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Amazon DVA-C01 Practice Test - Questions Answers, Page 37

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You are writing to a DynamoDB table and receive the following exception:" ProvisionedThroughputExceededException". though according to your Cloudwatch metrics for the table, you are not exceeding your provisioned throughput. What could be an explanation for this?
During non-peak hours, a Developer wants to minimize the execution time of a full Amazon DynamoDB table scan without affecting normal workloads. The workloads average half of the strongly consistent read capacity units during non-peak hours. How would the Developer optimize this scan?
You are providing AWS consulting services for a company developing a new mobile application that will be leveraging Amazon SNS Mobile Push for push notifications. In order to send direct notification messages to individual devices each device registration identifier or token needs to be registered with SNS; however the developers are not sure of the best way to do this. You advise them to:
A company is migrating a web application from on premises to AWS. The company needs to move session storage from the application code to a shared service as part of the migration. The session storage data must be encrypted at rest. Which AWS services meet these requirements? (Choose two.)
A developer runs an application that uses an Amazon API Gateway REST API. The developer needs to implement a solution to proactively monitor the health of both API responses and latencies in case a deployment causes a service disruption despite passing deployment pipeline tests. The solution also must check for endpoint vulnerability and unauthorized changes to APIs. URLs, and website content. Which solution will meet these requirements?
A developer has written the following 1AM policy to provide access to an Amazon S3 bucket: Which access does the policy allow regarding the s3:GetObject and s3:PutObject actions'?
Which of the following are correct statements with policy evaluation logic in AWS Identity and Access Management? Choose 2 answers
An application stores payroll information nightly in DynamoDB for a large number of employees across hundreds of offices. Item attributes consist of individual name, office identifier, and cumulative daily hours. Managers run reports for ranges of names working in their office. One query is. "Return all Items in this office for names starting with A through E". Which table configuration will result in the lowest impact on provisioned throughput for this query?
Games-R-Us is launching a new game app for mobile devices. Users will log into the game using their existing Facebook account and the game will record player data and scoring information directly to a DynamoDB table. What is the most secure approach for signing requests to the DynamoDB API?
A developer is integrating Amazon ElastiCache in an application. The cache will store data from a database. The cached data must populate real-time dashboards. Which caching strategy will meet these requirements?

Question 361

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A developer converted an existing program to an AWS Lambda function in the console. The program runs properly on a local laptop, but shows an "Unable to import module" error when tested in the Lambda console Which of the following can fix the error?

A.
Install the missing module and specify the current directory as the target Create a ZIP file to include all files under the current directory, and upload the ZIP file.
A.
Install the missing module and specify the current directory as the target Create a ZIP file to include all files under the current directory, and upload the ZIP file.
Answers
B.
Install the missing module in a lib directory Create a ZIP file to include all files under the lib directory, and upload the ZIP file as a dependency file
B.
Install the missing module in a lib directory Create a ZIP file to include all files under the lib directory, and upload the ZIP file as a dependency file
Answers
C.
In the Lambda code invoke a Linux command to install the missing modules under the /usr/lib directory
C.
In the Lambda code invoke a Linux command to install the missing modules under the /usr/lib directory
Answers
D.
In the Lambda console, create a LD_LIBRARY_PATH environment and specify the value for the system library path.
D.
In the Lambda console, create a LD_LIBRARY_PATH environment and specify the value for the system library path.
Answers
Suggested answer: C

Question 362

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A developer must allow guest users without logins to access an Amazon Cognito-enabled site to view files stored within an Amazon S3 bucket How should the developer meet these requirements'?

A.
Create a blank user ID in a user pool, add to the user group, and grant access to AWS resources
A.
Create a blank user ID in a user pool, add to the user group, and grant access to AWS resources
Answers
B.
Create a new identity pool, enable access to unauthenticated identities and grant access to AWS resources
B.
Create a new identity pool, enable access to unauthenticated identities and grant access to AWS resources
Answers
C.
Create a new user pool, enable access to unauthenticated identities, and grant access to AWS resources.
C.
Create a new user pool, enable access to unauthenticated identities, and grant access to AWS resources.
Answers
D.
Create a new user pool disable authentication access, and grant access to AWS resources
D.
Create a new user pool disable authentication access, and grant access to AWS resources
Answers
Suggested answer: C

Question 363

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A developer has written an AWS Lambda function using Java as the runtime environment. The developer wants to isolate a performance bottleneck in the code. Which steps should be taken to reveal the bottleneck?

