350-501 Networking Practice Question
An engineer is configuring BGP route reflectors to scale iBGP. Which TWO attributes are used to prevent routing loops in a route reflector cluster? (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
✓
ORIGINATOR_ID
CLUSTER_LIST and ORIGINATOR_ID are used to prevent loops. CLUSTER_LIST is a sequence of cluster IDs; ORIGINATOR_ID identifies the originator.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
ORIGINATOR_ID
Why this is correct
ORIGINATOR_ID prevents loops within a cluster.
- ✗
NEXT_HOP
Why it's wrong here
NEXT_HOP is not a loop prevention mechanism.
- ✗
LOCAL_PREF
Why it's wrong here
LOCAL_PREF is a path selection attribute.
- ✗
AS_PATH
Why it's wrong here
AS_PATH is used for eBGP loops, not iBGP reflectors.
- ✓
CLUSTER_LIST
Why this is correct
CLUSTER_LIST is used to detect loops across clusters.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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