AWS-Certified-Developer-Associate Exam - Amazon AWS Certified Developer Associate

NEW QUESTION 1
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: D

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

NEW QUESTION 2
Which EC2 API call would you use to retrieve a list of Amazon Machine Images (AMIs)?

• A. Descnbelnstances
• B. DescribeAMIs
• C. Describelmages
• D. GetAMIs
• E. You cannot retrieve a list of AMIs as there are over 10,000 AMIs

Answer: E

NEW QUESTION 3
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 manuall
• B. AWS deletes it after 30 days of inactMty on queue
• C. It will initiate the delete but wait for four days before deleting until all messages are deleted automatically.
• D. It will ask user to delete the messages first
• E. 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

NEW QUESTION 4
The user has configured AutoScaIing based on the dynamic policy. Which of the following is not the right command to specify a change in capacity as a part of the policy?

• A. "adjustment=-50" (type is PercentChangeInCapacity)
• B. "adjustment=3" (type is ExactCapacity)
• C. "adjustment=-1" (type is ChangeInCapacity)
• D. "adjustment=-8" (type is ExactCapacity)

Answer: D

Explanation: The user can configure the AutoScaIing group to automatically scale up and then scale down based on the various specified CIoudWatch monitoring conditions. The user needs to provide the adjustment value and the adjustment type. A positive adjustment value increases the current capacity and a negative adjustment value decreases the current capacity. The user can express the change to the current size as an absolute number, an increment or as a percentage of the current group size.
In this option specifying the exact capacity with the adjustment value = -8 will not work as when type is exact capacity the adjustment value cannot be negative.
Reference:
http://docs.aws.amazon.com/AutoScaling/latest/DeveIoperGuide/as-scaIe-based-on-demand.html

NEW QUESTION 5
Which of the following platforms are supported by Elastic Beanstalk? Choose 2 answers

• A. Apache Tomcat
• B. .NET
• C. IBM Websphere
• D. Oracle JBoss
• E. Jetty

Answer: AB

NEW QUESTION 6
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

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

NEW QUESTION 7
A user has setup Multi AZ with the MS SQL RDS instance. Which of the below mentioned functionalities can be achieved by the user?

• A. High availability
• B. Scalability
• C. MS SQL does not support Multi AZ
• D. Disaster recovery

Answer: C

Explanation: The Multi AZ feature allows the user to achieve High Availability. MS SQL does not support Multi AZ. Reference: https://aws.amazon.com/rds/faqs/#36

NEW QUESTION 8
When should a user try to Force Detach an EBS volume?

• A. If the volume is stuck in a detaching state
• B. If the volume is not accessible from the instance
• C. If the volume is not unmounted and the user still wants to detach
• D. If the volume is a root volume

Answer: A

Explanation: If an EBS volume stays in the detaching state, the user can force the detachment by clicking Force Detach. Forcing the detachment can lead to either data loss or a corrupted file system. The user should use this option only as a last resort to detach a volume from a failed instance or if he is detaching a volume with the intention of deleting it.
Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-detaching-volume.html

NEW QUESTION 9
A user has launched one EC2 instance in the US West region. The user wants to access the RDS instance launched in the US East region from that EC2 instance. How can the user configure the access for that EC2 instance?

• A. It is not possible to access RDS of the US East region from the US West region
• B. Open the security group of the US West region in the RDS security group’s ingress rule
• C. Configure the IP range of the US West region instance as the ingress security rule of RDS
• D. Create an IAM role which has access to RDS and launch an instance in the US West region with it

Answer: C

Explanation: The user cannot authorize an Amazon EC2 security group if it is in a different AWS Region than the RDS DB instance. The user can authorize an IP range or specify an Amazon EC2 security group in the same region that refers to an IP address in another region.
Reference: http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_WorkingWithSecurityGroups.html

NEW QUESTION 10
Bob is an IAM user who has access to the EC2 services. Admin is an IAM user who has access to all the AWS services including IAM. Can Bob change his password?

