Download AWS-Certified-Developer-Associate Exam Questions and Answers 2021

NEW QUESTION 1
AWS Elastic Beanstalk stores your application files and optionally server log files in .

• A. Amazon Storage Gateway
• B. Amazon Glacier
• C. Amazon EC2
• D. Amazon S3

Answer: D

Explanation: AWS Elastic Beanstalk stores your application files and optionally server log files in Amazon S3. If you are using the AWS Management Console, Git, the AWS Toolkit for Visual Studio, or AWS Toolkit for Eclipse, an Amazon S3 bucket will be created in your account for you and the files you upload will be automatically copied from your local client to Amazon S3. Optionally, you may configure Elastic Beanstalk to copy your server log files every hour to Amazon S3. You do this by editing the environment configuration settings.
Reference: http://docs.aws.amazon.com/elasticbeanstaIk/latest/dg/AWSHowTo.htmI

NEW QUESTION 2
You have been doing a lot of testing of your VPC Network by deliberately failing EC2 instances to test whether instances are failing over properly. Your customer who will be paying the AWS bill for all this asks you if he being charged for all these instances. You try to explain to him how the billing works on EC2 instances to the best of your knowledge. What would be an appropriate response to give to the customer
in regards to this?

• A. Billing commences when Amazon EC2 AMI instance is completely up and billing ends as soon as the instance starts to shutdown.
• B. Billing commences when Amazon EC2 initiates the boot sequence of an AMI instance and billing ends when the instance shuts down.
• C. Billing only commences only after 1 hour of uptime and billing ends when the instance terminates.
• D. Billing commences when Amazon EC2 initiates the boot sequence of an AMI instance and billing ends as soon as the instance starts to shutdown.

Answer: B

Explanation: Billing commences when Amazon EC2 initiates the boot sequence of an AMI instance. Billing ends when the instance shuts down, which could occur through a web services command, by running "shutdown -h", or through instance failure.
Reference: http://aws.amazon.com/ec2/faqs/#BiIIing

NEW QUESTION 3
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 4
In DynamoDB, a secondary index is a data structure that contains a subset of attributes from a table, along with an alternate key to support operations.

• A. None of the above
• B. Both
• C. Query
• D. Scan

Answer: C

Explanation: In DynamoDB, a secondary index is a data structure that contains a subset of attributes from a table, along with an alternate key to support Query operations.
Reference: http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Secondarylndexes.htmI

NEW QUESTION 5
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

NEW QUESTION 6
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/

NEW QUESTION 7
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 8
An orgAMzation is hosting an application as part of the free usage tier. The orgAMzation wants to create IAM users for each of its 150 employees and they may access AWS as part of free usage tier. What will you advise the orgAMzation?

• A. The IAM is not available as a part of the free usage tier
• B. Create IAM roles and give access based on role since it will not cost the user
• C. Do not create more than 100 users as it will cost the orgAMzation.
• D. Create IAM users for each employee as it does not cost

Answer: D

Explanation: IAM is a free service. You can create as many IAM users or groups as desired free of cost. Reference: http://docs.aws.amazon.com/IAM/latest/UserGuide/IAM_Introduction.htm|

NEW QUESTION 9
An online gaming site asked you if you can deploy a database that is a fast, highly scalable NoSQL database service in AWS for a new site that he wants to build. Which database should you recommend?

• A. Amazon Redshift
• B. Amazon SimpIeDB
• C. Amazon DynamoDB
• D. Amazon RDS

Answer: C

Explanation: Amazon DynamoDB is ideal for database applications that require very low latency and predictable performance at any scale but don’t need complex querying capabilities like joins or transactions. Amazon DynamoDB is a fully-managed NoSQL database service that offers high performance, predictable throughput and low cost. It is easy to set up, operate, and scale.
With Amazon DynamoDB, you can start small, specify the throughput and storage you need, and easily scale your capacity requirements on the fly. Amazon DynamoDB automatically partitions data over a
number of servers to meet your request capacity. In addition, DynamoDB automatically replicates your data synchronously across multiple Availability Zones within an AWS Region to ensure high-availability and data durability.
Reference: https://aws.amazon.com/running_databases/#dynamodb_anchor

NEW QUESTION 10
A user has launched an EBS backed Linux instance. How can a user detach the root device and attach it to another instance as a secondary volume?

