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300-410 Practice Question: Which TWO statements about the 'ip domain-lookup'…
Which TWO statements about the 'ip domain-lookup' and DNS configuration on a Cisco IOS router are true? (Choose TWO.)
⚠ Common exam trap
Many exam-takers assume 'ip domain-lookup' is disabled by default (Option A) because they recall it must be explicitly enabled for certain features, but in fact it is enabled by default on most IOS versions.
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
✓
The 'ip name-server' command can specify up to six DNS servers.
The 'ip name-server' command on a Cisco IOS router can specify up to six DNS servers, which the router will query in order when resolving hostnames. This is a standard limitation documented in Cisco IOS configuration guides.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The 'ip domain-lookup' command is disabled by default on Cisco IOS routers.
Why it's wrong here
Incorrect. The 'ip domain-lookup' command is enabled by default. It must be explicitly disabled with 'no ip domain-lookup' if DNS resolution is not desired.
- ✓
The 'ip name-server' command can specify up to six DNS servers.
Why this is correct
Correct. The 'ip name-server' command allows configuring up to six DNS server addresses. The router will query them in order.
- ✓
The 'ip domain-list' command adds a domain suffix to the search list for DNS queries.
Why this is correct
Correct. The 'ip domain-list' command appends a domain suffix to unqualified hostnames (those without a dot) during DNS resolution. Multiple domain lists can be configured.
- ✗
The 'ip host' command creates a dynamic DNS entry that can be overwritten by a DNS server.
Why it's wrong here
Incorrect. The 'ip host' command creates a static host entry in the local host table. Static entries are not overwritten by DNS responses; they take precedence over dynamic resolution.
- ✗
The 'show hosts' command displays only statically configured host entries.
Why it's wrong here
Incorrect. The 'show hosts' command displays both static and dynamically learned (via DNS) host entries, including their addresses and flags indicating how they were learned.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 300-410 practice question is part of Courseiva's free Cisco 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 300-410 exam.