Free AWS-CERTIFIED-DEVELOPER-ASSOCIATE-DVA-C02 Amazon AWS-CERTIFIED-DEVELOPER-ASSOCIATE-DVA-C02 Practice Test Question - Page 7

Question 19 (Topic 1)

A company is hosting a workshop for external users and wants to share the reference documents with the external users for 7 days. The company stores the reference documents in an Amazon S3 bucket that the company owns. What is the MOST secure way to share the documents with the external users?

Select an option, then click Submit answer.

○ Use S3 presigned URLs to share the documents with the external users. Set an expiration time of 7 days.
○ Move the documents to an Amazon WorkDocs folder. Share the links of the WorkDocs folder with the external users.
○ Create temporary IAM users that have read-only access to the S3 bucket. Share the access keys with the external users. Expire the credentials after 7 days.
○ Create a role that has read-only access to the S3 bucket. Share the Amazon Resource Name (ARN) of this role with the external users.

Question 20 (Topic 1)

A developer registered an AWS Lambda function as a target for an Application Load Balancer (ALB) using a CLI command. However, the Lambda function is not being invoked when the client sends requests through the ALB. Why is the Lambda function not being invoked?

Select an option, then click Submit answer.

○ A Lambda function cannot be registered as a target for an ALB.
○ A Lambda function can be registered with an ALB using AWS Management Console only.
○ The permissions to invoke the Lambda function are missing.
○ Cross-zone is not enabled on the ALB.

Reference / correct answer:

The permissions to invoke the Lambda function are missing.

Most accepted answer: C. The permissions to invoke the Lambda function are missing.

Community votes: C=5

Selected Answer: C To allow an ALB to invoke a Lambda function, you need to grant the ALB permission to invoke the Lambda. This is typically done by adding a resource-based policy to the Lambda function, granting invoke permission to the ALB. If this permission is not set, the ALB will not be able to trigger the Lambda function in response to incoming requests. upvoted 5 times

Selected Answer: C https://docs.aws.amazon.com/elasticloadbalancing/latest/application/lambda-functions.html Permissions to invoke the Lambda function If you create the target group and register the Lambda function using the AWS Management Console, the console adds the required permissions to your Lambda function policy on your behalf. Otherwise, after you create the target group and register the function using the AWS CLI, you must use the add-permission command to grant Elastic Load Balancing permission to invoke your Lambda function. We recommend that you use the aws:SourceAccount and aws:SourceArn condition keys to restrict function invocation to the specified target group. aws lambda add-permission \ --function-name lambda-function-arn-with-alias-name \ --statement-id elb1 \ --principal elasticloadbalancing.amazonaws.com \ .... upvoted 1 times

Selected Answer: C C is the correct answer. upvoted 1 times

Selected Answer: C The Lambda function must have the lambda:InvokeFunction permission for the ALB to successfully invoke it. upvoted 3 times

Selected Answer: C ANS: C upvoted 3 times

Question 21 (Topic 1)

A developer has created a large AWS Lambda function. Deployment of the function is failing because of an InvalidParameterValueException error. The error message indicates that the unzipped size of the function exceeds the maximum supported value. Which actions can the developer take to resolve this error? (Choose two.)

Select an option, then click Submit answer.

○ Submit a quota increase request to AWS Support to increase the function to the required size.
○ Use a compression algorithm that is more efficient than ZIP.
○ Break up the function into multiple smaller functions.
○ Zip the .zip file twice to compress the file more.
○ Move common libraries, function dependencies, and custom runtimes into Lambda layers.

Reference / correct answer:

Move common libraries, function dependencies, and custom runtimes into Lambda layers.

Most accepted answer: E. Move common libraries, function dependencies, and custom runtimes into Lambda layers.

Community votes: A=2, C=4, D=1, E=5

Selected Answer: CE CE is the correct answer. upvoted 3 times

Selected Answer: CE in this case quota cannot be increased https://docs.aws.amazon.com/lambda/latest/dg/gettingstarted-limits.html#:~:text=The%20following%20quotas%20apply%20to%20function%20configuration%2C%20deployment%2C%20and%20execution.%20Except%20as%20noted%2C%20they%20can%27t%20be%20changed. upvoted 2 times

Selected Answer: CE C. Break up the function into multiple smaller functions. If the size of the Lambda function is too large, breaking it into smaller, more modular functions can help. Each function can be responsible for a specific part of the application's logic. This approach not only helps with deployment but also aligns with microservices best practices, potentially improving the maintainability and scalability of the application. E. Move common libraries, function dependencies, and custom runtimes into Lambda layers. Lambda layers are a way to manage and share common components across multiple Lambda functions. By moving libraries, dependencies, and runtimes into layers, you reduce the size of the Lambda function's deployment package. Layers can be shared across multiple functions, leading to more efficient use of storage and easier management of common code. upvoted 4 times

Selected Answer: CE C and E upvoted 2 times

A E no discussion upvoted 2 times

Free AWS-CERTIFIED-DEVELOPER-ASSOCIATE-DVA-C02 – Amazon AWS-CERTIFIED-DEVELOPER-ASSOCIATE-DVA-C02 Practice Test Question