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350-501 Networking Practice Question

In IS-IS, which type of router is responsible for routing between different areas and also maintains a Level 1 Link State Database?

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

L1/L2 router

L1/L2 routers perform both intra-area and inter-area routing, maintaining both L1 and L2 LSDBs.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • L1/L2 router

    Why this is correct

    L1/L2 routers participate in both levels.

  • Level 2 router

    Why it's wrong here

    L2 routes only between areas.

  • Level 1 router

    Why it's wrong here

    L1 routes only within an area.

  • Area Border Router (ABR)

    Why it's wrong here

    ABR is an OSPF term, not IS-IS.

Visual reference

R1 R2 R3 R4 10 100 10 100 OSPF picks R1→R2→R4 (cost 20) over R1→R3→R4 (cost 200)

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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.