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Amazon AWS Certified Developer - Associate Sample Questions (Q355-Q360):

NEW QUESTION # 355
A developer is building an ecommerce application that uses multiple AWS Lambda functions. Each function performs a specific step in a customer order workflow, such as order processing and inventory management.
The developer must ensure that the Lambda functions run in a specific order.
Which solution will meet this requirement with the LEAST operational overhead?

A. Configure an AWS Step Functions state machine to invoke the Lambda functions in a specific order.
B. Configure an Amazon Simple Notification Service (Amazon SNS) topic to contain notifications about each step a function must perform. Subscribe the Lambda functions to the SNS topic. Use subscription filters based on the step each function must perform.
C. Configure an Amazon Simple Queue Service (Amazon SQS) queue to contain messages about each step a function must perform. Configure the Lambda functions to run sequentially based on the order of messages in the SQS queue.
D. Configure Amazon EventBridge Scheduler schedules to invoke the Lambda functions in a specific order.

Answer: A

NEW QUESTION # 356
A company is building a serverless application that uses AWS Lambda functions. The company needs to create a set of test events to test Lambda functions in a development environment. The test events will be created once and then will be used by all the developers in an IAM developer group. The test events must be editable by any of the IAM users in the IAM developer group.
Which solution will meet these requirements?

A. Create the test events. Configure the event sharing settings to make the test events shareable.
B. Create and store the test events in Amazon S3 as JSON objects. Allow S3 bucket access to all IAM users.
C. Create and store the test events in Amazon DynamoDB. Allow access to DynamoDB by using IAM roles.
D. Create the test events. Configure the event sharing settings to make the test events private.

Answer: A

Explanation:
Under the "Test" tab there's an option. (Shareable)
This event is available to IAM users within the same account who have permissions to access and use shareable events.
https://docs.aws.amazon.com/lambda/latest/dg/testing-functions.html#creating-shareable-events

NEW QUESTION # 357
A developer is using an AWS CloudFormation template to create a pipeline in AWS CodePipeline. The template creates an Amazon S3 bucket that the pipeline references in a source stage. The template also creates an AWS CodeBuild project for a build stage. The pipeline sends notifications to an Amazon SNS topic. Logs for the CodeBuild project are stored in Amazon CloudWatch Logs.
The company needs to ensure that the pipeline's artifacts are encrypted with an existing customer-managed AWS KMS key. The developer has granted the pipeline permissions to use the KMS key.
Which additional step will meet these requirements?

A. Apply an S3 bucket policy that ensures the pipeline sends only encrypted objects to the S3 bucket.
B. In the CloudFormation template, use the KMS key to encrypt the logs in CloudWatch Logs.
C. Create an Amazon S3 gateway endpoint that the pipeline can access.
D. Configure the notification topic to use the existing KMS key to enable encryption with the existing KMS key.

Answer: A

Explanation:
Comprehensive Detailed Explanation with all AWS Reference
Why Option C is Correct:
Ensuring that pipeline artifacts are encrypted with a customer-managed AWS KMS key involves configuring the S3 bucket policy to require encryption. This policy ensures all objects uploaded to the bucket are encrypted with the specified KMS key.
Why Other Options are Incorrect:
Option A: A gateway endpoint improves S3 access efficiency but does not enforce encryption.
Option B: Encrypting CloudWatch Logs is unrelated to securing pipeline artifacts.
Option D: Configuring SNS for encryption does not affect the artifacts stored in the S3 bucket.
AWS Documentation Reference:
Using Server-Side Encryption with S3 Bucket Policies

NEW QUESTION # 358
A company runs an AWS CodeBuild project on medium-sized Amazon EC2 instances. The company wants to cost optimize the project and reduce the provisioning time.

A. Configure the project to run on a CodeBuild reserved capacity fleet.
B. Select AWS Lambda as the compute mode for the CodeBuild project.
C. Set up Amazon S3 caching for the CodeBuild project.
D. Configure the project to run on a CodeBuild on-demand fleet.

Answer: C

Explanation:
Comprehensive and Detailed Step-by-Step Explanation:
* Option D: Set up Amazon S3 Caching for CodeBuild:
* CodeBuild supports S3 caching to store intermediate build artifacts and dependencies. This reduces the time required to download dependencies during subsequent builds, effectively lowering costs and improving build performance.
* By using S3 caching, developers can optimize costs without changing the compute type or adding complexity.
* Why Other Options Are Incorrect:
* Option A:CodeBuild does not have a "reserved capacity fleet" option.
* Option B:AWS Lambda cannot be used as the compute mode for CodeBuild projects. CodeBuild uses its own managed build environments.
* Option C:CodeBuild already operates on an on-demand basis, so this does not address the need for optimization or reduced provisioning time.

NEW QUESTION # 359
A company is building a web application on AWS. When a customer sends a request, the application will generate reports and then make the reports available to the customer within one hour. Reports should be accessible to the customer for 8 hours. Some reports are larger than 1 MB. Each report is unique to the customer. The application should delete all reports that are older than 2 days.
Which solution will meet these requirements with the LEAST operational overhead?

A. Generate the reports and then store the reports in an Amazon S3 bucket that uses server-side encryption. Generate a presigned URL that contains an expiration date Provide the URL to customers through the web application. Add S3 Lifecycle configuration rules to the S3 bucket to delete old reports.
B. Generate the reports and then store the reports as Amazon DynamoDB items that have a specified TTL.
Generate a URL that retrieves the reports from DynamoDB. Provide the URL to customers through the web application.
C. Generate the reports and then store the reports in an Amazon S3 bucket that uses server-side encryption. Attach the reports to an Amazon Simple Notification Service (Amazon SNS) message.
Subscribe the customer to email notifications from Amazon SNS.
D. Generate the reports and then store the reports in an Amazon RDS database with a date stamp.Generate an URL that retrieves the reports from the RDS database. Provide the URL to customers through the web application. Schedule an hourly AWS Lambda function to delete database records that have expired date stamps.

Answer: A

Explanation:
Explanation
This solution will meet the requirements with the least operational overhead because it uses Amazon S3 as a scalable, secure, and durable storage service for the reports. The presigned URL will allow customers to access their reports for a limited time (8 hours) without requiring additional authentication. The S3 Lifecycle configuration rules will automatically delete the reports that are older than 2 days, reducing storage costs and complying with the data retention policy. Option A is not optimal because it will incur additional costs and complexity to store the reports as DynamoDB items, which have a size limit of 400 KB. Option B is not optimal because it will not provide customers with access to their reports within one hour, as Amazon SNS email delivery is not guaranteed. Option D is not optimal because it will require more operational overhead to manage an RDS database and a Lambda function for storing and deleting the reports.
References: Amazon S3 Presigned URLs, Amazon S3 Lifecycle

NEW QUESTION # 360
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