The Most Up-to-date Guide To DVA-C01 Testing Software

Exam Code: DVA-C01 (Practice Exam Latest Test Questions VCE PDF)
Exam Name: AWS Certified Developer Associate Exam
Certification Provider: Amazon-Web-Services
Free Today! Guaranteed Training- Pass DVA-C01 Exam.

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Total 463 questions Full Exam Access
Question 1
You are building an online store on AWS that uses SQS to process your customer orders. Your backend system needs those messages in the same sequence the customer orders have been put in. How can you achieve that?
My answer: -
Reference answer: C
Reference analysis:

Amazon SQS is engineered to always be available and deliver messages. One of the resulting tradeoffs is that SQS does not guarantee first in, first out delivery of messages. For many distributed applications, each message can stand on its own, and as long as all messages are delivered, the order is not important. If your system requires that order be preserved, you can place sequencing information in each message,
so that you can reorder the messages when the queue returns them. Reference:
http://docs.aws.amazon.com/AWSSimpIeQueueService/latest/SQSDeveIoperGuide/\NeIcome.html

Question 2
What is the maximum number of S3 Buckets available per AWS account?
My answer: -
Reference answer: C
Reference analysis:

None

Question 3
Regarding Amazon SNS, to begin using Amazon SNS mobile push notifications, you first need that uses one of the supported push notification services: APNS, GCM, or ADM.
My answer: -
Reference answer: D
Reference analysis:

In Amazon SNS, to begin using Amazon SNS mobile push notifications, you first need an app for the mobile endpoints that uses one of the supported push notification services: APNS, GCM, or ADM. After you've registered and configured the app to use one of these services, you configure Amazon SNS to send push notifications to the mobile endpoints.
Reference: http://docs.aws.amazon.com/sns/latest/dg/SNSMobiIePush.htmI

Question 4
EC2 instances are launched from Amazon Machine images (AMIS). A given public AMI can:
My answer: -
Reference answer: C
Reference analysis:

None

Question 5
A user is creating a snapshot of an EBS volume. Which of the below statements is incorrect in relation to the creation of an EBS snapshot?
My answer: -
Reference answer: C
Reference analysis:

The EBS snapshots are a point in time backup of the EBS volume. It is an incremental snapshot, but is always specific to the region and never specific to a single AZ.
Hence the statement "|t is stored in the same AZ as the volume" is incorrect.
Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/EBSSnapshots.htmI

Question 6
A user is trying to create a policy for an IAM user from the AWS console. Which of the below mentioned options is not available to the user while configuring policy?
My answer: -
Reference answer: C
Reference analysis:

When a user is trying to create a policy from the AWS console, it will have options such as create policy from templates or use a policy generator. The user can also define a custom policy or chose the option to have no permission. The policy simulator is not available in the console.
Reference: http://docs.aws.amazon.com/IAM/latest/UserGuide/IAMBestPractices.html

Question 7
You run an ad-supported photo sharing website using S3 to serve photos to visitors of your site. At some point you find out that other sites have been linking to the photos on your site, causing loss to your business.
What is an effective method to mitigate this?
My answer: -
Reference answer: B
Reference analysis:

None

Question 8
Which code snippet below returns the URL of a load balanced web site created in CIoudFormation with an AWS::EIasticLoadBaIancing::LoadBaIancer resource name "EIasticLoad BaIancer"?
My answer: -
Reference answer: B
Reference analysis:

None

Question 9
Which of the following services are included at no additional cost with the use of the AWS platform? Choose 2 answers
My answer: -
Reference answer: CE
Reference analysis:

None

Question 10
In regards to Amazon SQS how can you secure the messages in your queues?
My answer: -
Reference answer: B
Reference analysis:

Authentication mechAMsms are provided to ensure that messages stored in Amazon SQS queues are secured against unauthorized access. Only the AWS account owners can access the queues they create. Amazon SQS uses proven cryptographic methods to authenticate your identity, either through the use of your Access Key ID and request signature, or through the use of an X.509 certificate.
Reference: https://aws.amazon.com/sqs/faqs/

Question 11
When AutoScaIing is launching a new instance based on condition, which of the below mentioned policies will it follow?
My answer: -
Reference answer: C
Reference analysis:

AutoScaIing attempts to distribute instances evenly between the Availability Zones that are enabled for the user’s AutoScaIing group. Auto Scaling does this by attempting to launch new instances in the Availability Zone with the fewest instances.
Reference:http://docs.aws.amazon.com/AutoScaIing/latest/Deve|operGuide/AS_Concepts.htmI

Question 12
Which of the following are valid arguments for an SNS Publish request? Choose 3 answers
My answer: -
Reference answer: ABE
Reference analysis:

None

Question 13
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?
My answer: -
Reference answer: C
Reference analysis:

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

Question 14
A user is running a MySQL RDS instance. The user will not use the DB for the next 3 months. How can the user save costs?
My answer: -
Reference answer: C
Reference analysis:

The RDS instances unlike the AWS EBS backed instances cannot be stopped or paused. The user needs to take the final snapshot, terminate the instance and launch a new instance in the future from that snapshot
Reference: http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Overview.BackingUpAndRestoringAmazonR DSInstances.htmI

Question 15
An orgAMzation is having an application which can start and stop an EC2 instance as per schedule. The orgAMzation needs the MAC address of the instance to be registered with its software. The instance is launched in EC2-CLASSIC. How can the orgAMzation update the MAC registration every time an instance is booted?
My answer: -
Reference answer: B
Reference analysis:

AWS provides an on demand, scalable infrastructure. AWS EC2 allows the user to launch On-Demand instances. AWS does not provide a fixed MAC address to the instances launched in EC2-CLASSIC. If the instance is launched as a part of EC2-VPC, it can have an ENI which can have a fixed MAC. However, with EC2-CLASSIC, every time the instance is started or stopped it will have a new MAC address.
To get this MAC, the orgAMzation can run a script on boot which can fetch the instance metadata and get the MAC address from that instance metadata. Once the MAC is received, the orgAMzation can register that MAC with the software.
Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/AESDG-chapter-instancedata.html

Question 16
When a Simple Queue Service message triggers a task that takes 5 minutes to complete, which process below will result in successful processing of the message and remove it from the queue while minimizing the chances of duplicate processing?
My answer: -
Reference answer: A
Reference analysis:

None

Question 17
In AWS Elastic Beanstalk, if the application returns any response other than 200 ,OK or there is no response within the configured InactMtyTimeout period, .
My answer: -
Reference answer: A
Reference analysis:

In AWS Elastic Beanstalk, if the application returns any response other than 200, OK or there is no response within the configured InactMtyTimeout period, SQS once again makes the message visible in the queue and available for another attempt at processing.
Reference:
http://docs.aws.amazon.com/elasticbeanstaIk/latest/dg/using-features-managing-env-tiers.htmI#worker-e nviron

Question 18
A user has created an application which sends data to a log file. The server hosting the log files can be unavailable due to any reason. The user wants to make it so that whenever the log server is up it should be receMng the messages. Which of the below mentioned AWS services helps achieve this functionality?
My answer: -
Reference answer: D
Reference analysis:

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. The user can use SQS to transmit any volume of data without losing messages or requiring other services to always be available. Using SQS, the application has to just send the data to SQS and SQS transmits it to the log file whenever it is available.
Reference: http://aws.amazon.com/sqs/

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Total 463 questions Full Exam Access