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[General] Valid AWS-Developer Exam Answers - AWS-Developer Reliable Test Preparation

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【General】 Valid AWS-Developer Exam Answers - AWS-Developer Reliable Test Preparation

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Amazon AWS Certified Developer Associate Exam (DVA-C02) Sample Questions (Q129-Q134):NEW QUESTION # 129
A developer is creating an AWS Lambda function. The Lambda function needs an external library to connect to a third-party solution The external library is a collection of files with a total size of 100 MB The developer needs to make the external library available to the Lambda execution environment and reduce the Lambda package space Which solution will meet these requirements with the LEAST operational overhead?
  • A. Create an Amazon S3 bucket Upload the external library into the S3 bucket. Mount the S3 bucket folder in the Lambda function Import the library by using the proper folder in the mount point.
  • B. Create a Lambda layer to store the external library Configure the Lambda function to use the layer
  • C. Load the external library to the Lambda function's /tmp directory during deployment of the Lambda package. Import the library from the /tmp directory.
  • D. Create an Amazon Elastic File System (Amazon EFS) volume. Upload the external library to the EFS volume Mount the EFS volume in the Lambda function. Import the library by using the proper folder in the mount point.
Answer: B
Explanation:
* Lambda Layers: These are designed to package dependencies that you can share across functions.
* How to Use:
* Create a layer, upload your 100MB library as a zip.
* Attach the layer to your function.
* In your function code, import the library from the standard layer path.
References:
Lambda Layers: https://docs.aws.amazon.com/lamb ... uration-layers.html

NEW QUESTION # 130
A developer is migrating code to an AWS Lambda function that will access an Amazon Aurora MySQL database.
What is the MOST secure way to authenticate the function to the database?
  • A. Store the database credentials as encrypted parameters in AWS Systems Manager Parameter Store Obtain the credentials from Systems Manager when the Lambda function needs to connect to the database
  • B. Store the database credentials in an Amazon S3 bucket that has a restrictive bucket policy for the Lambda role only when accessing the credentials Use AWS KMS to encrypt the data
  • C. Create a policy with rds-db connect access to the database and attach it to the role assigned to the Lambda function
  • D. Store the database credentials in AWS Secrets Manager Let Secrets Manager handle the rotation of the credentials, as required
Answer: D

NEW QUESTION # 131
A developer is deploying an AWS Lambda function The developer wants the ability to return to older versions of the function quickly and seamlessly.
How can the developer achieve this goal with the LEAST operational overhead?
  • A. Use AWS CodePipeline for deployments and rollbacks.
  • B. Use AWS OpsWorks to perform blue/green deployments.
  • C. Maintain deployment packages for older versions in Amazon S3.
  • D. Use a function alias with different versions.
Answer: D
Explanation:
A function alias is a pointer to a specific Lambda function version. You can use aliases to create different environments for your function, such as development, testing, and production. You can also use aliases to perform blue/green deployments by shifting traffic between two versions of your function gradually. This way, you can easily roll back to a previous version if something goes wrong, without having to redeploy your code or change your configuration. Reference: AWS Lambda function aliases

NEW QUESTION # 132
An application is processing clickslream data using Amazon Kinesis. The clickstream data feed into Kinesis experiences periodic spikes. The PutRecords API call occasionally fails and the logs show that the failed call returns the response shown below.

Which techniques will help mitigate this exception? (Select TWO.)
  • A. Implement retries with exponential backoff
  • B. Use a PutRecord API instead of PutRecords
  • C. Reduce the frequency and/or size of the requests
  • D. Reduce the number of KCL consumers.
  • E. Use Amazon SNS instead of Kinesis.
Answer: A,C

NEW QUESTION # 133
What are the steps to using the AWS CLI to launch a templatized serverless application?
  • A. Use AWS CloudFormation package then CloudFormation deploy.
  • B. Use AWS CloudFormation validate-template then CloudFormation create-change-set.
  • C. Use AWS CloudFormation get-template then CloudFormation execute-change-set.
  • D. Use AWS CloudFormation create-stack then CloudFormation update-stack.
Answer: A
Explanation:
Explanation
Explanation/Reference: https://github.com/awslabs/aws-sam-cli

NEW QUESTION # 134
......
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