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DVA-C01 Exam Questions - Online Test


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Exambible offers free demo for DVA-C01 exam. "AWS Certified Developer Associate Exam", also known as DVA-C01 exam, is a Amazon-Web-Services Certification. This set of posts, Passing the Amazon-Web-Services DVA-C01 exam, will help you answer those questions. The DVA-C01 Questions & Answers covers all the knowledge points of the real exam. 100% real Amazon-Web-Services DVA-C01 exams and revised by experts!

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NEW QUESTION 1
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

Answer: A

Explanation:
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

NEW QUESTION 2
What is the maximum size for messages stored in SQS?

  • A. 256KB
  • B. 128KB
  • C. 1024KB
  • D. 64KB

Answer: A

Explanation:
By default, SQS queues allow you to send the largest supported payload size, currently 256KB. You can choose to specify a limit on how many bytes can be sent per payload, using the lVIaximumlVIessageSize attribute of the SetQueueAttributes method.
Reference: http://aws.amazon.com/sqs/faqs/

NEW QUESTION 3
A startup s photo-sharing site is deployed in a VPC. An ELB distributes web traffic across two subnets. ELB session stickiness is configured to use the AWS-generated session cookie, with a session TTL of 5 minutes. The webserver Auto Scaling Group is configured as: min-size=4, max-size=4.
The startups preparing for a public launch, by running load-testing software installed on a single EC2 instance running in us-west-2a. After 60 minutes of load-testing, the webserver logs show:
DVA-C01 dumps exhibit
Which recommendations can help ensure load-testing HTTP requests are evenly distributed across the
four webservers? Choose 2 answers

  • A. Launch and run the load-tester EC2 instance from us-east-1 instead.
  • B. Re-configure the load-testing software to re-resolve DNS for each web request.
  • C. Use a 3rd-party load-testing service which offers globally-distributed test clients.
  • D. Configure ELB and Auto Scaling to distribute across us-west-2a and us-west-2c.
  • E. Configure ELB session stickiness to use the app-specific session cooki

Answer: BE

NEW QUESTION 4
A user has enabled the automated backup, but not specified the backup window. What will RDS do in this case?

  • A. Will throw an error on instance launch
  • B. RDS will take 3 AM — 3:30 AM as the default window
  • C. RDS assigns a random time period based on the region
  • D. Will not allow to launch a DB instance

Answer: C

Explanation:
If the user does not specify a preferred backup window while enabling an automated backup, Amazon RDS assigns a default 30-minute backup window which is selected at random from an 8-hour block of
time per region. Reference:
http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Overview.BackingUpAndRestoringAmazonR DSInstances.htmI

NEW QUESTION 5
How many types of block devices does Amazon EC2 support?

  • A. 5
  • B. 1
  • C. 2
  • D. 4

Answer: C

Explanation:
Amazon EC2 supports 2 types of block devices. Reference:
http://docs.amazonwebservices.com/AWSEC2/latest/UserGuide/block-device-mapping-concepts.html

NEW QUESTION 6
An Amazon S3 bucket, "myawsbucket" is configured with website hosting in Tokyo region, what is the region-specific website endpoint?

  • A. www.myawsbucket.ap-northeast-1.amazonaws.com
  • B. myawsbucket.s3-website-ap-northeast-I.amazonawscom
  • C. myawsbucket.amazonaws.com
  • D. myawsbucket.tokyo.amazonaws.com

Answer: B

NEW QUESTION 7
True or False: AWS CIoudFormation allows you to create Microsoft Windows stacks.

  • A. False, AWS CIoudFormation does not support Microsoft Windows.
  • B. False, Amazon doesn’t support Microsoft Windows.
  • C. False, you cannot create Windows stacks.
  • D. True

Answer: D

Explanation:
AWS CIoudFormation allows you to create Microsoft Windows stacks based on Amazon EC2 Windows Amazon Machine Images (AMIs) and provides you with the ability to install software, to use remote desktop to access your stack, and to update and configure your stack.
Reference: http://docs.aws.amazon.com/AWSCIoudFormation/latest/UserGuide/cfn-windows-stacks.html

NEW QUESTION 8
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 9
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

NEW QUESTION 10
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 11
An orgAMzation has 10000 employees. The orgAMzation wants to give restricted AWS access to each employee. How can the orgAMzation achieve this?

  • A. Create an IAM user for each employee and make them a part of the group
  • B. It is not recommended to support 10000 users with IAM
  • C. Use STS and create the users’ run time
  • D. Use Identity federation with SSO

Answer: D

Explanation:
Identity federation enables users from an existing directory to access resources within your AWS account,
making it easier to manage your users by maintaining their identities in a single place. In this case, the federated user is the only solution since AWS does not allow creating more than 5000 IAM users. Reference: http://docs.aws.amazon.com/IAM/latest/UserGuide/LimitationsOnEntities.html

NEW QUESTION 12
Regarding Amazon SQS, what happens if there is no actMty against a queue for more than 30 consecutive days?