• A. Unmount the root volume first and then detach it
• B. It is not possible to mount the root volume to some other instance
• C. Stop the first instance and then attach instance’s root volume as a new volume to the other instance
• D. It is not possible to mount the root device as a secondary volume on the other instance

Answer: C

Explanation: If an Amazon EBS volume is the root device of an instance, it cannot be detached unless the instance is in the stopped state.
Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-detaching-volume.html

NEW QUESTION 11
Does DynamoDB support in-place atomic updates?

• A. It is not defined
• B. Yes
• C. It does support in-place non-atomic updates
• D. No

Answer: B

Explanation: DynamoDB supports in-place atomic updates. Reference:
http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/NorkingWithItems.htmI#Working WithItems.AtomicCounters

NEW QUESTION 12
In regard to DynamoDB, can I delete local secondary indexes?

• A. Yes, if it is a primary hash key index
• B. No
• C. Yes, if it is a local secondary indexes
• D. Yes, if it is a Global secondary indexes

Answer: B

Explanation: In DynamoDB, an index cannot be modified once it is created. Reference: http://aws.amazon.com/dynamodb/faqs/#security_anchor

NEW QUESTION 13
Which of the below mentioned options is a must to have an element as a part of the IAM policy?

• A. Condition
• B. ID
• C. Statement
• D. Version

Answer: C

Explanation: The statement is the main element of the IAM policy and it is a must for a policy. Elements such as condition, version and ID are not required.
Reference: http://docs.aws.amazon.com/IAM/latest/UserGuide/AccessPoIicyLanguage_EIementDescriptions.html

NEW QUESTION 14
A user is configuring the HTTPS protocol on a front end ELB and the SSL protocol for the back-end listener in ELB. What will ELB do?

• A. It will allow you to create the configuration, but the instance will not pass the health check
• B. Receives requests on HTTPS and sends it to the back end instance on SSL
• C. It will not allow you to create this configuration
• D. It will allow you to create the configuration, but ELB will not work as expected

Answer: C

Explanation: If a user is configuring HTTPS on the front end and TCP on the back end, ELB will not allow saving these listeners and will respond with the message.
"Load Balancer protocol is an application layer protocol, but instance protocol is not. Both the Load Balancer protocol and the instance protocol should be at the same layer. Please fix."
Reference:
http://docs.aws.amazon.com/EIasticLoadBaIancing/latest/DeveIoperGuide/elb-troubleshooting.htmI

NEW QUESTION 15
A user is planning to use the AWS RDS with MySQL. Which of the below mentioned services the user is not going to pay?

• A. Data transfer
• B. RDS Cloudwatch metrics
• C. Data storage
• D. I/O requests per month

Answer: B

Explanation: RDS charges the user on a pay as you go basis. It charges the user based on the instance type, number of hours that the instance is running, data transfer, storage cost as well for the I/O requests. The monitoring is free of cost.
Reference: http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Welcome.html

NEW QUESTION 16
A user is running a webserver on EC2. The user wants to receive the SMS when the EC2 instance utilization is above the threshold limit. Which AWS services should the user configure in this case?

• A. AWS CIoudWatch + AWS SES.
• B. AWS CIoudWatch + AWS SNS.
• C. AWS CIoudWatch + AWS SQS.
• D. AWS EC2 + AWS Cloudwatc

Answer: B

Explanation: 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. In this case, the user can configure that Cloudwatch sends an alarm on when the threshold is crossed to SNS which will trigger an SMS.
Reference: http://aws.amazon.com/sns/

NEW QUESTION 17
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: B

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.

NEW QUESTION 18
A user is using an EBS backed instance. Which of the below mentioned statements is true?

• A. The user will be charged for volume and instance only when the instance is running
• B. The user will be charged for the volume even if the instance is stopped
• C. The user will be charged only for the instance running cost
• D. The user will not be charged for the volume if the instance is stopped

Answer: B

Explanation: If a user has launched an EBS backed instance, the user will be charged for the EBS volume even though the instance is in a stopped state. The instance will be charged for the EC2 hourly cost only when it is running.
Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-detaching-volume.html