EX188 Storage And Configuration Practice Question
An administrator runs a container with a SELinux-relabeled host directory mount using the Z option, but multiple containers need to share write access to this exact same volume. Which option should be used instead?
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
✓
podman run -v /host/data:/data:z
The z option (lowercase z) shares SELinux content among multiple containers, whereas Z (uppercase Z) treats the content as private and unshared.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
podman run -v /host/data:/data:O
Why it's wrong here
The O flag is used for overlay mounts, not SELinux sharing.
- ✗
podman run -v /host/data:/data:Z
Why it's wrong here
Uppercase Z makes the volume private to a single container.
- ✓
podman run -v /host/data:/data:z
Why this is correct
Lowercase z relabels content so multiple containers can share the volume.
- ✗
podman run -v /host/data:/data:shared
Why it's wrong here
'shared' is a mount propagation flag, not the SELinux multi-container sharing flag.
About these practice questions
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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 Red Hat exam blueprint
This EX188 practice question is part of Courseiva's free Red Hat 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 EX188 exam.