DVA-C02 RELIABLE BRAINDUMPS SHEET & HOT DVA-C02 QUESTIONS

DVA-C02 Reliable Braindumps Sheet & Hot DVA-C02 Questions

DVA-C02 Reliable Braindumps Sheet & Hot DVA-C02 Questions

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Tags: DVA-C02 Reliable Braindumps Sheet, Hot DVA-C02 Questions, DVA-C02 Pdf Files, DVA-C02 Latest Test Discount, Key DVA-C02 Concepts

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Amazon AWS Certified Developer - Associate Sample Questions (Q92-Q97):

NEW QUESTION # 92
A company has an application that uses an AWS Lambda function to consume messages from an Amazon Simple Queue Service (Amazon SQS) queue. The SQS queue is configured with a dead-letter queue. Due to a defect in the application, AWS Lambda failed to process some messages. A developer fixed the bug and wants to process the failed messages again.
How should the developer resolve this issue?

  • A. Use the PurgeQueue API to remove messages from the dead-letter queue and return the messages to the original SQS queue.
  • B. Use the StartMessageMoveTask API to move messages from the dead-letter queue to the original SQS queue.
  • C. Use the SendMessageBatch API to send messages from the dead-letter queue to the original SQS queue.
  • D. Use the ChangeMessageVisibility API to configure messages in the dead-letter queue to be visible in the original SQS queue.

Answer: C


NEW QUESTION # 93
A company built an online event platform. For each event, the company organizes quizzes and generates leaderboards that are based on the quiz scores. The company stores the leaderboard data in Amazon DynamoDB and retains the data for 30 days after an event is complete. The company then uses a scheduled job to delete the old leaderboard data.
The DynamoDB table is configured with a fixed write capacity. During the months when many events occur, the DynamoDB write API requests are throttled when the scheduled delete job runs.
A developer must create a long-term solution that deletes the old leaderboard data and optimizes write throughput.
Which solution meets these requirements?

  • A. Set a higher write capacity when the scheduled delete job runs.
  • B. Use DynamoDB Streams to schedule and delete the leaderboard data.
  • C. Use AWS Step Functions to schedule and delete the leaderboard data.
  • D. Configure a TTL attribute for the leaderboard data.

Answer: A


NEW QUESTION # 94
A developer is working on a web application that uses Amazon DynamoDB as its data store The application has two DynamoDB tables one table that is named artists and one table that is named songs The artists table has artistName as the partition key. The songs table has songName as the partition key and artistName as the sort key The table usage patterns include the retrieval of multiple songs and artists in a single database operation from the webpage. The developer needs a way to retrieve this information with minimal network traffic and optimal application performance.
Which solution will meet these requirements'?

  • A. Create a local secondary index (LSI) on the songs table that uses artistName as the partition key Perform a query operation for each artistName on the songs table that filters by the list of songName Perform a query operation for each artistName on the artists table
  • B. Perform a BatchGetltem operation that returns items from the two tables. Use the list of songName artistName keys for the songs table and the list of artistName key for the artists table.
  • C. Perform a BatchGetltem operation on the songs table that uses the songName/artistName keys. Perform a BatchGetltem operation on the artists table that uses artistName as the key.
  • D. Perform a Scan operation on each table that filters by the list of songName/artistName for the songs table and the list of artistName in the artists table.

Answer: B

Explanation:
Explanation
BatchGetItem can return one or multiple items from one or more tables. For reference check the link below
https://docs.aws.amazon.com/amazondynamodb/latest/APIReference/API_BatchGetItem.html


NEW QUESTION # 95
A developer is writing an AWS Lambda function. The developer wants to log key events that occur while the Lambda function runs. The developer wants to include a unique identifier to associate the events with a specific function invocation. The developer adds the following code to the Lambda function:

Which solution will meet this requirement?

  • A. Obtain the request identifier from the AWS request ID field in the event object. Configure the application to write logs to a file.
  • B. Obtain the request identifier from the AWS request ID field in the context object. Configure the application to write logs to standard output.
  • C. Obtain the request identifier from the AWS request ID field in the context object. Configure the application to write logs to a file.
  • D. Obtain the request identifier from the AWS request ID field in the event object. Configure the application to write logs to standard output.

Answer: C


NEW QUESTION # 96
A developer is creating a mobile application that will not require users to log in.
What is the MOST efficient method to grant users access to AWS resources'?

  • A. Use Amazon Cognito to associate unauthenticated users with an IAM role that has limited access to resources.
  • B. Create an AWS Lambda function to create an 1AM user when a user accesses the application.
  • C. Use an identity provider to securely authenticate with the application.
  • D. Create credentials using AWS KMS and apply these credentials to users when using the application.

Answer: A

Explanation:
Explanation
This solution is the most efficient method to grant users access to AWS resources without requiring them to log in. Amazon Cognito is a service that provides user sign-up, sign-in, and access control for web and mobile applications. Amazon Cognito identity pools support both authenticated and unauthenticated users.
Unauthenticated users receive access to your AWS resources even if they aren't logged in with any of your identity providers (IdPs). You can use Amazon Cognito to associate unauthenticated users with an IAM role that has limited access to resources, such as Amazon S3 buckets or DynamoDB tables. This degree of access is useful to display content to users before they log in or to allow them to perform certain actions without signing up. Using an identity provider to securely authenticate with the application will require users to log in, which does not meet the requirement. Creating an AWS Lambda function to create an IAM user when a user accesses the application will incur unnecessary costs and complexity, and may pose security risks if not implemented properly. Creating credentials using AWS KMS and applying them to users when using the application will also incur unnecessary costs and complexity, and may not provide fine-grained access control for resources.


NEW QUESTION # 97
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