AWS-Certified-Developer-Associate Amazon Exam Questions and Free Practice Test

Question 19

How can you peek at a message in Amazon SQS?

A. Log the message ID and the receipt handle for your messages and correlate them to confirm when a message has been received and deleted

B. Send the message to Amazon S3

C. You can't

D. Set up a CIoudWatch alarm to auto send you the message

Correct Answer:A
With version 2008-01-01, the PeekMessage action has been removed from Amazon SQS. This functionality was used mainly to debug small systems — specifically to confirm a message was successfully sent to the queue or deleted from the queue.
To do this with version 2008-01-01, you can log the message ID and the receipt handle for your messages and correlate them to confirm when a message has been received and deleted. Reference: https://aws.amazon.com/items/1343?externaI|D=1343

Question 20

You have an environment that consists of a public subnet using Amazon VPC and 3 instances that are running in this subnet. These three instances can successfully communicate with other hosts on the Internet. You launch a fourth instance in the same subnet, using the same AMI and security group configuration you used for the others, but find that this instance cannot be accessed from the Internet. What should you do to enable internet access?

A. Deploy a NAT instance into the public subnet.

B. Modify the routing table for the public subnet

C. Configure a publically routable IP Address In the host OS of the fourth instance.

D. Assign an Elastic IP address to the fourth instanc

Correct Answer:D

Question 21

AutoScaIing is configured with 3 AZs. Each zone has 5 instances running. If AutoScaIing wants to terminate an instance based on the policy action, which instance will it terminate first?

A. Terminate the first launched instance

B. Randomly select the instance for termination

C. Terminate the instance from the AZ which does not have a high AWS load

D. Terminate the instance from the AZ which has instances running near to the billing hour

Correct Answer:B
Before Auto Scaling selects an instance to terminate, it first identifies the Availability Zone that has more instances than the other Availability Zones used by the group. If all the Availability Zones have the same number of instances, it identifies a random Availability Zone.
Reference: http://docs.aws.amazon.com/AutoScaIing/latest/DeveIoperGuide/us-termination-policy.html

Question 22

A user has created a blank EBS volume in the US-East-1 region. The user is unable to attach the volume to a running instance in the same region. What could be the possible reason for this?

A. The instance must be in a running stat

B. It is required to stop the instance to attach volume

C. The AZ for the instance and volume are different

D. The instance is from an instance store backed AMI

E. The instance has enabled the volume attach protection

Correct Answer:B
An EBS volume provides persistent data storage. The user can attach a volume to any instance provided they are both in the same AZ. Even if they are in the same region but in a different AZ, it will not be able to attach the volume to that instance.
Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/AmazonEBS.htmI

Question 23

In AWS Elastic Beanstalk, you can update your deployed application even while it is part of a running environment. For a Java application, you can also use to update your deployed application.

A. the AWS Toolkit for Eclipse

B. the AWS Toolkit for Visual Studio

C. the AWS Toolkit for JVM

D. the AWS Toolkit for Netbeans

Correct Answer:A
In AWS Elastic Beanstalk, you can update your deployed application, even while it is part of a running environment. For a Java application, you can also use the AWS Toolkit for Eclipse to update your deployed application.
Reference: http://docs.aws.amazon.com/elasticbeanstaIk/latest/dg/GettingStarted.WaIkthrough.htmI

Question 24

The AWS console for DynamoDB enables you to do all the following operations, except:

A. Set up alarms to monitor your tabIe's capacity usage.

B. Create, update, and delete tables.

C. Import Data from other databases or from files.

D. View your tabIe's top monitoring metrics on real-time graphs from CIoudWatc

Correct Answer:C
The AWS console for DynamoDB enables you to do all the above operation but not Importing Data from other databases or from files and it is not possible to do it.
Reference: http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/ConsoIeDynamoDB.html

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