Infrastructure and Reliability Engineering CT-QDO Practice Questions (Page 3)

Questions 11–15

1. 11application · medium

   A company wants to adopt Chaos Engineering to improve system resilience. They are concerned about causing outages in production. What is the most appropriate first step?

   • AOnly run experiments during maintenance windows to minimize impact
   • BRun experiments in a staging environment that mirrors production
   • CDisable all monitoring and alerting to avoid false alarms during experiments
   • DInject failures directly into production to see what happens
   Reveal Solution Discussion Select an answer first
2. 12application · medium

   A DevOps team wants to add a Chaos Engineering step to their CI/CD pipeline. They want to ensure that if the experiment fails, the deployment is not released. Which pipeline design is best?

   • ARun the experiment as a gate before the deployment step, and fail the pipeline if the experiment fails
   • BRun the experiment only in the staging environment and ignore the results
   • CRun the experiment in a separate pipeline that is not connected to the deployment
   • DRun the experiment after the deployment and only log the results
   Reveal Solution Discussion Select an answer first
4. 13foundation · easy

   What is the primary purpose of Chaos Engineering?

   • ATo randomly delete production data to test backup recovery
   • BTo intentionally inject failures into a system to uncover weaknesses and improve resilience
   • CTo automatically fix any system failure without human intervention
   • DTo simulate user traffic to test system performance
   Reveal Solution Discussion Select an answer first
5. 14application · medium

   A team uses Terraform to manage infrastructure. They notice that running `terraform apply` sometimes makes unintended changes to resources that were not part of the current change. What is the most likely cause and best practice to prevent this?

   • AThe state file is not stored remotely, so multiple team members are overwriting it
   • BThe team is using the `-auto-approve` flag, which skips the plan review
   • CThe team is not using modules, so all resources are in one large file
   • DThe configuration files are not formatted with `terraform fmt`
   Reveal Solution Discussion Select an answer first
6. 15expert · hard

   A team uses Gremlin to run Chaos Engineering experiments. They want to integrate these experiments into their CI/CD pipeline. They are concerned that the experiments might fail due to environmental issues, not actual code problems, causing false alarms. What is the best way to handle this?

   • ARun experiments only in production, where the environment is stable
   • BDisable the pipeline failure and only log the results
   • CUse a 'steady state' hypothesis that defines normal behavior, and only fail the pipeline if the experiment deviates from it
   • DRun experiments only on a schedule, not in the pipeline
   Reveal Solution Discussion Select an answer first