350-501 Networking Practice Question
In IS-IS, which type of LSP is used to advertise prefix information for IPv4 and IPv6 in a modern SP network that supports traffic engineering?
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
✓
TLV 135 (Extended IP Reachability)
TLV 135 for IPv4 (extended IP reachability) and TLV 236 for IPv6 (IPv6 reachability) are used in IS-IS for prefix advertisement.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
TLV 2 (IS Neighbors)
Why it's wrong here
TLV 2 advertises IS-IS neighbors.
- ✗
TLV 1 (Area Addresses)
Why it's wrong here
TLV 1 advertises area addresses, not prefixes.
- ✓
TLV 135 (Extended IP Reachability)
Why this is correct
TLV 135 carries IPv4 prefixes with wide metrics.
- ✗
TLV 22 (IS Extended Neighbors)
Why it's wrong here
TLV 22 carries neighbor information with extended metrics.
Go deeper
Related to this question
About these practice questions
Courseiva writes every 350-501 question from scratch — 971 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 350-501 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 350-501 exam.