AWS-Certified-Developer-Associate Free Practice Test

- (Exam Topic 2)
A Developer is building a web application that uses Amazon API Gateway to expose an AWS Lambda function to process requests from clients. During testing, the Developer notices that the API Gateway times out even though the Lambda function finishes under the set time limit.
Which of the following API Gateway metrics in Amazon CloudWatch can help the Developer troubleshoot the issue? (Choose two.)

1. A. CacheHitCount
2. B. IntegrationLatency
3. C. CacheMissCount
4. D. Latency
5. E. Count

Correct Answer: BC
https://docs.aws.amazon.com/apigateway/latest/developerguide/api-gateway-metrics-and-dimensions.html

- (Exam Topic 3)
An AWS Lambda function accesses two Amazon DynamoDB tables. A developer wants to improve the performance of the Lambda function by identifying bottlenecks in the function. How can the developer inspect the timing of the DynamoDB API calls?

1. A. Add DynamoDB as an event source to the Lambda functio
2. B. View the performance with Amazon CloudWatch metrics
3. C. Place an Application Load Balancer (ALB) in front of the two DynamoDB table
4. D. Inspect the ALB logs
5. E. Limit Lambda to no more than five concurrent invocations Monitor from the Lambda console
6. F. Enable AWS X-Ray tracing for the functio
7. G. View the traces from the X-Ray service.

Correct Answer: D

- (Exam Topic 1)
A company is migrating a single-server, on-premises web application to AWS. The company intends to use multiple servers behind an Elastic Load Balancer (ELB) to balance the load, and will also store session data in memory on the web server. The company does not want to lose that session data if a server fails or goes offline, and it wants to minimize user’s downtime.
Where should the company move session data to MOST effectively reduce downtime and make users’ session data more fault tolerant?

1. A. An Amazon ElastiCache for Redis cluster
2. B. A second Amazon EBS volume
3. C. The web server’s primary disk
4. D. An Amazon EC2 instance dedicated to session data

Correct Answer: A

- (Exam Topic 2)
A developer wants to send multi-value headers to an AWS Lambda function that is registered as a target with an Application Load Balancer (ALB).
What should the developer do to achieve this?

1. A. Place the Lambda function and target group in the same account
2. B. Send the request body to the Lambda function with a size less than 1 MB 0
3. C. Include the Base64 encoding status status code, status description, and headers in the Lambda function
4. D. Enable the multi-value headers on the ALB

Correct Answer: D

- (Exam Topic 2)
A developer is creating as AWS lambda function that generates a new file each time it runs. Each new file must be checked into an AWS CodeCommit repository hosted in the same AWS account.
How should the developer accomplish this?

1. A. When the Lambda function starts, use the Git CLI to Clone the repositor
2. B. Check the new file into the cloned repository and push the change.
3. C. After the new file is created in Lambda, use cURL to invoke the CodeCommit AP
4. D. Send the file to the repository.
5. E. Use an AWS SDK to instantiate a CodeCommit Clien
6. F. Invoke the put _ file method to add the file to the repository.
7. G. Upload the new file to an Amazon S3 bucke
8. H. Create an AWS step Function to accept S3 event
9. I. In the step Function, add the new file to the repository.

Correct Answer: D