A.
Use the Amazon CloudWatch API to write timestamps to a custom CloudWatch metric Use the CloudWatch console to analyze the resulting data
A.
Use the Amazon CloudWatch API to write timestamps to a custom CloudWatch metric Use the CloudWatch console to analyze the resulting data
Answers
B.
Use the AWS X-Ray API to write trace data into X-Ray from strategic places within the code Use the Amazon CloudWatch console to analyze the resulting data
B.
Use the AWS X-Ray API to write trace data into X-Ray from strategic places within the code Use the Amazon CloudWatch console to analyze the resulting data
Answers
C.
Use the AWS X-Ray API to write trace data into X-Ray from strategic places within the code. Use the X-Ray console to analyze the resulting data
C.
Use the AWS X-Ray API to write trace data into X-Ray from strategic places within the code. Use the X-Ray console to analyze the resulting data
Answers
D.
Use the Amazon CloudWatch API to write timestamps to a custom CloudWatch metric Use the AWS X-Ray console to analyze the resulting data
D.
Use the Amazon CloudWatch API to write timestamps to a custom CloudWatch metric Use the AWS X-Ray console to analyze the resulting data
Answers
Suggested answer: C

Question 364

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A developer wants to insert a record into an Amazon DynamoDB table as soon as a new file is added to an Amazon S3 bucket. Which set of steps would be necessary to achieve this?

A.
Create an event with Amazon CloudWatch Events that will monitor the S3 bucket and then insert the records into DynamoDB
A.
Create an event with Amazon CloudWatch Events that will monitor the S3 bucket and then insert the records into DynamoDB
Answers
B.
Configure an S3 event to invoke a Lambda function that inserts records into DynamoDB
B.
Configure an S3 event to invoke a Lambda function that inserts records into DynamoDB
Answers
C.
Create a Lambda function that will poll the S3 bucket and then insert the records into DynamoDB.
C.
Create a Lambda function that will poll the S3 bucket and then insert the records into DynamoDB.
Answers
D.
Create a cron job that will run at a scheduled time and insert the records into DynamoDB
D.
Create a cron job that will run at a scheduled time and insert the records into DynamoDB
Answers
Suggested answer: B

Question 365

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A developer is leveraging a Border Gateway Protocol (BGP)-based AWS VPN connection to connect from on-premises to Amazon EC2 instances in the developer's account The developer is able to access an EC2 instance in subnet A, but is unable to access an EC2 instance in subnet B in the same VPC Which logs can the developer use to verify whether the traffic is reaching subnet B?

A.
VPN logs
A.
VPN logs
Answers
B.
BGP logs
B.
BGP logs
Answers
C.
VPC Flow Logs
C.
VPC Flow Logs
Answers
D.
AWS CloudTrail logs
D.
AWS CloudTrail logs
Answers
Suggested answer: C

Question 366

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A developer is writing an AWS Lambda function. The developer wants to log key events that occur during the Lambda function and include a unique identifier to associate the events with a specific function invocation. Which of the following will help the developer accomplish this objective?

A.
Obtain the request identifier from the Lambda context object Architect the application to write logs to the console.
A.
Obtain the request identifier from the Lambda context object Architect the application to write logs to the console.
Answers
B.
Obtain the request identifier from the Lambda event object Architect the application to write logs to a file
B.
Obtain the request identifier from the Lambda event object Architect the application to write logs to a file
Answers
C.
Obtain the request identifier from the Lambda event object Architect the application to write logs to the console
C.
Obtain the request identifier from the Lambda event object Architect the application to write logs to the console
Answers
D.
Obtain the request identifier from the Lambda context object Architect the application to write logs to a file.
D.
Obtain the request identifier from the Lambda context object Architect the application to write logs to a file.
Answers
Suggested answer: A

Question 367

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A developer receives the following error message when trying to launch or terminate an Amazon EC2 instance using a boto3 script.

What should the developer do to correct this error message?

