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Q31. You are building an online store on AWS that uses SQS to process your customer orders. Your backend system needs those messages in the same sequence the customer orders have been put in. How can

you achieve that?

A. You can do this with SQS but you also need to use SWF

B. Messages will arrive in the same order by default

C. You can use sequencing information on each message

D. It is not possible to do this with SQS 

Answer: C

Explanation:

Amazon SQS is engineered to always be available and deliver messages. One of the resulting tradeoffs is that SQS does not guarantee first in, first out delivery of messages. For many distributed applications, each message can stand on its own, and as long as all messages are delivered, the order is not important. If your system requires that order be preserved, you can place sequencing information in each message,

so that you can reorder the messages when the queue returns them. Reference:

http://docs.aws.amazon.com/AWSSimpIeQueueService/latest/SQSDeveIoperGuide/\\NeIcome.html

Q32. The user has created multiple AutoScaIing groups. The user is trying to create a new AS group but it fails. How can the user know that he has reached the AS group limit specified by AutoScaIing in that region?

A. Run the command: as-describe-account-limits

B. Run the command: as-describe-group-limits

C. Run the command: as-max-account-limits

D. Run the command: as-list-account-limits 

Answer: A

Explanation:

A user can see the number of AutoScaIing resources currently allowed for the AWS account either by using the as-describe-account-Iimits command or by calling the DescribeAccountLimits action. Reference:http://docs.aws.amazon.com/AutoScaIing/latest/DeveIoperGuide/ts-as-capacity.html

Q33. You are using Amazon SQS and are getting a "Queue Deleted RecentIy" error. What is wrong?

A. The message is too big

B. You have incorrect permissions

C. Another user has deleted the queue

D. If you delete a queue, you need to wait for at least 60 seconds before creating a queue with the same name

Answer:

Explanation:

If you delete a queue, you need to wait for at least 60 seconds before creating a queue with the same name. Please note that when you delete a queue, the deletion process takes up to 60 seconds. Requests you send to a recently deleted queue might succeed during the 60-second period. For example, a SendlVIessage request might succeed, but after 60 seconds the queue and that message you sent no longer exists.

Reference: https://aws.amazon.com/items/1343?externaI|D=1343

Q34. A user is creating multiple IAM users. What advice should be given to him to enhance the security?

A. Grant least prMleges to the indMdual user

B. Grant all higher prMleges to the group

C. Grant less prMleges for user, but higher prMleges for the group

D. Grant more prMleges to the user, but least prMleges to the group 

Answer: A

Explanation:

It is a recommended rule that the root user should grant the least prMleges to the IAM user or the group. The higher the prMleges, the more problems it can create.

Reference:       http://docs.aws.amazon.com/IAM/latest/UserGuide/IAMBestPractices.htmI

Q35. A user is setting up an Elastic Load BaIancer(ELB). Which of the below parameters should the user consider so as the instance gets registered with the ELB?

A. ELB DNS

B. IP address

C. Security group

D. ELB IP

Answer:

Explanation:

The EC2 instances are registered with the load balancer using the IP addresses associated with the instances. When an instance is stopped and then started, the IP address associated with the instance changes. This prevents the load balancer from routing traffic to the restarted instance. When the user stops and then starts registered EC2 instances, it is recommended that to de-register the stopped instance from load balancer, and then register the restarted instance. Failure to do so may prevent the load balancer from performing health checks and routing the traffic to the restarted instance.

Q36. A user is trying to create a policy for an IAM user from the AWS console. Which of the below mentioned options is not available to the user while configuring policy?

A. Use policy generator to create policy

B. Use custom policy to create policy

C. Use policy simulator to create policy

D. Assign No permission 

Answer: C

Explanation:

When a user is trying to create a policy from the AWS console, it will have options such as create policy from templates or use a policy generator. The user can also define a custom policy or chose the option to have no permission. The policy simulator is not available in the console.

Reference:       http://docs.aws.amazon.com/IAM/latest/UserGuide/IAMBestPractices.html

Q37. Regarding Amazon SNS, you can send notification messages to mobile devices through any of the following supported push notification services, EXCEPT:

A. Google Cloud Messaging for Android (GCM)

B. Apple Push Notification Service (APNS)

C. Amazon Device Messaging (ADM)

D. Microsoft Windows Mobile Messaging (MWMM) 

Answer: D

Explanation:

In Amazon SNS, you have the ability to send notification messages directly to apps on mobile devices. Notification messages sent to a mobile endpoint can appear in the mobile app as message alerts, badge updates, or even sound alerts. Microsoft Windows MobiIe Messaging (MWMM) doesn’t exist and is not supported by Amazon SNS.

Reference:      http://docs.aws.amazon.com/sns/latest/dg/SNSMobiIePush.htmI

Q38. What kind of service is provided by AWS DynamoDB?

A. Relational Database

B. NoSQL Database

C. Dynamic Database

D. Document Database 

Answer: B

Explanation:

DynamoDB is a fast, fully managed NoSQL database service. Reference: http://aws.amazon.com/dynamodb/

Q39. You need to develop and run some new applications on AWS and you know that Elastic Beanstalk and CIoudFormation can both help as a deployment mechAMsm for a broad range of AWS resources. Which of the following statements best describes the differences between Elastic Beanstalk and C|oudFormation?

A. Elastic Beanstalk uses Elastic load balancing and CIoudFormation doesn't.

B. CIoudFormation is faster in deploying applications than Elastic Beanstalk.

C. CIoudFormation is much more powerful than Elastic Beanstalk, because you can actually design and script custom resources

D. Elastic Beanstalk is faster in deploying applications than C|oudFormation. 

Answer: C

Explanation:

These services are designed to complement each other. AWS Elastic Beanstalk provides an environment to easily develop and run applications in the cloud. It is integrated with developer tools and provides a one-stop experience for you to manage the lifecycle of your applications. AWS CIoudFormation is a convenient deployment mechAMsm for a broad range of AWS resources. It supports the infrastructure needs of many different types of applications such as existing enterprise applications, legacy applications, applications built using a variety of AWS resources and container-based solutions (including those built using AWS Elastic Beanstalk).

AWS CIoudFormation introduces two new concepts: The template, a JSON-format, text-based file that describes all the AWS resources you need to deploy to run your application and the stack, the set of AWS resources that are created and managed as a single unit when AWS CIoudFormation instantiates a template.

Reference: http://aws.amazon.com/c|oudformation/faqs/

Q40. A user has created a new raw EBS volume. The user mounts the volume on the instance to which it is attached. Which of the below mentioned options is a required step before the user can mount the volume?

A. Run a cyclic check on the device for data consistency

B. Create a file system of the volume

C. No step is required. The user can directly mount the device

D. Resize the volume as per the original snapshot size 

Answer: B

Explanation:

When a user is trying to mount a blank EBS volume, it is required that the user first creates a file system within the volume.

Reference:       http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-using-volumes.htmI