A company is using Amazon Elastic File System (Amazon EFS) to share a file system among several Amazon EC2 instances. As usage increases, users report that file retrieval from the EFS file system is slower than normal.
Which action should a SysOps administrator take to improve the performance of the file system?

• A.Enable encryption in transit on the file system.
• B.Resize the Amazon Elastic Block Store (Amazon EBS) volume of each of the EC2 instances.
• C.Identify any unused files in the file system, and remove the unused files.
• D.Configure the file system for Provisioned Throughput.

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A SysOps administrator must create a solution that automatically shuts down any Amazon EC2 instances that have less than 10% average CPU utilization for 60 minutes or more.
Which solution will meet this requirement In the MOST operationally efficient manner?

• A.Use AWS Systems Manager Run Command to get CPU utilization from each EC2 instance every 60 minutes. Initiate an instance shutdown if CPU utilization is less than 10%.
• B.Implement an Amazon CloudWatch alarm for each EC2 instance to monitor average CPU utilization. Set the period at 1 hour, and set the threshold at 10%. Configure an EC2 action on the alarm to stop the instance.
• C.Implement a cron job on each EC2 instance to run once every 60 minutes and calculate the current CPU utilization. Initiate an instance shutdown If CPU utilization is less than 10%.
• D.Install the unified Amazon CloudWatch agent on each EC2 instance, and enable the Basic level predefined metric set. Log CPU utilization every 60 minutes, and initiate an instance shutdown if CPU utilization is less than 10%.

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A SysOps administrator notices a scale-up event for an Amazon EC2 Auto Scaling group. Amazon CloudWatch shows a spike in the RequestCount metric for the associated Application Load Balancer. The administrator would like to know the IP addresses for the source of the requests.
Where can the administrator find this information?

• A.EC2 instance logs
• B.AWS CloudTrail logs
• C.Auto Scaling logs
• D.Elastic Load Balancer access logs

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A company has a critical serverless application that uses multiple AWS Lambda functions. Each Lambda function generates 1 GB of log data daily in tts own Amazon CloudWatch Logs log group. The company's security team asks for a count of application errors, grouped by type, across all of the log groups.
What should a SysOps administrator do to meet this requirement?

• A.Perform an Amazon RDS query that uses the SELECT and GROUP BY keywords.
• B.Perform an Amazon Athena query that uses the SELECT and GROUP BY keywords.
• C.Perform a CloudWatch Logs Insights query that uses the stats command and count function.
• D.Perform a CloudWatch Logs search that uses the groupby keyword and count function.

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A company uses Amazon Route 53 to manage the public DNS records for the domain example.com. The company deploys an Amazon CloudFront distribution to deliver static assets for a new corporate website. The company wants to create a subdomain that is named "static" and must route traffic for the subdomain to the CloudFront distribution.
How should a SysOps administrator create a new record for the subdomain in Route 53?

• A.Create an A record. Enter static.example.com as the record name. Enter the CloudFront distribution's domain name as an alias target.
• B.Create an A record. Enter static.cloudfront.net as the record name. Enter the CloudFront distribution's ID as an alias target.
• C.Create a CNAME record. Enter static.cloudfront.net as the record name. Enter the CloudFront distribution's public IP address as the value.
• D.Create a CNAME record. Enter static.example.com as the record name. Enter the CloudFront distribution's private IP address as the value.

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