A.
Assign an IAM role to the EC2 instance to allow necessary API calls on behalf of the client.
A.
Assign an IAM role to the EC2 instance to allow necessary API calls on behalf of the client.
Answers
B.
Implement an exponential backoff algorithm for optimizing the number of API requests made to Amazon EC2.
B.
Implement an exponential backoff algorithm for optimizing the number of API requests made to Amazon EC2.
Answers
C.
Increase the overall network bandwidth to handle higher API request rates.
C.
Increase the overall network bandwidth to handle higher API request rates.
Answers
D.
Upgrade to the latest AWS CLI version so that boto3 can handle higher request rates
D.
Upgrade to the latest AWS CLI version so that boto3 can handle higher request rates
Answers
Suggested answer: D

Question 368

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A developer is creating a script to automate the deployment process for a serverless application. The developer wants to use an existing AWS Serverless Application Model (AWS SAM) template for the application What should the developer use for the project? (Select TWO)

A.
Callaws cloudformation package to create the deployment package Call aws cloudformation deploy to deploy the package afterward.
A.
Callaws cloudformation package to create the deployment package Call aws cloudformation deploy to deploy the package afterward.
Answers
B.
Call sam package to create the deployment package Call sam deploy to deploy the package afterward
B.
Call sam package to create the deployment package Call sam deploy to deploy the package afterward
Answers
C.
Callaws s3 cp to upload the AWS SAM template to Amazon S3 Call aws lambda update-functioncode to create the application.
C.
Callaws s3 cp to upload the AWS SAM template to Amazon S3 Call aws lambda update-functioncode to create the application.
Answers
D.
Create a ZIP package locally and call aws serverlessrepo create-applicarion to create the application.
D.
Create a ZIP package locally and call aws serverlessrepo create-applicarion to create the application.
Answers
E.
Create a ZIP package and upload it to Amazon S3 Callaws cloudfonnation create-stack to create the application
E.
Create a ZIP package and upload it to Amazon S3 Callaws cloudfonnation create-stack to create the application
Answers
Suggested answer: B, C

Question 369

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A company is running a custom application on a set of on-premises Linux servers that are accessed using Amazon API Gateway. AWS X-Ray tracing has been enabled on the API test stage How can a developer enable X-Ray tracing on the on-premises servers with the LEAST amount of configuration''

A.
Install and run the X-Ray SDK on the on-premises servers to capture and relay the data to the XRay service.
A.
Install and run the X-Ray SDK on the on-premises servers to capture and relay the data to the XRay service.
Answers
B.
Install and run the X-Ray daemon on the on-premises servers to capture and relay the data to the X-Ray service
B.
Install and run the X-Ray daemon on the on-premises servers to capture and relay the data to the X-Ray service
Answers
C.
Capture incoming requests on-premises and configure an AWS Lambda function to pull, process, and relay relevant data to X-Ray using the PutTraceSegments API call
C.
Capture incoming requests on-premises and configure an AWS Lambda function to pull, process, and relay relevant data to X-Ray using the PutTraceSegments API call
Answers
D.
Capture incoming requests on-premises and configure an AWS Lambda function to pull, process, and relay relevant data to X-Ray using the PutTelemetryRecords API call.
D.
Capture incoming requests on-premises and configure an AWS Lambda function to pull, process, and relay relevant data to X-Ray using the PutTelemetryRecords API call.
Answers
Suggested answer: B

Question 370

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A developer has created a REST API using Amazon API Gateway. The developer wants to log who and how each caller accesses the API. The developer also wants to control how long the logs are kept What should the developer do to meet these requirements?

A.
Enable API Gateway execution logging Delete old logs using API Gateway retention settings
A.
Enable API Gateway execution logging Delete old logs using API Gateway retention settings
Answers
B.
Enable API Gateway access logs Use Amazon CloudWatch retention settings to delete old logs
B.
Enable API Gateway access logs Use Amazon CloudWatch retention settings to delete old logs
Answers
C.
Enable detailed Amazon CloudWatch metrics Delete old logs with a recurring AWS Lambda function
C.
Enable detailed Amazon CloudWatch metrics Delete old logs with a recurring AWS Lambda function
Answers
D.
Create and use API Gateway usage plans. Delete old logs with a recurring AWS Lambda function.
D.
Create and use API Gateway usage plans. Delete old logs with a recurring AWS Lambda function.
Answers
Suggested answer: A
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