easyMultiple ChoiceObjective-mapped
300-410 Practice Question: The default value of the RA lifetime (Router…
What is the default value of the RA lifetime (Router Lifetime) in IPv6 Router Advertisements on Cisco IOS-XE?
⚠ Common exam trap
Cisco often tests the distinction between the Router Advertisement interval (default 200 seconds) and the Router Lifetime (default 1800 seconds), leading candidates to confuse the two and incorrectly select 600 seconds (the default MaxRtrAdvInterval) or 200 seconds (the default MinRtrAdvInterval).
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
✓
1800 seconds
The default Router Lifetime (RA lifetime) in IPv6 Router Advertisements on Cisco IOS-XE is 1800 seconds (30 minutes). This value is defined in RFC 4861 and indicates how long the router should be considered as a default gateway by hosts. It is three times the default Router Advertisement interval (200 seconds), ensuring hosts have sufficient time to detect a router's absence.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
600 seconds
Why it's wrong here
600 seconds is the default maximum RA interval, not the Router Lifetime.
- ✓
1800 seconds
Why this is correct
Correct. The default Router Lifetime is 1800 seconds on Cisco IOS-XE.
- ✗
3600 seconds
Why it's wrong here
3600 seconds is not the default; it is sometimes used but not the Cisco default.
- ✗
0 seconds
Why it's wrong here
0 seconds is used to indicate that the router is not a default gateway, but it is not the default value.
Go deeper
Related to this question
About these practice questions
Courseiva writes every 300-410 question from scratch — 1,966 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
JA
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.