350-501 Networking Practice Question
Which IS-IS router type maintains a full Layer 2 routing table of all areas and can act as a gateway between areas?
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
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Level 2
In IS-IS, Level 2 routers route between areas and maintain a complete L2 database. Level 1 routers route within an area, and Level 1/2 routers act as both, but the question asks for the type that maintains a full L2 routing table of all areas. Level 2 routers specifically perform inter-area routing.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Level 2
Why this is correct
Correct. Level 2 routers maintain the full L2 routing table and route between areas.
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Level 0
Why it's wrong here
There is no Level 0 in IS-IS.
- ✗
Level 1/2
Why it's wrong here
Level 1/2 routers act as both, but they maintain both L1 and L2 databases; the question specifically asks for the type that maintains a full L2 routing table of all areas.
- ✗
Level 1
Why it's wrong here
Level 1 only routes within its area.
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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.