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NEW QUESTION 48
Which EC2 API call would you use to retrieve a list of Amazon Machine Images (AMIs)?

• A. DescribeAMls
• B. You cannot retrieve a list of AMIs as there are over 10,000 AMIs
• C. DescnbeInstances
• D. GetAMls
• E. DescribeImages

Answer: B

NEW QUESTION 49
A Developer is designing a fault-tolerant environment where client sessions will be saved.
How can the Developer ensure that no sessions are lost if an Amazon EC2 instance fails?

• A. Use Amazon DynamoDB to perform scalable session hadling.
• B. Use Amazon SQS to save session data.
• C. Use sticky sessions with an Elastic Load Balancer target group.
• D. Use Elastic Load Balancer connection draining to stop sending requests to failing instances.

Answer: A

NEW QUESTION 50
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. The aws script does not have an executable file mode.
• B. The aws executable is not in the PATH environment variable.
• C. Incorrect AWS credentials were provided.
• D. Access to the aws executable has been denied to the installer.

Answer: B

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

NEW QUESTION 51
A company is building an application to track athlete performance using an Amazon DynamoDB table. Each item in the table is identified by a partition key (user_id) and a sort key (sport_name). The table design is shown below:

(Note: Not all table attributes are shown)
A Developer is asked to write a leaderboard application to display the top performers (user_id) based on the score for each sport_name.
What process will allow the Developer to extract results MOST efficiently from the DynamoDB table?

• A. Create a global secondary index with a partition key of sport_nameand a sort key of score, and get the results
• B. Use a DynamoDB query operation with the key attributes of user_idand sport_nameand order the results based on the score attribute.
• C. Use a DynamoDB scanoperation to retrieve scores and user_idbased on sport_name, and order the results based on the scoreattribute.
• D. Create a local secondary index with a primary key of sport_nameand a sort key of score and get the results based on the scoreattribute.

Answer: D

NEW QUESTION 52
A company has implemented AWS CodeDeploy as part of its cloud native CI/CD stack The company enables automatic rollbacks while deploying a new version of a popular web application from in place to Amazon EC2.
What occurs it the deployment of the new version fails due to code regression?

• A. A new deployment of the last known good version of the application is deployed with a new deployment ID
• B. The last known good deployment is automatically restored using the snapshot stored in Amazon S3
• C. CodeDeploy switches the Amazon Route 53 alias records back to the known good green deployment and terminates the failed blue deployment
• D. AWS CodePipeline promotes the most recent deployment with a SUCCEEDED status to production

Answer: C

NEW QUESTION 53
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