  • A. Your account will be suspended
  • B. The queue may be deleted
  • C. Nothing
  • D. The queue will be deleted

Answer: B

Explanation:
AWS reserve the right to delete a queue if none of the following requests have been issued against the queue for more than 30 consecutive days:
SendMessage ReceiveMessage DeIeteMessage GetQueueAttributes SetQueueAttributes
You should design your application with this in mind. Reference: https://aws.amazon.com/sqs/faqs/

NEW QUESTION 13
A user is uploading archives to Glacier. The user is trying to understand key Glacier resources. Which of the below mentioned options is not a Glacier resource?

  • A. Notification configuration
  • B. Archive ID
  • C. Job
  • D. Archive

Answer: B

Explanation:
AWS Glacier has four resources. Vault and Archives are core data model concepts. Job is required to initiate download of archive. The notification configuration is required to send user notification when archive is available for download.
Reference: http://docs.aws.amazon.com/amazongIacier/latest/dev/amazon-glacier-data-model.html

NEW QUESTION 14
In regard to AWS CIoudFormation, what is a stack?

  • A. The set of AWS templates that are created and managed as a template
  • B. The set of AWS resources that are created and managed as a template
  • C. The set of AWS resources that are created and managed as a single unit
  • D. The set of AWS templates that are created and managed as a single unit

Answer: C

Explanation:
A stack is the set of AWS resources that are created and managed as a single unit when AWS C|oudFormation initiates a template.
Reference: http://docs.aws.amazon.com/AWSCIoudFormation/latest/UserGuide/concept-stack.html

NEW QUESTION 15
True or False: In DynamoDB, Scan operations are always eventually consistent.

  • A. No, scan is like Query operation
  • B. Yes
  • C. No, scan is strongly consistent by default
  • D. No, you can optionally request strongly consistent sca

Answer: B

Explanation:
In DynamoDB, Scan operations are always eventually consistent.
Reference: http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/APISummary.htmI

NEW QUESTION 16
You have a number of image files to encode. In an Amazon SQS worker queue, you create an Amazon SQS message for each file specifying the command (jpeg-encode) and the location of the file in Amazon S3. Which of the following statements best describes the functionality of Amazon SQS?

  • A. Amazon SQS is for single-threaded sending or receMng speeds.
  • B. Amazon SQS is a non-distributed queuing system.
  • C. Amazon SQS is a distributed queuing system that is optimized for horizontal scalability, not for single-threaded sending or receMng speeds.
  • D. Amazon SQS is a distributed queuing system that is optimized for vertical scalability and for single-threaded sending or receMng speeds.

Answer: C

Explanation:
Amazon SQS is a distributed queuing system that is optimized for horizontal scalability, not for
single-threaded sending or receMng speeds. A single client can send or receive Amazon SQS messages at a rate of about 5 to 50 messages per second. Higher receive performance can be achieved by requesting multiple messages (up to 10) in a single call. It may take several seconds before a message that has been to a queue is available to be received.
Reference: http://media.amazonwebservices.com/AWS_Storage_Options.pdf

NEW QUESTION 17
In relation to Amazon Simple Workflow Service (Amazon SWF),what is an "ActMty Worker"?

  • A. An indMdual task undertaken by a workflow
  • B. The automation of a business process
  • C. A piece of software that implements tasks
  • D. All answers listed are correct

Answer: C

Explanation:
In relation to Amazon Simple Workflow Service (Amazon SWF), an actMty worker is a program that receives actMty tasks, performs them, and provides results back. Which translates to a piece of software that implements tasks.
Reference: http://docs.aws.amazon.com/amazonswf/latest/developerguide/swf-dg-develop-actMty.html

NEW QUESTION 18
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 19
When you use the AWS Elastic Beanstalk console to deploy a new application .

  • A. you’II need to upload each file separately
  • B. you’II need to create each file and path
  • C. you’II need to upload a source bundle
  • D. you’II need to create each file

Answer: C

Explanation:
When you use the AWS Elastic Beanstalk console to deploy a new application or an application version, you’II need to upload a source bundle.
Reference:
http://docs.aws.amazon.com/elasticbeanstaIk/latest/dg/using-features.depIoyment.source.html

NEW QUESTION 20
A user is having access to objects of an S3 bucket which is not owned by him. If he is trying to set the objects of that bucket public, which of the below mentioned options may be a right fit for this action?

