305-300 Container Virtualization Practice Question
In systemd-nspawn, how can you execute a command inside a container that is already running?
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
✓
machinectl shell
'machinectl shell' is the command used to spawn a shell inside a running container.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
systemctl start
Why it's wrong here
This starts the unit, not the shell.
- ✗
systemd-nspawn -run
Why it's wrong here
This is not a valid command.
- ✓
machinectl shell
Why this is correct
This allows interacting with a running machine.
- ✗
nsenter
Why it's wrong here
nsenter is generic, but machinectl is the native tool for nspawn.
About these practice questions
This 305-300 question is part of Courseiva's 194-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 and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official LPI exam blueprint
This 305-300 practice question is part of Courseiva's free LPI 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 305-300 exam.