DevOps Foundations practice test: 10 free sample questions.

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1. 1What does a CI pipeline give a team that manual releases do not?

   Every change built and tested the same way, automatically, before it can shipFaster typing for developersFree cloud serversNo need for code review

2. 2A deploy breaks production at 2 a.m. What is the first move?

   Roll back to the last known good version, then investigateOpen a postmortem document immediatelyAdd more logging and redeploy the same changeWait until morning when the team is online

3. 3Why do teams put services in containers?

   The same image runs identically on a laptop, in test and in productionContainers make code run ten times fasterContainers remove the need for monitoringContainers are required by law

4. 4What is infrastructure as code in one sentence?

   Servers and networks defined in versioned files instead of clicked together by handWriting application code on a serverA programming language for routersBacking up code to a second disk

5. 5A disk fills up and a service crashes nightly. What is the DevOps response?

   Alert on disk usage early, rotate logs automatically, and fix the leakRestart the service every evening by handBuy a bigger disk and forget itBlame the night shift

6. 6What does a canary release do?

   Sends the new version to a small slice of traffic first and watches itReleases only on FridaysSkips testing for trusted developersDeploys to all users at once for speed

7. 7Where do application secrets (API keys, passwords) belong?

   In a secret manager or the platform's sealed store, never in gitIn the source code repository for visibilityIn a chat message pinned for the teamIn an email to new hires

8. 8What is the point of a runbook?

   A stranger can follow it at 3 a.m. to detect, escalate and recoverTo document every meeting the team heldTo list employee phone numbersTo satisfy auditors with paper nobody reads

9. 9A build passes locally but fails in CI. What do you check first?

   Differences between the two environments: versions, variables and secretsWhether the developer's laptop needs replacingWhether CI can be disabled for this projectThe office network speed

10. 10What does 'you build it, you run it' mean?

    The team that writes a service also owns its production behaviorDevelopers must work night shiftsOnly one person may touch productionOperations teams are abolished