AWS Certified Developer - Associate

• #201

  A Developer has been asked to make changes to the source code of an AWS Lambda function. The function is managed using an AWS CloudFormation template. The template is configured to load the source code from an Amazon S3 bucket. The Developer manually created a .ZIP file deployment package containing the changes and put the file into the correct location on Amazon S3. When the function is invoked, the code changes have not been applied. What step is required to update the function with the changes?

  • ADelete the .ZIP file on S3, and re-upload by using a different object key name.
  • BUpdate the CloudFormation stack with the correct values for the function code properties S3Bucket, S3Key, or S3ObjectVersion.
  • CEnsure that the function source code is base64-encoded before uploading the deployment package to S3.
  • DModify the execution role of the Lambda function to allow S3 access permission to the deployment package .ZIP file.
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• #202

  A company has three different environments: Development, QA, and Production. The company wants to deploy its code first in the Development environment, then QA, and then Production. Which AWS service can be used to meet this requirement?

  • AUse AWS CodeCommit to create multiple repositories to deploy the application.
  • BUse AWS CodeBuild to create, configure, and deploy multiple build application projects.
  • CUse AWS Data Pipeline to create multiple data pipeline provisions to deploy the application.
  • DUse AWS CodeDeploy to create multiple deployment groups.
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• #203

  A game stores user game data in an Amazon DynamoDB table. Individual users should not have access to other users' game data. How can this be accomplished?

  • AEncrypt the game data with individual user keys.
  • BRestrict access to specific items based on certain primary key values.
  • CStage data in SQS queues to inject metadata before accessing DynamoDB.
  • DRead records from DynamoDB and discard irrelevant data client-side.
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• #204

  A company provides APIs as a service and commits to a service level agreement (SLA) with all its users. To comply with each SLA, what should the company do?

  • AEnable throttling limits for each method in Amazon API Gateway.
  • BCreate a usage plan for each user and request API keys to access the APIs.
  • CEnable API rate limiting in Amazon Cognito for each user.
  • DEnable default throttling limits for each stage after deploying the APIs.
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• #205

  A company is creating a REST service using an Amazon API Gateway with AWS Lambda integration. The service must run different versions for testing purposes. What would be the BEST way to accomplish this?

  • AUse an x-Version header to denote which version is being called and pass that header to the Lambda function(s).
  • BCreate an API Gateway Lambda authorizer to route API clients to the correct API version.
  • CCreate an API Gateway resource policy to isolate versions and provide context to the Lambda function(s).
  • DDeploy the API versions as unique stages with unique endpoints and use stage variables to provide further context.
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• #206

  An application running on an Amazon Linux EC2 instance needs to manage the AWS infrastructure. How can the EC2 instance be configured to make AWS API calls securely?

  • ASign the AWS CLI command using the signature version 4 process.
  • BRun the aws configure AWS CLI command and specify the access key id and secret access key.
  • CSpecify a role for the EC2 instance with the necessary privileges.
  • DPass the access key id and secret access key as parameters for each AWS CLI command.
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• #207

  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?

  • AUS-STANDARD uses eventual consistency and it can take time for an object to be readable in a bucket.
  • BObjects in Amazon S3 do not become visible until they are replicated to a second region.
  • CUS-STANDARD imposes a 1 second delay before new objects are readable.
  • Dou exceeded the bucket object limit, and once this limit is raised the object will be visible.
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• #208

  An application stops working with the following error: The specified bucket does not exist. Where is the BEST place to start the root cause analysis?

  • ACheck the Elastic Load Balancer logs for DeleteBucket requests.
  • BCheck the application logs in Amazon CloudWatch Logs for Amazon S3 DeleteBucket errors.
  • CCheck AWS X-Ray for Amazon S3 DeleteBucket alarms.
  • DCheck AWS CloudTrail for a DeleteBucket event.
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• #2092টি বাছুন

  A Developer wants to upload data to Amazon S3 and must encrypt the data in transit. Which of the following solutions will accomplish this task? (Choose TWO)

  • ASet up hardware VPN tunnels to a VPC and access S3 through a VPC endpoint.
  • BSet up Client-Side Encryption with an AWS KMS-Managed Customer Master Key.
  • CSet up Server-Side Encryption with AWS KMS-Managed Keys.
  • DTransfer the data over an SSL connection.
  • ESet up Server-Side Encryption with S3-Managed Keys.
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• #2103টি বাছুন

  Which of the following services are key/value stores? (Choose 3 answers)

  • AAmazon ElastiCache.
  • BSimple Notification Service.
  • CDynamoDB.
  • DSimple Workflow Service.
  • ESimple Storage Service.
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• #211

  A Developer is trying to make API calls using SDK. The IAM user credentials used by the application require multi-factor authentication for all API calls. Which method the Developer use to access the multi-factor authentication protected API?

