Amazon AWS-Certified-Developer-Associate ExamAmazon AWS Certified Developer Associate

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Q1. Regarding Amazon SNS, when you want to subscribe to a topic and receive notifications to your email, in the Protocol drop-down box, you should select .

A. Email

B. Message

C. SMTP

D. IMAP

Answer:

Explanation:

In Amazon SNS, when you want to subscribe to a topic and receive notifications to your email, select Email in the Protocol drop-down box. Enter an email address you can use to receive the notification in the Endpoint field.

Reference:      http://docs.aws.amazon.com/sns/latest/dg/SubscribeTopic.html


Q2. A user had defined an IAM policy similar to the one given below on a bucket:

{

"Version": "2012-10-17",

"Statement": [{

"Effect": "A||ow",

"PrincipaI": {

"AWS": "arn:aws:iam::12112112:user/test"

}!

"Action": [ "s3:GetBucketLocation", "s3:ListBucket", "s3:GetObject"

]!

"Resource": [ "arn:aws:s3:::examkiI|er"

}

}

What will this do?

A. It will result in an error saying invalid policy statement

B. It will create an IAM policy for the user test

C. Allows the user test of the AWS account ID 12112112 to perform GetBucketLocation, ListBucket and GetObject on the bucket examkiller

D. It will allow all the IAM users of the account ID 12112112 to perform GetBucketLocation, ListBucket and GetObject on bucket examkiller

Answer:

Explanation:

The IAM policy allows to test a user in the account 12112112 to perform: s3:GetBucketLocation

s3:ListBucket s3:GetObject

Amazon S3 permissions on the examkiller bucket.

Reference:        http://docs.aws.amazon.com/AmazonS3/Iatest/dev/access-policy-language-overview.html


Q3. A user has developed an application which is required to send the data to a NoSQL database. The user wants to decouple the data sending such that the application keeps processing and sending data but

does not wait for an acknowledgement of DB. Which of the below mentioned applications helps in this scenario?

A. AWS Simple Notification Service

B. AWS Simple Workflow

C. AWS Simple Query Service

D. AWS Simple Queue Service 

Answer: D

Explanation:

Amazon Simple Queue Service (SQS) is a fast, reliable, scalable, and fully managed message queuing service. SQS provides a simple and cost-effective way to decouple the components of an application. In this case, the user can use AWS SQS to send messages which are received from an application and sent  to DB. The application can continue processing data without waiting for any acknowledgement from DB. The user can use SQS to transmit any volume of data without losing messages or requiring other services to always be available.

Reference: http://aws.amazon.com/sqs/


Q4. 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


Q5. 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 Service. 

Answer: A

Explanation:

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


Q6. A user has launched an EC2 instance and installed a website with the Apache webserver. The webserver is running but the user is not able to access the website from the internet. What can be the possible reason for this failure?

A. The security group of the instance is not configured properly.

B. The instance is not configured with the proper key-pairs.

C. The Apache website cannot be accessed from the internet.

D. Instance is not configured with an elastic IP. 

Answer: A

Explanation:

In Amazon Web Services, when a user has configured an instance with Apache, the user needs to ensure that the ports in the security group are opened as configured in Apache config. E.g. If Apache is running on port 80, the user should open port 80 in the security group.

Reference:        http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-network-security.html


Q7. A user has configured ELB. Which of the below mentioned protocols the user can configure for ELB health checks while setting up ELB?

A. All of the options

B. TCP

C. HTTPS

D. SSL

Answer:

Explanation:

An ELB performs a health check on its instances to ensure that it diverts traffic only to healthy instances. The ELB can perform a health check on HTTP, HTTPS, TCP and SSL protocols.

Reference:        http://docs.aws.amazon.com/EIasticLoadBaIancing/latest/Deve|operGuide/Welcome.html


Q8. A user has created a queue named "myqueue" with SQS. There are four messages published to queue which are not received by the consumer yet. If the user tries to delete the queue, what will happen?

A. A user can never delete a queue manually. AWS deletes it after 30 days of inactMty on queue

B. It will initiate the delete but wait for four days before deleting until all messages are deleted automatically.

C. It will ask user to delete the messages first

D. It will delete the queue 

Answer: D

Explanation:

SQS allows the user to move data between distributed components of applications so they can perform different tasks without losing messages or requiring each component to be always available. The user can delete a queue at any time, whether it is empty or not. It is important to note that queues retain

messages for a set period of time. By default, a queue retains messages for four days. Reference:

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


Q9. A user is planning to host MS SQL on an EBS volume. It was recommended to use the AWS RDS. What advantages will the user have if he uses RDS in comparison to an EBS based DB?

A. Better throughput with PIOPS

B. Automated backup

C. NIS SQL is not supported with RDS

D. High availability with multi AZs 

Answer: B

Explanation:

Comparing with on-premises or EC2 based NIS SQL, RDS provides an automated backup feature. PIOPS is available with both RDS and EBS. However, HA is not available with NIS SQL.

Reference: https://aws.amazon.com/rds/faqs/


Q10. When using Amazon SQS how much data can you store in a message?

A. 8 KB

B. 2 KB

C. 16 KB

D. 4 KB

Answer:

Explanation:

With Amazon SQS version 2008-01-01, the maximum message size for both SOAP and Query requests is 8KB.

If you need to send messages to the queue that are larger than 8 KB, AWS recommends that you split the information into separate messages. Alternatively, you could use Amazon S3 or Amazon Simp|eDB to hold the information and include the pointer to that information in the Amazon SQS message.

If you send a message that is larger than 8KB to the queue, you will receive a MessageTooLong error with HTTP code 400.

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


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