The resources for a business -critical, three -tier web application are expressed in a series of AWS CloudFormation templates. The application is using Amazon RDS for data and Amazon ElastiCache for session state. Users have reported degraded performance in the application. A DevOps Engineer notices that the T2 instance type is being used for the application tier and CPU usage is at 100% in Amazon CloudWatch. What process should the Engineer follow to restore operations with the LEAST amount of distribution to the end users?
A company has developed an AWS Lambda function that handles orders received through an API. The company is using AWS CodeDeploy to deploy the Lambda function as the final stage of a CI/CD pipeline. A DevOps Engineer has notices there are intermittent failures of the ordering API for a few seconds after deployment. After some investigation, the DevOps Engineer believes the failures are due to database changes the CloudFormation stack for the application lambda function begins executing. How should the DevOps Engineer overcome this?
A mobile application running on eight Amazon EC2 instances is relying on a third -party API endpoint. The thirdparty service has a high failure rate because of limited capacity, which is expected to be resolved in a few weeks. In the meantime , the mobile application developers have added a retry mechanism and are logging failed API requests. A DevOps Engineer must automate the monitoring of application logs and count the specific error messages; if there are more than 10 errors within a 1- minute window, the system must issue an alert. How can the requirements be met with MINIMAL management overhead?
A DevOps Engineer has several legacy applications that all generate different log formats. The Engineer must standardize the formats before writing them to Amazon S3 for querying and analysis. How can this requirement be met at the LOWEST cost?
A company needs to introduce automatic DNS failover for a distributed web application to a disaster recovery or standby installation. The DevOps Engineer plans to configure Amazon Route 53 to provide DNS routing to alternate endpoint in the event of an application failure. What steps should the Engineer take to accomplish this? (Select TWO.)
To run an application, a DevOps Engineer launches an Amazon EC2 instances with public IP addresses in a public subnet. A user data script obtains the application artifacts and installs them on the instances upon launch. A change to the security classification of the application now requires the instances to run wi th no access to the Internet. While the instances launch successfully and show as healthy, the application does not seem to be installed. Which of the following should successfully install the application while complying with the new rule?
