File Info
| Exam | AWS Certified Developer Associate Exam |
| Number | DVA-C01 |
| File Name | Amazon.DVA-C01.ExamTopics.2024-08-25.438q.vcex |
| Size | 2 MB |
| Posted | Aug 25, 2024 |
| Download | Amazon.DVA-C01.ExamTopics.2024-08-25.438q.vcex |
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Demo Questions
Question 1
As a big state machine, the existing design makes use of several Lambda functions calling one another. This state machine's coordination is handled by old bespoke code that is prone to failure.
Which AWS Service can assist with state machine refactoring and management?
- AWS Data Pipeline
- AWS SNS with AWS SQS
- Amazon Elastic MapReduce
- AWS Step Functions
Correct answer: D
Question 2
A business created an online event platform. The firm conducts quizzes and creates leaderboards based on the quiz results for each event. The organization maintains leaderboard data in Amazon DynamoDB and preserves it for 30 days after the conclusion of an event. The firm then deletes the outdated leaderboard data through a scheduled process.
The DynamoDB table has a fixed write capacity defined. When the scheduled deletion task runs during months with a high volume of events, the DynamoDB write API calls are throttled.
A developer must construct a long-term solution that permanently deletes historical leaderboard data and maximizes write performance.
Which solution satisfies these criteria?
- Configure a TTL attribute for the leaderboard data.
- Use DynamoDB Streams to schedule and delete the leaderboard data.
- Use AWS Step Functions to schedule and delete the leaderboard data.
- Set a higher write capacity when the scheduled delete job runs.
Correct answer: C
Question 3
A developer hosts static websites using Amazon S3 buckets. The developer builds two S3 buckets: one for the code and another for the assets, which include picture and video files. When a user tries to access the assets bucket from the code bucket, access is forbidden, and the website application displays a 403 error.
How should the Developer approach this situation?
- Create an IAM role and apply it to the assets bucket for the code bucket to be granted access.
- Edit the bucket policy of the assets bucket to open access to all principals.
- Edit the cross-origin resource sharing (CORS) configuration of the assets bucket to allow any origin to access the assets.
- Change the code bucket to use AWS Lambda functions instead of static website hosting.
Correct answer: B
Question 4
On AWS Lambda, a developer is developing an image microservice. The service relies on a number of libraries that are not included in the Lambda runtime environment.
Which approach should the developer choose while developing the Lambda deployment package?
- Create a ZIP file with the source code and all dependent libraries.
- Create a ZIP file with the source code and a script that installs the dependent libraries at runtime.
- Create a ZIP file with the source code. Stage the dependent libraries on an Amazon S3 bucket indicated by the Lambda environmentvariable LD_LIBRARY_PATH
- Create a ZIP file with the source code and a buildspec.yaml file that installs the dependent libraries on AWS Lambda.
Correct answer: B
Question 5
A developer is conducting an investigation on behalf of a business. Certain queries transit via an Amazon API Gateway endpoint but never reach the AWS Lambda function that supports the endpoint. The developer discovers that a second Lambda function sometimes exceeds the maximum concurrency limit for the AWS account.
How can the developer resolve this situation?
- Manually reduce the concurrent quota at the account level.
- Add another API Gateway stage for the endpoint. Shard the requests.
- Request to increase the Lambda concurrency quota through the Service Quotas dashboard.
- Reduce the throttling quota in the API Gateway endpoint.
Correct answer: C
Question 6
When launching containers in Amazon ECS, where may PortMapping be defined?
- Security groups
- Amazon Elastic Container Registry (Amazon ECR)
- Container agent
- Task definition
Correct answer: D
Question 7
How should access keys be handled in AWS according to best practices? (Select two.)
- Use the same access key in all applications for consistency.
- Delete all access keys for the account root user.
- Leave unused access keys in the account for tracking purposes.
- Embed and encrypt access keys in code for continuous deployment.
- Use Amazon IAM roles instead of access keys where possible.
Correct answer: BE
Question 8
What is the run order of the hooks for in-place deployments in an AWS CodeDeploy deployment?
- Before Install -> Application Stop -> Application Start -> After Install
- Application Stop -> Before Install -> After Install -> Application Start
- Before Install -> Application Stop -> Validate Service -> Application Start
- Application Stop -> Before Install -> Validate Service -> Application Start
Correct answer: B
Question 9
Data is read from an Amazon DynamoDB database by an application. The program gets several ProvisionedThroughputExceeded errors many times a day for a duration of 15 seconds.
What should be done with this exception?
- Create a new global secondary index for the table to help with the additional requests.
- Retry the failed read requests with exponential backoff.
- Immediately retry the failed read requests.
- Use the DynamoDB "UpdateItem" API to increase the provisioned throughput capacity of the table.
Correct answer: B
Question 10
All data in transit between an EC2 instance and an Amazon EBS volume must be secured for a physician's ofice management application.
Which one of the following strategies satisfies this criterion? (Select two.)
- Create encrypted snapshots into Amazon S3.
- Use Amazon RDS with encryption.
- Use IAM roles to limit access to the Amazon EBS volume.
- Enable EBS encryption.
- Leverage OS-level encryption.
Correct answer: AD
