EX280 Networking And Network Policies Practice Question
An administrator needs to test DNS resolution from inside a running pod. Which command run inside a container uses the standard Linux DNS lookup utility?
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
✓
nslookup backend.production.svc.cluster.local
nslookup or dig are standard utilities used for DNS querying.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
nslookup backend.production.svc.cluster.local
Why this is correct
nslookup is widely available and queries DNS names successfully.
- ✗
route lookup backend
Why it's wrong here
route manages IP routing tables, not DNS resolution.
- ✗
oc get dns
Why it's wrong here
oc get dns is an administrator cluster command, not an in-pod diagnostic tool.
- ✗
ping -dns backend.production.svc.cluster.local
Why it's wrong here
ping does not support a -dns flag for diagnostic name resolution queries.
Visual reference
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.