DVA-C02 practice questions 421–430

1. Question 421 · 548 in bank

   A developer must cache dependent artifacts from Maven Central, a public package repository, as part of an application’s build pipeline. The build pipeline has an AWS CodeArtifact repository where artifacts of the build are published. The developer needs a solution that requires minimum changes to the build pipeline. Which solution meets these requirements?

   • AModify the existing CodeAriifact repository to associate an upstream repository with the public package repository.
   • BCreate a new CodeAtfact repository that has an external connection to the public package repository.
   • CCreate a new CodeAifact domain that contains a new repository that has an external connection to the public package repository.
   • DModify the CodeAnifact repository resource policy to allow artifacts to be fetched from the public package repository.

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   Answer: A

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2. Question 422 · 548 in bank

   A developer is creating an AWS Step Functions state machine to handle an order processing workflow. When the state machine receives an order, the state machine pauses until the order has been confirmed. A record that is added to an Amazon DynamoDB table by another service confirms each order. The developer must complete the order processing workflow. Which solution will meet this requirement?

   • AUpdate the state machine to query the DynamoDB table by using the DynamoDB GetItem state to determine whether a record exists. If the record does exist, continue to the next state. If the record does not exist, wait 5 minutes and check again.
   • BSubscribe an AWS Lambda function to a DynamoDB table stream. Configure the Lambda function to run when a new record is added to the table. When the Lambda function receives the appropriate record, run the redrive execution command on the running state machine.
   • CSubscribe an AWS Lambda function to the DynamoDB table stream. Configure the Lambda function to run when a new record is added to the table. When the Lambda function receives the appropriate record, stop the current state machine invocation and start a new invocation.
   • DInvoke an AWS Lambda function from the state machine. Configure the Lambda function to continuously poll the DynamoDB table for the appropriate record and to return when a record exists. Continue the state machine invocation when the Lambda function returns. If the Lambda function times out, then fail the state machine.

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   Answer: A

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3. Question 423 · 548 in bank

   A developer is writing a web application that must share secure documents with end users. The documents are stored in a private Amazon S3 bucket. The application must allow only authenticated users to download specific documents when requested, and only for a duration of 15 minutes. How can the developer meet these requirements?

   • ACopy the documents to a separate S3 bucket that has a lifecycle policy for deletion after 15 minutes.
   • BCreate a presigned S3 URL using the AWS SDK with an expiration time of 15 minutes.
   • CUse server-side encryption with AWS KMS managed keys (SSE-KMS) and download the documents using HTTPS.
   • DModify the S3 bucket policy to only allow specific users to download the documents. Revert the change after 15 minutes.

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   Answer: B

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4. Question 424 · 548 in bank

   A company is developing a set of AWS Lambda functions to process data. The Lambda functions need to use a common third-party library as a dependency. The library is frequently updated with new features and bug fixes. The company wants to ensure that the Lambda functions always use the latest version of the library. Which solution will meet these requirements in the MOST operationally efficient way?

   • AStore the dependency and the function code in an Amazon S3 bucket.
   • BCreate a Lambda layer that includes the library. Attach the layer to each Lambda function.
   • CInstall the dependency in an Amazon Elastic File System (Amazon EFS) file system. Attach the file system to each Lambda function.
   • DCreate a new Lambda function to load the library. Configure the existing Lambda functions to invoke the new Lambda function when the existing functions need to use the library.

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   Answer: B

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5. Question 425 · 548 in bank

   A company’s application includes an Amazon DynamoDB table for product orders. The table has a primary partition key of orderId and has no sort key. The company is adding a new feature that requires the application to query the table by using the customerId attribute. Which solution will provide this query functionality?

   • AChange the existing primary key by setting customerId as the sort key.
   • BCreate a new global secondary index (GSI) on the table with a partition key of customerId.
   • CCreate a new local secondary index (LSI) on the table with a partition key of customerId.
   • DCreate a new local secondary index (LSI) on the table with a partition key of orderId and a sort key of customerId.

