EX188 Networking And Compose Practice Question
You need to troubleshoot name resolution between containers on a custom network. Which backend service does Podman utilize by default for container DNS resolution in modern rootless setups?
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
✓
aardvark-dns
Aardvark-dns is the authoritative DNS server used alongside netavark for Podman networking.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
nscd
Why it's wrong here
Nscd is a name service caching daemon for host glibc.
- ✓
aardvark-dns
Why this is correct
Aardvark-dns provides container name resolution on Podman networks.
- ✗
dnsmasq
Why it's wrong here
Dnsmasq was used in older libpod/CNI implementations, but modern netavark uses aardvark-dns.
- ✗
bind9
Why it's wrong here
Bind9 is a traditional enterprise DNS server, not used internally by default for CNI/netavark.
Visual reference
About these practice questions
This EX188 question is part of Courseiva's 296-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
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.