enable server access logging.

Answer: A,D

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