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   Answer: B

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6. Question 426 · 548 in bank

   A developer has written the following IAM policy to provide access to an Amazon S3 bucket:

   

   Which access does the policy allow regarding the s3:GetObject and s3:PutObject actions?

   • AAccess on all buckets except the “DOC-EXAMPLE-BUCKET” bucket
   • BAccess on all buckets that start with “DOC-EXAMPLE-BUCKET” except the “DOC-EXAMPLE-BUCKET/secrets” bucket
   • CAccess on all objects in the “DOC-EXAMPLE-BUCKET” bucket along with access to all S3 actions for objects in the “DOC-EXAMPLE-BUCKET” bucket that start with “secrets”
   • DAccess on all objects in the “DOC-EXAMPLE-BUCKET” bucket except on objects that start with “secrets”

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   Answer: D

   References

   • AWS documentation

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7. Question 427 · 548 in bank

   A company hosts applications on premises. The on-premises servers generate audit logs that are available through an HTTP endpoint. The company needs an automated solution to regularly ingest and store large volumes of audit data from the on-premises servers. The company also needs to perform queries on the audit data. Which solution will meet these requirements in the MOST operationally efficient way?

   • AExport the audit logs. Upload the logs to Amazon S3. Import the logs to an Amazon RDS DB instance.
   • BCreate an AWS Lambda function to call the HTTP endpoint to fetch audit logs. Configure an Amazon EventBridge scheduled rule to invoke the Lambda function. Configure the Lambda function to push the logs to AWS CloudTrail Lake.
   • CUse AWS DataSync to transfer audit logs to an Amazon S3 bucket. Load the logs into an Amazon S3 bucket. Use Amazon Athena to query the bucket.
   • DInstall the Amazon CloudWatch agent on the on-premises servers. Give the agent the ability to push audit logs to CloudWatch. Use CloudWatch Insights to query the logs.

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   Answer: B

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8. Question 428 · 548 in bank

   A developer is building an application that includes an AWS Lambda function that is written in .NET Core. The Lambda function’s code needs to interact with Amazon DynamoDB tables and Amazon S3 buckets. The developer must minimize the Lambda function’s deployment time and invocation duration. Which solution will meet these requirements?

   • AIncrease the Lambda function’s memory.
   • BInclude the entire AWS SDK for .NET in the Lambda function’s deployment package.
   • CInclude only the AWS SDK for .NET modules for DynamoDB and Amazon S3 in the Lambda function’s deployment package.
   • DConfigure the Lambda function to download the AWS SDK for .NET from an S3 bucket at runtime.

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   Answer: C

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9. Question 429 · 548 in bank

   A development team has an Amazon API Gateway REST API that is backed by an AWS Lambda function. Users have reported performance issues for the Lambda function. The development team identified the source of the issues as a cold start of the Lambda function. The development team needs to reduce the time needed for the Lambda function to initialize. Which solution will meet this requirement?

   • AChange the Lambda concurrency to reserved concurrency.
   • BIncrease the timeout of the Lambda function.
   • CIncrease the memory allocation of the Lambda function.
   • DConfigure provisioned concurrency for the Lambda function.

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   Answer: D

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10. Question 430 · 548 in bank

    A video streaming company has a pipe in Amazon EventBridge Pipes that uses an Amazon Simple Queue Service (Amazon SQS) queue as an event source. The pipe publishes all source events to a target EventBridge event bus. Before events are published, the pipe uses an AWS Lambda function to retrieve the stream status of each event from a database and adds the stream status to each source event. The company wants the pipe to publish events to the event bus only if the video stream has a status of ready. Which solution will meet these requirements?

    • AAdd a filter step to the pipe that will match on a stream status of ready.
    • BUpdate the Lambda function to return only video streams that have a status of ready.
    • CInclude a filter for a status of ready in all EventBridge rules that subscribe to the event bus.
    • DAdd an input transformer to the pipe output that filters streams that have a status of ready.

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    Answer: A

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DVA-C02 practice, question 421. 548 questions available.