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NEW QUESTION 32
A Developer needs to use AWS X-Ray to monitor an application that is deployed on EC2 instances.
What steps have to be executed to perform the monitoring?

A. Deploy the X-Ray SDK with the application and use X-Ray annotation.B. Install the X-Ray daemon and instrument the application code.C. Install the X-Ray daemon and configure it to forward data to Amazon CloudWatch Events.D. Deploy the X-Ray SDK with the application and instrument the application code.

Answer: A

 

NEW QUESTION 33
A Developer has written a serverless application using multiple AWS services. The business logic is written as a Lambda function which has dependencies on third-party libraries. The Lambda function endpoints will be exposed using Amazon API Gateway. The Lambda function will write the information to Amazon DynamoDB.
The Developer is ready to deploy the application but must have the ability to rollback. How can this deployment be automated, based on these requirements?

A. Use syntax conforming to the Serverless Application Model in the AWS CloudFormation template to define the Lambda function resource.B. Deploy using Amazon Lambda API operations to create the Lambda function by providing a deployment package.C. Use an AWS CloudFormation template and use CloudFormation syntax to define the Lambda function resource in the template.D. Create a bash script which uses AWS CLI to package and deploy the application.

Answer: A

Explanation:
Explanation
Refer AWS documentation - SAM Gradual Code Deployment
If you use AWS SAM to create your serverless application, it comes built-in with AWS CodeDeploy to help ensure safe Lambda deployments. With just a few lines of configuration, AWS SAM does the following for you:
* Deploys new versions of your Lambda function, and automatically creates aliases that point to the new version.
* Gradually shifts customer traffic to the new version un re satisfied that it's working as expected, or you roll back the update.
* Defines pre-traffic and post-traffic test functions to verify that the newly deployed code is configured correctly and your application operates as expected.
* Rolls back the deployment if CloudWatch alarms are triggered.

 

NEW QUESTION 34
After installing the AWS CLI, a Developer tries to run the command aws configure but receives the following error:
Error: aws: command not found
What is the most likely cause of this error?

A. Incorrect AWS credentials were provided.B. Access to the aws executable has been denied to the installer.C. The aws executable is not in the PATH environment variable.D. The aws script does not have an executable file mode.

Answer: C

Explanation:
Reference:
https://docs.aws.amazon.com/cli/latest/userguide/cli-chap-troubleshooting.html

 

NEW QUESTION 35
A company has an online order website that uses Amazon DynamoDB to store item inventory. A sample of the inventory object is as follows:

A developer needs to reduce all inventory prices by 100 as long as the resulting price would not be less than 500. What should the developer do to make this change with the LEAST number of calls to DynamoDB?

A. Perform a DynamoDB Updateltem operation with a condition expression of "Price >= 600".B. Perform a DynamoDB Updateltem operation with a condition expression of "ProductCategory IN <{"S": "Sporting Goods"}) and Price = 600".C. Perform a DynamoDB Query operation with the Id. If the price is >= 600, perform an Updateltem operation to update the price.

Answer: B

 

NEW QUESTION 36
Which of the following is chosen as the default region when making an API call with an AWS SDK?

A. eu-west-1B. ap-northeast-1C. us-west-2D. us-east-1E. us-central-1

Answer: D

Explanation:
https://docs.aws.amazon.com/sdk-for-java/v1/developer-guide/java-dg-region-selection.html. This section applies only when using a client builder to access AWS services. AWS clients created by using the client constructor will not automatically determine region from the environment and will, instead, use the default SDK region (USEast1).

 

NEW QUESTION 37
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