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The AWS Certified Developer - Associate exam is a rigorous certification that validates your skills and expertise in developing applications on AWS. With the increasing demand for cloud computing skills, this certification can help you stand out in the job market and advance your career in the IT industry.

The AWS-Developer exam comprises 65 multiple-choice and multiple-response questions, which candidates have 130 minutes to complete. The exam covers a range of topics, including AWS services, application deployment, security, and troubleshooting. Passing the exam requires a score of 720 out of 1000. Certification as an AWS Certified Developer - Associate demonstrates that an individual has the knowledge and skills required to develop and deploy cloud-based applications on AWS, making them a valuable asset to any organization that uses the AWS platform.

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Amazon AWS Certified Developer - Associate Sample Questions (Q38-Q43):

NEW QUESTION # 38
A user is creating an EBS volume. He asks for your advice. Which advice mentioned below should you
not give to the user for creating an EBS volume?

A. Attach multiple volumes to the same instance
B. Stripe multiple volumes attached to the same instance
C. Take the snapshot of the volume when the instance is stopped
D. Create an AMI from the attached volume

Answer: D

Explanation:
When a user creates an EBS volume, the user can attach it to a running instance. The user can attach
multiple volumes to the same instance and stripe them together to increase the I/O. The user can take a
snapshot from the existing volume but cannot create an AMI from the volume. However, the user can
create an AMI from a snapshot.
Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/EBSVolumes.html

NEW QUESTION # 39
A Developer needs temporary access to resources in a second account.
What is the MOST secure way to achieve this?

A. Create a cross-account access role, and use sts:AssumeRole API to get short-lived credentials.
B. Establish trust, and add an SSH key for the second account to the IAM user.
C. Create a dedicated IAM access key for the second account, and send it by mail.
D. Use the Amazon Cognito user pools to get short-lived credentials for the second account.

Answer: A

Explanation:
https://docs.aws.amazon.com/IAM/latest/UserGuide/tutorial_cross-account-with-roles.html

NEW QUESTION # 40
An application takes 40 seconds to process instructions received in an Amazon SQS message.
Assuming the SQS queue is configured with the default VisibilityTimeout value, what is the BEST way, upon receiving a message, to ensure that no other instances can retrieve a message that has already been processed or is currently being processed?

A. Use the ChangeMessageVisibility API to decrease the timeout value, then use the DeleteMessage API to delete the message.
B. Use the ChangeMessageVisibility API to increase the VisibilityTimeout, then use the DeleteMessage API to delete the message.
C. Use the DeleteMessage API call to delete the message from the queue, then call DeleteQueue API to remove the queue.
D. Use the DeleteMessageVisibility API to cancel the VisibilityTimeout, then use the DeleteMessage API to delete the message.

Answer: B

Explanation:
https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-visibility-timeout.html
In SQS, messages remain there. It is the consumer's responsibility to delete it, once consumed and processed.

NEW QUESTION # 41
An application is designed to use Amazon SQS to manage messages from many independent senders. Each sender's messages must be processed in the order they are received.
Which SQS feature should be implemented by the Developer?

A. Configure each sender with a unique MessageGroupId
B. Enable ContentBasedDeduplication on the SQS queue
C. Configure each message with unique MessageGroupIds.
D. Enable MessageDeduplicationIds on the SQS queue

Answer: A

Explanation:
Explanation
Refer AWS documentation - SQS Message Group Id
The message group ID is the tag that specifies that a message belongs to a specific message group. Messages that belong to the same message group are always processed one by one, in a strict order relative to the message group (however, messages that belong to different message groups might be processed out of order).
Option B is wrong as message deduplication ID is the token used for deduplication of sent messages. If a message with a particular message deduplication ID is sent successfully, any messages sent with the same message deduplication ID are accepted successfully but aren't delivered during the 5-minute deduplication interval.

NEW QUESTION # 42
A set of APIs are exposed to customers using the Amazon API Gateway. These APIs have caching enabled on the API Gateway. Customers have asked for an option to invalidate this cache for each of the APIs.
What action can be taken to allow API customers to invalidate the API Cache?

A. Ask customers to use AWS credentials to call the InvalidateCache API.
B. Ask customers to pass an HTTP header called Cache-Control:max-age=0.
C. Ask customers to invoke an AWS API endpoint which invalidates the cache.
D. Ask customers to add a query string parameter called "INVALIDATE_CACHE" when making an API call.

Answer: B

Explanation:
https://docs.aws.amazon.com/apigateway/latest/developerguide/api-gateway-caching.html Invalidate an API Gateway Cache Entry A client of your API can invalidate an existing cache entry and reload it from the integration endpoint for individual requests. The client must send a request that contains the Cache-Control:
max-age=0 header. The client receives the response directly from the integration endpoint instead of the cache, provided that the client is authorized to do so. This replaces the existing cache entry with the new response, which is fetched from the integration endpoint.
To grant permission for a client, attach a policy of the following format to an IAM execution role for the user.

NEW QUESTION # 43
......

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