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

Question 37

A user has setup an application on EC2 which uses the IAM user access key and secret access key to make secure calls to S3. The user wants to temporarily stop the access to S3 for that IAM user. What should the root owner do?

A. Delete the IAM user

B. Change the access key and secret access key for the users

C. Disable the access keys for the IAM user

D. Stop the instance

Correct Answer:C
If the user wants to temporarily stop the access to S3 the best solution is to disable the keys. Deleting the user will result in a loss of all the credentials and the app will not be useful in the future. If the user stops the instance IAM users can still access S3. The change of the key does not help either as they are still active. The best possible solution is to disable the keys.
Reference: http://docs.aws.amazon.com/IAM/latest/UserGuide/NIanagingCredentia|s.html

Question 38

An application stores payroll information nightly in DynamoDB for a large number of employees across hundreds of offices. Item attributes consist of indMdual name, office identifier, and cumulative daily hours. Managers run reports for ranges of names working in their office. One query is. "Return all Items in this office for names starting with A through E". Which table configuration will result in the lowest impact on provisioned throughput for this query?

A. Configure the table to have a hash index on the name attribute, and a range index on the office identifier

B. Configure the table to have a range index on the name attribute, and a hash index on the office identifier

C. Configure a hash index on the name attribute and no range index

D. Configure a hash index on the office Identifier attribute and no range index

Correct Answer:B

Question 39

Can a user associate and use his own DNS with ELB instead ofthe DNS provided by AWS ELB?

A. Yes, by creating a CNAME with the existing domain name provider

B. Yes, by configuring DNS in the AWS Console

C. No

D. Yes, only through Route 53 by mapping ELB and DNS

Correct Answer:A
The AWS ELB allows mapping a custom domain name with ELB. The user can map ELB with DNS in two ways: 1) By creating CNAME with the existing domain name service provider or 2) By creating a record with Route 53.
Reference:
http://docs.aws.amazon.com/E|asticLoadBaIancing/latest/DeveIoperGuide/using-domain-names-with-elb. html

Question 40

How can software determine the public and private IP addresses of the Amazon EC2 instance that it is running on?

A. Query the appropriate Amazon CIoudWatch metric.

B. Use ipconfig or ifconfig command.

C. Query the local instance userdata.

D. Query the local instance metadat

Correct Answer:D

Question 41

In DynamoDB, the default table size is:

A. 5 GB

B. 1 GB

C. 10 GB

D. There is no table size

Correct Answer:D
DynamoDB has seamless scalability with no table size limits and unlimited storage, so you shouIdn't be worried about managing storage on the host or to provisioning more drive, as your data requirement changes.
Reference: http://aws.amazon.com/dynamodb/

Question 42

A user is planning to host a mobile game on EC2 which sends notifications to active users on either high score or the addition of new features. The user should get this notification when he is online on his mobile device. Which of the below mentioned AWS services can help achieve this functionality?

A. AWS Simple Notification Service.

B. AWS Simple Queue Service.

C. AWS Mobile Communication Service.

D. AWS Simple Email Servic

Correct Answer:A
Amazon Simple Notification Service (Amazon SNS) is a fast, filexible, and fully managed push messaging service. Amazon SNS makes it simple and cost-effective to push to mobile devices, such as iPhone, iPad, Android, Kindle Fire, and internet connected smart devices, as well as pushing to other distributed services.
Reference: http://aws.amazon.com/sns

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