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DVA-C02 latest exam torrent & DVA-C02 pass-guaranteed dumps

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Amazon AWS Certified Developer - Associate Sample Questions (Q551-Q556):

NEW QUESTION # 551
A company has a social media application that receives large amounts of traffic. User posts and interactions are continuously updated in an Amazon RDS database. The data changes frequently, and the data types can be complex. The application must serve read requests with minimal latency.
The application's current architecture struggles to deliver these rapid data updates efficiently. The company needs a solution to improve the application's performance.
Which solution will meet these requirements?

A. Use Amazon DynamoDB Accelerator (DAX) in front of the RDS database to provide a caching layer for the high volume of rapidly changing data.
B. Create an Amazon ElastiCache for Redis cluster. Update the application code to use a write- through caching strategy and read the data from Redis.
C. Add an Amazon CloudFront distribution in front of the RDS database to provide a caching layer for the high volume of rapidly changing data.
D. Set up Amazon S3 Transfer Acceleration on the RDS database to enhance the speed of data transfer from the databases to the application.

Answer: B

Explanation:
https://docs.aws.amazon.com/whitepapers/latest/database-caching-strategies-using- redis/caching-patterns.html

NEW QUESTION # 552
A company uses Amazon Simple Queue Service (Amazon SQS) to decouple its microservices architecture. Some messages in an SQS queue contain sensitive information. A developer must implement a solution that encrypts all the data at rest.
Which solution will meet this requirement?

A. Use the aws:SecureTransport condition in the queue policy to ensure that only HTTPS (TLS) is used for all requests to the SQS queue.
B. Enable server-side encryption for the SQS queue by using an SQS managed encryption key (SSE-SQS).
C. Use AWS Certificate Manager (ACM) to generate an SSL/TLS certificate. Reference the certificate when messages are sent to the queue.
D. Set a message attribute in the SQS SendMessage request for messages that are sent to the queue. Set the Name to ENCRYPT. Set the Value to TRUE.

Answer: B

Explanation:
https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-server- side-encryption.html

NEW QUESTION # 553
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 daemon on the on-premises servers to capture and relay the data to the X-Ray service.
B. Install and run the X-Ray SDK on the on-premises servers to capture and relay the data to the X-Ray service.
C. 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 PutTraceSegments API call.

Answer: A

NEW QUESTION # 554
A company is creating a new application that gives users the ability to upload and share short video files. The average size of the video files is 10 MB. After a user uploads a file, a message needs to be placed into an Amazon Simple Queue Service (Amazon SQS) queue so the file can be processed.
The files need to be accessible for processing within 5 minutes.
Which solution will meet these requirements MOST cost-effectively?

A. Write the files to Amazon S3 Glacier Deep Archive. Add the S3 location of the files to the SQS queue.
B. Write the files to Amazon S3 Standard. Add the S3 location of the files to the SQS queue.
C. Write messages that contain the contents of the uploaded files to the SQS queue.
D. Write the files to an Amazon Elastic Block Store (Amazon EBS) General Purpose SSD volume.
Add the EBS location of the files to the SQS queue.

Answer: B

Explanation:
Amazon S3 Standard provides immediate access to files and is cost-effective for files that need to be accessed within 5 minutes.
By adding the S3 location to the SQS queue, you avoid transferring large files directly, which is both more efficient and scalable.

NEW QUESTION # 555
A real-time messaging application uses Amazon API Gateway WebSocket APIs with backend HTTP service. A developer needs to build a feature in the application to identify a client that keeps connecting to and disconnecting from the WebSocket connection. The developer also needs the ability to remove the client Which combination of changes should the developer make to the application to meet these requirements? (Choose two.)

A. Switch to HTTP APIs in the backend service.
B. Implement $connect and $disconnect routes in the backend service.
C. Switch to REST APIs in the backend service.
D. Use the callback URL to disconnect the client from the backend service.
E. Add code to track the client status in Amazon ElastiCache in the backend service.

Answer: B,E

NEW QUESTION # 556
......

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