EX280 Troubleshooting And Diagnostics Practice Question
An administrator observes that a specific node has high CPU utilization and wants to identify which processes or containers are consuming the most resources on that host directly. Which command-line tool executed inside an oc debug session on the node is best suited for interactive process monitoring?
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
✓
oc debug node/<node-name> -- chroot /host top
Running 'top' or 'htop' inside an oc debug chroot environment provides real-time CPU and memory consumption of processes on the host.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
oc exec node/<node-name> -- ps aux
Why it's wrong here
oc exec cannot target a node directly; it requires a pod.
- ✓
oc debug node/<node-name> -- chroot /host top
Why this is correct
Spawning a debug shell with chroot /host allows running standard Linux diagnostic utilities like top.
- ✗
oc adm monitor node
Why it's wrong here
No such command exists in OpenShift CLI.
- ✗
oc adm top node --use-protocol-buffers
Why it's wrong here
oc adm top provides cluster-level aggregated node metrics, not interactive process-level monitoring on the host.
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 EX280 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 EX280 exam.