305-300 Container Virtualization Practice Question
When using systemd-nspawn, you want to limit the memory usage of a container to 512MB. Which flag should be passed to the systemd-nspawn command?
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
✓
--memory-limit=512M
systemd-nspawn uses the --memory-limit flag to restrict the memory consumption of the spawned 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.
- ✗
--max-mem=512M
Why it's wrong here
This is not a valid systemd-nspawn flag.
- ✓
--memory-limit=512M
Why this is correct
This flag correctly limits the container memory usage.
- ✗
--cgroup-memory=512M
Why it's wrong here
While it relates to cgroups, the flag is not structured this way.
- ✗
--limit-mem=512M
Why it's wrong here
This is not a valid systemd-nspawn flag.
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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.