350-501 Networking Practice Question
Which BGP attribute is used to indicate the preference of a route within an AS and is propagated to iBGP peers but not to eBGP peers by default?
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
✓
LOCAL_PREF
LOCAL_PREF is a well-known discretionary attribute that indicates the degree of preference for a route within an AS. It is sent to iBGP peers but not to eBGP peers by default.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
WEIGHT
Why it's wrong here
Weight is a Cisco-specific attribute, local to the router, and is not propagated.
- ✓
LOCAL_PREF
Why this is correct
Correct. LOCAL_PREF is used for route preference within an AS.
- ✗
MED
Why it's wrong here
MED is exchanged between ASes to influence inbound traffic.
- ✗
AS_PATH
Why it's wrong here
AS_PATH is used for loop prevention and path selection, not preference within AS.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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