mediumMultiple ChoiceObjective-mapped
XK0-006 Practice Question: A DevOps engineer needs to ensure that a…
A DevOps engineer needs to ensure that a containerized web application always restarts automatically if the container exits unexpectedly. Which Docker run option should be used?
⚠ Common exam trap
CompTIA often tests the subtle distinction between `--restart=always` and `--restart=unless-stopped`, where candidates mistakenly choose `unless-stopped` thinking it provides the same automatic restart but without the risk of restarting after a manual stop, missing that the requirement explicitly says 'always restarts automatically' regardless of how the container exits.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
--restart=always
The `--restart=always` policy ensures that the container restarts regardless of the exit code or reason for termination, including unexpected crashes. This is the correct choice for a containerized web application that must maintain high availability by automatically recovering from any unexpected exit.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
--restart=on-failure
Why it's wrong here
Only restarts if container exits with non-zero code.
- ✗
--restart=unless-stopped
Why it's wrong here
Restarts except when container is stopped manually.
- ✗
--restart=no
Why it's wrong here
No restart policy.
- ✓
--restart=always
Why this is correct
Always restarts regardless of exit status.
Go deeper
Related to this question
About these practice questions
This XK0-006 question is part of Courseiva's 979-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This XK0-006 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the XK0-006 exam.