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Amazon DVA-C01 Practice Test - Questions Answers, Page 6

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Question 51

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What item operation allows the retrieval of multiple items from a DynamoDB table in a single API call?

GetItem
GetItem
BatchGetItem
BatchGetItem
GetMultipleItems
GetMultipleItems
GetItemRange
GetItemRange
Suggested answer: B

Explanation:

https://docs.aws.amazon.com/amazondynamodb/latest/APIReference/API_BatchGetItem.html

asked 16/09/2024
Karlis Priede
34 questions

Question 52

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After launching an instance that you intend to serve as a NAT (Network Address Translation) device in a public subnet you modify your route tables to have the NAT device be the target of internet bound traffic of your private subnet. When you try and make an outbound connection to the Internet from an instance in the private subnet, you are not successful. Which of the following steps could resolve the issue?

Attaching a second Elastic Network interface (ENI) to the NAT instance, and placing it in the private subnet
Attaching a second Elastic Network interface (ENI) to the NAT instance, and placing it in the private subnet
Attaching a second Elastic Network Interface (ENI) to the instance in the private subnet, and placing it in the public subnet
Attaching a second Elastic Network Interface (ENI) to the instance in the private subnet, and placing it in the public subnet
Disabling the Source/Destination Check attribute on the NAT instance
Disabling the Source/Destination Check attribute on the NAT instance
Attaching an Elastic IP address to the instance in the private subnet
Attaching an Elastic IP address to the instance in the private subnet
Suggested answer: C

Explanation:

https://docs.aws.amazon.com/vpc/latest/userguide/VPC_NAT_Instance.html#NATInstance

asked 16/09/2024
aaron black
34 questions

Question 53

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You attempt to store an object in the US-STANDARD region in Amazon S3, and receive a confirmation that it has been successfully stored. You then immediately make another API call and attempt to read this object. S3 tells you that the object does not exist What could explain this behavior?

US-STANDARD uses eventual consistency and it can take time for an object to be readable in a bucket
US-STANDARD uses eventual consistency and it can take time for an object to be readable in a bucket
Objects in Amazon S3 do not become visible until they are replicated to a second region.
Objects in Amazon S3 do not become visible until they are replicated to a second region.
US-STANDARD imposes a 1 second delay before new objects are readable.
US-STANDARD imposes a 1 second delay before new objects are readable.
You exceeded the bucket object limit, and once this limit is raised the object will be visible.
You exceeded the bucket object limit, and once this limit is raised the object will be visible.
Suggested answer: A

Explanation:

https://acloud.guru/forums/aws-certified-developer-associate/discussion/-KGngHzVQ03OpeAA9jSP/i-cant-answer-a-sample-question-pretty-worried-about-the-real-thing https://acloud.guru/forums/aws-certified-developer-associate/discussion/-K5WKXRAlJdOu58GREF_/s3-question

asked 16/09/2024
Lucie Loisel
39 questions

Question 54

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What is the maximum number of S3 Buckets available per AWS account?

100 per region
100 per region
there is no limit
there is no limit
100 per account
100 per account
500 per account
500 per account
100 per IAM user
100 per IAM user
Suggested answer: C

Explanation:

https://docs.aws.amazon.com/AmazonS3/latest/dev/BucketRestrictions.html

asked 16/09/2024
Jari Tetteroo
38 questions

Question 55

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Which of the following items are required to allow an application deployed on an EC2 instance to write data to a DynamoDB table? Assume that no security Keys are allowed to be stored on the EC2 instance. Choose 2 answers

Create an IAM User that allows write access to the DynamoDB table.
Create an IAM User that allows write access to the DynamoDB table.
Add an IAM Role to a running EC2 instance.
Add an IAM Role to a running EC2 instance.
Add an IAM User to a running EC2 Instance.
Add an IAM User to a running EC2 Instance.
Launch an EC2 Instance with the IAM Role included in the launch configuration.
Launch an EC2 Instance with the IAM Role included in the launch configuration.
Create an IAM Role that allows write access to the DynamoDB table.
Create an IAM Role that allows write access to the DynamoDB table.
Launch an EC2 Instance with the IAM User included in the launch configuration.
Launch an EC2 Instance with the IAM User included in the launch configuration.
Suggested answer: B, E

Explanation:

https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/iam-roles-for-amazon-ec2.html#attachiam-role

asked 16/09/2024
Nenad Celikovic
38 questions

Question 56

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A Developer created a dashboard for an application using Amazon API Gateway, Amazon S3, AWS Lambda, and Amazon RDS. The Developer needs an authentication mechanism allowing a user to sign in and view the dashboard. It must be accessible from mobile applications, desktops, and tablets, and must remember user preferences across platforms. Which AWS service should the Developer use to support this authentication scenario?

