aws devops interview questions Practice Exam 2025: Latest Questions

A DevOps team uses AWS CodePipeline to deploy a web application to Amazon ECS. They want each pipeline execution to create an isolated test environment, run integration tests, and then automatically delete the environment to minimize cost. Which approach is the MOST appropriate?

A company uses AWS CloudFormation to manage infrastructure. The security team requires that any change to IAM resources be reviewed and explicitly acknowledged before deployment. Which solution meets this requirement with the LEAST operational overhead?

An application running on Amazon EC2 instances behind an Application Load Balancer (ALB) is experiencing intermittent 5xx errors. The DevOps engineer needs to determine whether the errors originate from the ALB or the targets. Which combination provides the MOST direct visibility?

A company wants to ensure that secrets used by AWS Lambda functions are not stored in environment variables or source control. The secrets must be rotated automatically and retrieved at runtime. Which solution is BEST?

A team manages hundreds of AWS accounts using AWS Organizations. They need to centrally detect and automatically remediate when an S3 bucket is created with public access, without deploying custom agents. Which approach is MOST appropriate?

A company uses Amazon EKS and wants to standardize application deployments across teams. They need an approval gate before production deployments, and they want automated rollback if the deployment health checks fail. Which solution BEST meets these requirements?

After a new release, a service shows increased latency. The team uses Amazon CloudWatch metrics and logs, but they cannot correlate a single user request across multiple microservices (API, worker, database proxy). They need end-to-end request tracing with minimal code changes. What should they implement?

A workload runs in multiple Availability Zones and uses an Auto Scaling group (ASG). During an AZ outage simulation, the ASG did not replace instances quickly enough, causing capacity loss. The company wants faster recovery while preventing over-provisioning during normal operations. Which configuration change is BEST?

A security team requires that production changes be deployed only from a controlled CI/CD pipeline. Engineers must not be able to modify production resources directly, even if they have broad permissions in their own development accounts. The organization uses AWS Organizations with separate accounts for dev and prod. Which design BEST enforces this requirement?

A company uses EventBridge to route operational events to multiple targets, including an incident management system and an automated remediation Lambda function. During an outage, EventBridge experienced a surge of events, and some remediation actions executed multiple times, causing resource thrashing. The company needs to ensure remediation is executed at most once per unique incident while still processing all events. Which solution is MOST effective?

A DevOps team wants to be notified when an AWS CloudFormation stack update fails so they can automatically open an incident ticket in their ITSM tool. The team wants the solution to require minimal custom code and to work across accounts. Which solution meets these requirements?

A company uses AWS CodeDeploy to deploy an application to Amazon EC2 instances in an Auto Scaling group. The DevOps engineer must ensure that traffic is shifted only after health checks pass, and that failed deployments automatically roll back to the last known good version. Which configuration best meets these requirements?

A security team requires that all IAM policy changes be logged and that alerts be generated when a user creates an access key. The alert must include the identity and source IP address. Which solution provides this with the LEAST operational overhead?

An engineering team uses Terraform to manage AWS infrastructure. A recent apply accidentally deleted an S3 bucket used for audit logs. The company needs guardrails to prevent deletion of specific critical resources while still allowing Terraform to manage them. Which approach is MOST appropriate?

A microservices application publishes custom metrics from multiple AWS accounts into Amazon CloudWatch. The operations team wants a single dashboard in a central account and the ability to set alarms that can act on metrics from source accounts. Which solution meets these requirements?

A team manages hundreds of CloudFormation stacks across multiple regions. They want to automatically detect and remediate drift so that any stack that drifts from the template is returned to the expected configuration. Which solution is the MOST operationally efficient?

A company runs a stateful application on Amazon ECS with tasks spread across multiple Availability Zones. The application writes critical data to an Amazon EFS file system. During AZ impairments, the application experiences increased error rates and timeouts when reading from the file system. Which change MOST improves resiliency with minimal application changes?

A team uses Amazon EKS and wants to enforce that only signed container images from an internal Amazon ECR repository can be deployed to the cluster. They want an auditable, policy-based control that blocks noncompliant deployments at admission time. Which solution should they implement?

A production workload runs on Amazon EC2 instances behind an Application Load Balancer. The company wants to automatically respond to suspected instance compromise by isolating the instance from the network, preserving forensic evidence, and notifying the security team. Which solution provides the MOST robust automated response?

A company wants to reduce mean time to resolution for application issues in production. The team needs to correlate logs, metrics, and traces for a single user request across multiple services, without adding significant operational burden. Which approach best meets these requirements?

A company runs dozens of microservices on Amazon ECS. Each service has CloudWatch alarms that publish to a shared Amazon SNS topic. During incidents, engineers receive hundreds of duplicate notifications that make it difficult to identify the primary failing service. The company wants to reduce alert noise while still notifying responders quickly and grouping related alarms together. Which solution should a DevOps engineer implement?

A development team uses AWS CodePipeline with AWS CodeBuild to run integration tests that require a third-party API key. The team previously stored the key as an environment variable in the build project, but a security review requires that the key be encrypted, rotated, and not visible to developers or in build logs. Which approach meets these requirements with the LEAST operational overhead?

An operations team uses AWS CloudFormation to deploy environments. A recent update caused an outage because a change unintentionally replaced an Amazon RDS DB instance. The team wants to prevent destructive updates to critical resources while still allowing safe changes and automated deployments. Which action should the team take?

A company needs to automatically quarantine any Amazon EC2 instance that shows signs of credential compromise (for example, suspicious API calls from the instance role). The security team wants the response to be automated, auditable, and reversible. Which solution best meets these requirements?

A company uses Amazon Aurora with an application running across multiple Availability Zones. During an Availability Zone impairment, the application experienced long request timeouts even though Aurora failed over successfully. The company wants to improve resilience so the application can continue operating with minimal disruption during database failovers and transient errors. Which change is MOST likely to achieve this?