• A. No, the IAM user can never change the password
• B. Yes, provided Admin has given Bob access to change his password
• C. Yes, only from AWS CLI
• D. Yes, only from the AWS console

Answer: B

Explanation: The IAM users by default cannot change their password. The root owner or IAM administrator needs to set the policy in the password policy page, which should allow the user to change their password. Once it is enabled, the IAM user can always change their passwords from the AWS console or CLI.
Reference: http://docs.aws.amazon.com/IAM/latest/UserGuide/Using_ManagingUserPwdSeIf.htm|

NEW QUESTION 11
A user is planning to host a scalable dynamic web application on AWS. Which of the services may not be required by the user to achieve automated scalability?

• A. CIoudWatch
• B. S3
• C. AutoScaIing
• D. AWS EC2 instances

Answer: B

Explanation: The user can achieve automated scaling by launching different EC2 instances and making them a part of an ELB. Cloudwatch will be used to monitor the resources and based on the scaling need it will trigger policies. AutoScaIing is then used to scale up or down the instances.
Reference: http://docs.aws.amazon.com/AutoScaIing/latest/DeveIoperGuide/NhatIsAutoScaIing.htmI

NEW QUESTION 12
In relation to Amazon SQS, how many queues and messages can you have per queue for each user?

• A. Unlimited
• B. 10
• C. 256
• D. 500

Answer: A

Explanation: Amazon SQS supports an unlimited number of queues and unlimited number of messages per queue for each user. Please be aware that Amazon SQS automatically deletes messages that have been in the queue for more than 4 days.
Reference: https://aws.amazon.com/items/1343?externaIID=1343

NEW QUESTION 13
A user has created an RDS instance with MySQL. The user is using the HeidiSQL client to connect with the RDS DB. The client is unable to connect to DB from his home machine. What is a possible reason for the failure?

• A. The user has to open port 80 in the RDS security group to connect with RDS DNS
• B. The security group is not configured to allow a request from the user’s IP on port 3306
• C. You can never connect to RDS from your desktop
• D. The user has to open port 22 in the RDS security group to connect with RDS DNS

Answer: B

Explanation: If the user needs to connect to RDS then he has to open port 3306 in the RDS security group for his IP address.
Reference: http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Welcome.html

NEW QUESTION 14
A user is enabling logging on a particular bucket. Which of the below mentioned options may be best suitable to allow access to the log bucket?

• A. Create an IAM policy and allow log access
• B. It is not possible to enable logging on the S3 bucket
• C. Create an IAM Role which has access to the log bucket
• D. Provide ACL for the logging group

Answer: D

Explanation: The only recommended use case for the S3 bucket ACL is to grant the write permission to the Amazon S3 Log Delivery group to write access log objects to the user’s bucket.
Reference: http://docs.aws.amazon.com/AmazonS3/latest/dev/access-policy-alternatives-guidelines.html

NEW QUESTION 15
Your application is trying to upload a 6 GB file to Simple Storage Service and receive a "Your proposed upload exceeds the maximum allowed object size." error message.
What is a possible solution for this?

• A. None, Simple Storage Service objects are limited to 5 GB
• B. Use the multi-part upload API for this object
• C. Use the large object upload API for this object
• D. Contact support to increase your object size limit
• E. Upload to a different region

Answer: B

NEW QUESTION 16
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/

NEW QUESTION 17
When working with AWS CIoudFormation Templates what is the maximum number of stacks that you can create?

• A. 500
• B. 50
• C. 20
• D. 10

Answer: C

Explanation: C|oudFormation Limits
Maximum number of AWS CIoudFormation stacks that you can create is 20 stacks. Reference:
http://docs.aws.amazon.com/AWSCIoudFormation/latest/UserGuide/cloudformation-Iimits.htmI

NEW QUESTION 18
A user is planning to create a structured database in the cloud. Which of the below mentioned AWS offerings help the user achieve the goal?

• A. AWS DynamoDB
• B. AWS RDS
• C. AWS Simp|eDB
• D. AWS RSD

Answer: B

Explanation: AWS RDS is a managed database server offered by AWS, which makes it easy to set up, operate, and scale a relational database or structured data in cloud.
Reference: http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Welcome.html