Courseiva
← 350-501
Full test
Networking →mediumMultiple SelectObjective-mapped

350-501 Networking Practice Question

A service provider is configuring BGP route reflectors to scale iBGP. Which two mechanisms are used to prevent routing loops in a route reflector environment? (Choose two.)

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

✓

CLUSTER_LIST

BGP route reflectors use the CLUSTER_LIST attribute (which includes the cluster-id) and the ORIGINATOR_ID attribute to prevent loops. CLUSTER_LIST lists the cluster-ids that a route has passed through, and ORIGINATOR_ID identifies the originator of the route to prevent it from being reflected back.

Answer analysis

Option-by-option breakdown

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

  • ✓

    CLUSTER_LIST

    Why this is correct

    Correct. CLUSTER_LIST contains the cluster-ids and prevents loops.

  • ✓

    ORIGINATOR_ID

    Why this is correct

    Correct. ORIGINATOR_ID prevents a route from being reflected back to its originator.

  • ✗

    AS_PATH

    Why it's wrong here

    AS_PATH is used for eBGP loop prevention, not within the same AS for route reflectors.

  • ✗

    LOCAL_PREF

    Why it's wrong here

    LOCAL_PREF is a path selection attribute, not a loop prevention mechanism.

  • ✗

    NEXT_HOP

    Why it's wrong here

    NEXT_HOP is not used for loop prevention in route reflectors.

About these practice questions

One of 971 original 350-501 practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →

How Courseiva writes practice questions · Editorial policy

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.