EX280 Cluster Installation And Management Practice Question
Which TWO files or directories are commonly configured or injected via MachineConfig objects for node customization? (Choose TWO)
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
✓
Custom files placed in arbitrary file paths on the node filesystem.
MachineConfigs can inject custom files into target paths and configure system files like SSH authorized keys.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Custom files placed in arbitrary file paths on the node filesystem.
Why this is correct
MachineConfigs support writing arbitrary files to node paths via ignition.
- ✗
Persistent Volume Claims (PVCs) for user applications.
Why it's wrong here
PVCs are application storage resources, not OS files configured via MachineConfig.
- ✗
Direct modifications to the Kubernetes API server binary code.
Why it's wrong here
API server binaries are managed by core operators, not node MachineConfigs.
- ✓
Authorized SSH keys for the core user.
Why this is correct
MachineConfigs support specifying cluster-wide SSH keys.
- ✗
Dynamic container image layer storage caches.
Why it's wrong here
Container image caches are managed by CRI-O, not injected via MachineConfig files.
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.