DVA-C02

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The dumps for DVA-C02 exam was last updated on Jun 24,2025 .

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Question#1

A developer is building a microservices-based application by using Python on AWS and several AWS services The developer must use AWS X-Ray The developer views the service map by using the console to view the service dependencies. During testing, the developer notices that some services are missing from the service map
What can the developer do to ensure that all services appear in the X-Ray service map?

A. Modify the X-Ray Python agent configuration in each service to increase the sampling rate

B. Instrument the application by using the X-Ray SDK for Python. Install the X-Ray SDK for all the services that the application uses

C. Enable X-Ray data aggregation in Amazon CloudWatch Logs for all the services that the application uses

D. Increase the X-Ray service map timeout value in the X-Ray console

Explanation:
AWS X-Ray SDK: The primary way to enable X-Ray tracing within applications. The SDK sends data about requests and subsegments to the X-Ray daemon for service map generation. Instrumenting All Services: To visualize a complete microservice architecture on the service map, each relevant service must include the X-Ray SDK.
Reference: AWS X-Ray Documentation: https://docs.aws.amazon.com/xray/
X-Ray SDK for Python: https://docs.aws.amazon.com/xray/latest/devguide/xray-sdk-python.html

Question#2

A developer is designing an AWS Lambda function that creates temporary files that are less than 10 MB during invocation. The temporary files will be accessed and modified multiple times during invocation. The developer has no need to save or retrieve these files in the future.
Where should the temporary files be stored?

A. the /tmp directory

B. Amazon Elastic File System (Amazon EFS)

C. Amazon Elastic Block Store (Amazon EBS)

D. Amazon S3

Explanation:
AWS Lambda is a service that lets developers run code without provisioning or managing servers. Lambda provides a local file system that can be used to store temporary files during invocation. The local file system is mounted under the /tmp directory and has a limit of 512 MB. The temporary files are accessible only by the Lambda function that created them and are deleted after the function execution ends. The developer can store temporary files that are less than 10 MB in the /tmp directory and access and modify them multiple times during invocation.
Reference: [What Is AWS Lambda? - AWS Lambda]
[AWS Lambda Execution Environment - AWS Lambda]

Question#3

A developer is writing an application to analyze the traffic to a fleet of Amazon EC2 instances. The EC2 instances run behind a public Application Load Balancer (ALB). An HTTP server runs on each of the EC2 instances, logging all requests to a log file.
The developer wants to capture the client public IP addresses. The developer analyzes the log files and notices only the IP address of the ALB.
What must the developer do to capture the client public IP addresses in the log file?

A. Add a Host header to the HTTP server log configuration file.

B. Install the Amazon CloudWatch Logs agent on each EC2 instance. Configure the agent to write to the log file.

C. Install the AWS X-Ray daemon on each EC2 instance. Configure the daemon to write to the log file.

D. Add an X-Forwarded-For header to the HTTP server log configuration file.

Question#4

Which AWS service would you use to orchestrate microservices that include both containerized and serverless components?

A. AWS Elastic Beanstalk

B. AWS ECS and AWS Fargate

C. AWS Step Functions

D. Amazon EKS

Question#5

A company’s website runs on an Amazon EC2 instance and uses Auto Scaling to scale the environment during peak times. Website users across the world ate experiencing high latency flue lo sialic content on theEC2 instance. even during non-peak hours.
When companion of steps mill resolves the latency issue? (Select TWO)

A. Double the Auto Scaling group's maximum number of servers

B. Host the application code on AWS lambda

C. Scale vertically by resizing the EC2 instances

D. Create an Amazon Cloudfront distribution to cache the static content

E. Store the application’s sialic content in Amazon S3

Explanation:
The combination of steps that will resolve the latency issue is to create an Amazon CloudFront distribution to cache the static content and store the application’s static content in Amazon S3. This way, the company can use CloudFront to deliver the static content from edge locations that are closer to the website users, reducing latency and improving performance. The company can also use S3 to store the static content reliably and cost-effectively, and integrate it with CloudFront easily. The other options either do not address the latency issue, or are not necessary or feasible for the given scenario.
Reference: Using Amazon S3 Origins and Custom Origins for Web Distributions

Exam Code: DVA-C02 Q & A: 374 Q&As Updated: Jun 24,2025

Full DVA-C02 Exam Dumps Here

Exam Code: DVA-C02
Q & A: 374 Q&As
Updated: Jun 24,2025

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