350-501 BGP Extended Community Practice Question
Which TWO of the following are valid BGP extended community attributes? (Choose two.)
⚠ Common exam trap
Candidates often confuse Route Origin (standard community) with Route Target (extended community).
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
✓
Site of Origin (SoO)
Site of Origin (SoO) and Route Target (RT) are well-known BGP extended communities. Route Origin (RO) is a standard community, not an extended community. Standard and Large communities are also not extended communities. Thus, only SoO and RT are correct among the options, but the question asks for three; note that Color or Bandwidth are other valid extended communities not listed here.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Site of Origin (SoO)
Why this is correct
Correct. Site of Origin (SoO) is a BGP extended community used to prevent routing loops.
- ✓
Route Target (RT)
Why this is correct
Correct. Route Target (RT) is a BGP extended community used in MPLS VPNs to control route distribution.
- ✗
Route Origin (RO)
Why it's wrong here
Incorrect. Route Origin (RO) is a standard BGP community (32-bit), not an extended community.
- ✗
Standard community
Why it's wrong here
Incorrect. Standard community is a 32-bit value, not an extended community.
- ✗
Large community
Why it's wrong here
Incorrect. Large community is 96-bit, not extended.
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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.