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XK0-006 Practice Question: Which TWO are standard methods to boot into…
Which TWO are standard methods to boot into rescue mode in a systemd-based Linux distribution?
⚠ Common exam trap
Test-takers frequently confuse 'rescue mode' with 'emergency mode' or legacy `init=/bin/bash` methods, failing to recognize that systemd defines `rescue.target` as the standard, service-aware rescue environment.
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
✓
Run systemctl rescue
`systemctl rescue` directly activates the `rescue.target`, which is the standard systemd mechanism to boot into a single-user, minimal rescue environment. This target mounts essential filesystems and starts basic services, providing a shell for troubleshooting without a full multi-user boot.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Run systemctl rescue
Why this is correct
Immediately switches the system to rescue.target.
- ✗
Add 'emergency' to kernel command line
Why it's wrong here
Boots into emergency mode, which is even more minimal than rescue.
- ✗
Append init=/bin/bash to kernel command line
Why it's wrong here
This boots into a minimal emergency shell, not the full rescue target.
- ✗
Run grub2-mkconfig
Why it's wrong here
Only regenerates GRUB configuration; does not change boot target.
- ✓
Set default target to rescue.target and reboot
Why this is correct
Changes the default boot target to rescue mode.
Go deeper
Related to this question
Learn chapter
Linux Fundamentals and History
Key term
User
A user is any person, system, or device that interacts with an IT service, resource, or identity system, typically authenticated through credentials and authorized to perform specific actions.
Key term
Linux
Linux is an open-source operating system that manages computer hardware and software, widely used in servers, desktops, and embedded systems.
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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.