  • A. Make the bucket public with full access
  • B. Define the policy for the bucket
  • C. Provide ACL on the object
  • D. Create an IAM user with permission

Answer: C

Explanation:
An S3 object ACL is the only way to manage access to objects which are not owned by the bucket owner. An AWS account that owns the bucket can grant another AWS account permission to upload objects. The bucket owner does not own these objects. The AWS account that created the object must grant permissions using object ACLs.
Reference: http://docs.aws.amazon.com/AmazonS3/latest/dev/access-policy-alternatives-guidelines.html

NEW QUESTION 21
The AWS console for DynamoDB enables you to do all the following operations, except:

  • A. Set up alarms to monitor your tabIe's capacity usage.
  • B. Create, update, and delete tables.
  • C. Import Data from other databases or from files.
  • D. View your tabIe's top monitoring metrics on real-time graphs from CIoudWatc

Answer: C

Explanation:
The AWS console for DynamoDB enables you to do all the above operation but not Importing Data from other databases or from files and it is not possible to do it.
Reference: http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/ConsoIeDynamoDB.html

NEW QUESTION 22
Which header received at the EC2 instance identifies the port used by the client while requesting ELB?

  • A. X-Forvvarded-Proto
  • B. X-Requested-Proto
  • C. X-Forvvarded-Port
  • D. X-Requested-Port

Answer: C

Explanation:
The X-Forvvarded-Port request header helps the user identify the port used by the client while sending a request to ELB.
Reference: http://docs.aws.amazon.com/EIasticLoadBalancing/latest/DeveIoperGuide/TerminologyandKeyConcepts. html

NEW QUESTION 23
In DynamoDB, what type of HTTP response codes indicate that a problem was found with the client request sent to the service?

  • A. 5xx HTTP response code
  • B. 200 HTTP response code
  • C. 306 HTTP response code
  • D. 4xx HTTP response code

Answer: D

NEW QUESTION 24
A user is part of a group which has a policy allowing him just read only access to EC2. The user is part of another group which has full access to EC2. What happens when the user tries to launch an instance?

  • A. It will allow the user to launch the instance
  • B. It will fail since the user has just read only access
  • C. It will allow or deny based on the group under which the user has logged into EC2
  • D. It will not allow the user to add to the conflicting groups

Answer: A

Explanation:
The IAM group policy is always aggregated. In this case, if the user does not have permission for one group, but has permission for another group, he will have full access to EC2. Unless there is specific deny policy, the user will be able to access EC2.
Reference: http://docs.aws.amazon.com/IAM/latest/UserGuide/PoIiciesOverview.htmI

NEW QUESTION 25
Which of the following device names is recommended for an EBS volume that can be attached to an Amazon EC2 Instance running Windows?

  • A. xvd[a-e]
  • B. /mnt/sd[b-e]
  • C. xvd[f-p]
  • D. /dev/sda1

Answer: C

Explanation:
The xvd[f-p] is the recommended device name for EBS volumes that can be attached to the Amazon EC2 Instances running on Windows.
Reference: http://docs.aws.amazon.com/AWSEC2/latest/WindowsGuide/device_naming.html

NEW QUESTION 26
What is one key difference between an Amazon EBS-backed and an instance-store backed instance?

  • A. Virtual Private Cloud requires EBS backed instances
  • B. Amazon EBS-backed instances can be stopped and restarted
  • C. Auto scaling requires using Amazon EBS-backed instances.
  • D. Instance-store backed instances can be stopped and restarte

Answer: B

NEW QUESTION 27
Which statements about DynamoDB are true? Choose 2 answers

  • A. DynamoDB uses a pessimistic locking model
  • B. DynamoDB uses optimistic concurrency control
  • C. DynamoDB uses conditional writes for consistency
  • D. DynamoDB restricts item access during reads
  • E. DynamoDB restricts item access during writes

Answer: BC

NEW QUESTION 28
What is the maximum number of tags that a user can assign to an EC2 instance?

  • A. 50
  • B. 10
  • C. 5
  • D. 25

Answer: B

Explanation:
To help manage EC2 instances as well as their usage in a better way, the user can tag the instances. The tags are metadata assigned by the user which consists of a key and a value. One resource can have a maximum of 10 tags.
Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/Using_Tags.html

NEW QUESTION 29
A user is creating an ELB with VPC. Which of the following options is available as a part of the "Add EC2 instances" page?

  • A. Select Subnet
  • B. Select IAM
  • C. Select ENI
  • D. Select VPC

Answer: A

Explanation:
When a user is launching an ELB with VPC, he/she has to select the options, such as subnet and security group before selecting the instances part of that subnet.
Reference:
http://docs.aws.amazon.com/EIasticLoadBaIancing/latest/Deve|operGuide/elb-getting-started.htmI

NEW QUESTION 30
A user has an S3 object in the US Standard region with the content "coIor=red". The user updates the object with the content as "coIor="white". If the user tries to read the value 1 minute after it was uploaded, what will S3 return?

  • A. It will return "coIor=white"
  • B. It will return "coIor=red"
  • C. It will return an error saying that the object was not found
  • D. It may return either "coIor=red" or "color=white" i.
  • E. any of the value

Answer: D

Explanation:
AWS S3 follows the eventual consistent model in the US Standard Region. Once the object is updated it
may return the new value or the old value based on whether all the content is replicated across multiple servers until it becomes consistent (eventual).
Reference: http://docs.aws.amazon.com/AmazonS3/Iatest/dev/Introduction.htmI

NEW QUESTION 31
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