AWS KMS
AWS KMS
Amazon Cognito
Amazon Cognito
AWS Directory Service
AWS Directory Service
Amazon IAM
Amazon IAM
Suggested answer: B

Explanation:

Congito user pool provides sign up and sign in functionality along with identity pool which provides temp credentials for using aws services.

asked 16/09/2024
Ana Santos
40 questions

Question 57

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A Developer has created an S3 bucket s3://mycoolapp and has enabled server across logging that points to the folder s3://mycoolapp/logs. The Developer moved 100 KB of Cascading Style Sheets (CSS) documents to the folder s3://mycoolapp/css, and then stopped work. When the developer came back a few days later, the bucket was 50 GB. What is the MOST likely cause of this situation?

The CSS files were not compressed and S3 versioning was enabled.
The CSS files were not compressed and S3 versioning was enabled.
S3 replication was enabled on the bucket.
S3 replication was enabled on the bucket.
Logging into the same bucket caused exponential log growth.
Logging into the same bucket caused exponential log growth.
An S3 lifecycle policy has moved the entire CSS file to S3 Infrequent Access.
An S3 lifecycle policy has moved the entire CSS file to S3 Infrequent Access.
Suggested answer: C

Explanation:

Refer AWS documentation - S3 Server logs

To turn on log delivery, you provide the following logging configuration information:

The name of the target bucket where you want Amazon S3 to save the access logs as objects. You can have logs delivered to any bucket that you own that is in the same Region as the source bucket, including the source bucket itself.We recommend that you save access logs in a different bucket so that you can easily manage the logs. If you choose to save access logs in the source bucket, we recommend that you specify a prefix for all log object keys so that the object names begin with a common string and the log objects are easier to identify.When your source bucket and target bucket are the same bucket, additional logs are created for the logs that are written to the bucket. This behavior might not be ideal for your use case because it could result in a small increase in your storage billing. In addition, the extra logs about logs might make it harder to find the log that you're looking for.

asked 16/09/2024
Chan Park
36 questions

Question 58

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A Developer is creating an Auto Scaling group whose instances need to publish a custom metric to Amazon CloudWatch. Which method would be the MOST secure way to authenticate a CloudWatch PUT request?

Create an IAM user with PutMetricData permission and put the user credentials in a private repository; have applications pull the credentials as needed.
Create an IAM user with PutMetricData permission and put the user credentials in a private repository; have applications pull the credentials as needed.
Create an IAM user with PutMetricData permission, and modify the Auto Scaling launch configuration to inject the user credentials into the instance user data.
Create an IAM user with PutMetricData permission, and modify the Auto Scaling launch configuration to inject the user credentials into the instance user data.
Modify the CloudWatch metric policies to allow the PutMetricData permission to instances from the Auto Scaling group.
Modify the CloudWatch metric policies to allow the PutMetricData permission to instances from the Auto Scaling group.
Create an IAM role with PutMetricData permission and modify the Auto Scaling launching configuration to launch instances using that role.
Create an IAM role with PutMetricData permission and modify the Auto Scaling launching configuration to launch instances using that role.
Suggested answer: D
asked 16/09/2024
Jucelino Pinheiro de Andrade da Silva
42 questions

Question 59

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A Developer is working on an application that tracks hundreds of millions of product reviews in an Amazon DynamoDB table. The records include the data elements shown in the table:

Amazon DVA-C01 image Question 59 3817 09162024005626000000

Which field, when used as the partition key, would result in the MOST consistent performance using DynamoDB?

starRating
starRating
reviewID
reviewID
comment
comment
productID
productID
Suggested answer: B
asked 16/09/2024
Kevin Zander
32 questions

Question 60

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A Developer has written a serverless application using multiple AWS services. The business logic is written as a Lambda function which has dependencies on third-party libraries. The Lambda function endpoints will be exposed using Amazon API Gateway. The Lambda function will write the information to Amazon DynamoDB.

The Developer is ready to deploy the application but must have the ability to rollback. How can this deployment be automated, based on these requirements?

Deploy using Amazon Lambda API operations to create the Lambda function by providing a deployment package.
Deploy using Amazon Lambda API operations to create the Lambda function by providing a deployment package.
Use an AWS CloudFormation template and use CloudFormation syntax to define the Lambda function resource in the template.
Use an AWS CloudFormation template and use CloudFormation syntax to define the Lambda function resource in the template.
Use syntax conforming to the Serverless Application Model in the AWS CloudFormation template to define the Lambda function resource.
Use syntax conforming to the Serverless Application Model in the AWS CloudFormation template to define the Lambda function resource.
Create a bash script which uses AWS CLI to package and deploy the application.
Create a bash script which uses AWS CLI to package and deploy the application.
Suggested answer: C

Explanation:

Refer AWS documentation - SAM Gradual Code Deployment

If you use AWS SAM to create your serverless application, it comes built-in with AWS CodeDeploy to help ensure safe Lambda deployments. With just a few lines of configuration, AWS SAM does the following for you:

Deploys new versions of your Lambda function, and automatically creates aliases that point to the new version. Gradually shifts customer traffic to the new version until you're satisfied that it's working as expected, or you roll back the update. Defines pre-traffic and post-traffic test functions to verify that the newly deployed code is configured correctly and your application operates as expected. Rolls back the deployment if CloudWatch alarms are triggered.

asked 16/09/2024
Narender B
31 questions
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