  • AGetFederationToken.
  • BGetCallerIdentity.
  • CGetSessionToken.
  • DDecodeAutherizationMessage.
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• #212

  A Developer is writing a serverless application that requires that an AWS Lambda function be invoked every 10 minutes. What is an automated and serverless way to trigger the function?

  • ADeploy an Amazon EC2 instance based on Linux, and edit its /etc/crontab file by adding a command to periodically invoke the Lambda function.
  • BConfigure an environment variable named PERIOD for the Lambda function. Set the value to 600.
  • CCreate an Amazon CloudWatch Events rule that triggers on a regular schedule to invoke the Lambda function.
  • DCreate an Amazon SNS topic that has a subscription to the Lambda function with a 600-second timer.
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• #213

  What type of block cipher does Amazon S3 offer for server side encryption?

  • ATriple DES.
  • BAdvanced Encryption Standard.
  • CBlowfish.
  • DRC5.
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• #214

  A Developer is investigating an issue whereby certain requests are passing through an Amazon API Gateway endpoint /MyAPI, but the requests do not reach the AWS Lambda function backing /MyAPI. The Developer found that a second Lambda function sometimes runs at maximum concurrency allowed for the given AWS account. How can the Developer address this issue?

  • AManually reduce the concurrent execution limit at the account level.
  • BAdd another API Gateway stage for /MyAPI, and shard the requests.
  • CConfigure the second Lambda function's concurrency execution limit.
  • DReduce the throttling limits in the API Gateway /MyAPI endpoint
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• #215

  An on-premises legacy application is caching data files locally and writing shared images to local disks. What is necessary to allow for horizontal scaling when migrating the application to AWS?

  • AModify the application to have both shared images and caching data written to Amazon EBS.
  • BModify the application to read and write cache data on Amazon S3, and also store shared images on S3.
  • CModify the application to use Amazon S3 for serving shared images; cache data can then be written to local disks.
  • DModify the application to read and write cache data on Amazon S3, while continuing to write shared images to local disks.
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• #216

  A Developer has created a Lambda function and is finding that the function is taking longer to complete than expected. After some debugging, the Developer has discovered that increasing compute capacity would improve performance. How can the Developer increase the Lambda compute resources?

  • ARun on a larger instance size with more compute capacity.
  • BIncrease the maximum execution time.
  • CSpecify a larger compute capacity when calling the Lambda function.
  • DIncrease the allocated memory for the Lambda function.
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• #217

  Company B provides an online image recognition service and utilizes SQS to decouple system components for scalability The SQS consumers poll the imaging queue as often as possible to keep end-to-end throughput as high as possible. However, Company B is realizing that polling in tight loops is burning CPU cycles and increasing costs with empty responses. How can Company B reduce the number of empty responses?

  • ASet the imaging queue visibility Timeout attribute to 20 seconds.
  • BSet the Imaging queue ReceiveMessageWaitTimeSeconds attribute to 20 seconds.
  • CSet the imaging queue MessageRetentionPeriod attribute to 20 seconds.
  • DSet the DelaySeconds parameter of a message to 20 seconds.
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• #2182টি বাছুন

  Which features can be used to restrict access to data in S3? (Choose TWO)

  • AUse S3 Virtual Hosting.
  • BSet an S3 Bucket policy.
  • CEnable IAM Identity Federation.
  • DSet an S3 ACL on the bucket or the object.
  • ECreate a CloudFront distribution for the bucket.
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• #219

  A company has implemented AWS CodePipeline to automate its release pipelines. The Development team is writing an AWS Lambda function what will send notifications for state changes of each of the actions in the stages. Which steps must be taken to associate the Lambda function with the event source?

  • ACreate a trigger that invokes the Lambda function from the Lambda console by selecting CodePipeline as the event source.
  • BCreate an event trigger and specify the Lambda function from the CodePipeline console.
  • CCreate an Amazon CloudWatch alarm that monitors status changes in Code Pipeline and triggers the Lambda function.
  • DCreate an Amazon CloudWatch Events rule that uses CodePipeline as an event source.
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• #220

  A Developer decides to store highly secure data in Amazon S3 and wants to implement server-side encryption (SSE) with granular control of who can access the master key. Company policy requires that the master key be created, rotated, and disabled easily when needed, all for security reasons. Which solution should be used to meet these requirements?

  • ASSE with Amazon S3 managed keys (SSE-S3).
  • BSSE with AWS KMS managed keys (SSE-KMS).
  • CSSE with AWS Secrets Manager.
  • DSSE with customer-provided encryption keys.
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