This 350-401 practice question tests your understanding of bgp. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
router bgp 65000
bgp router-id 10.0.0.1
neighbor 10.0.0.2 remote-as 65000
!
Which statement about this configuration is true?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
This is an iBGP session because the remote AS matches the local AS.
This configuration establishes an iBGP session because the local AS number (65000) matches the remote AS number (65000). In BGP, when both routers share the same AS, the session is classified as internal BGP (iBGP), regardless of the IP addressing scheme used.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
This is an iBGP session because the remote AS matches the local AS.
Why this is correct
Correct. When remote-as equals the local AS, it is iBGP.
Related concept
Read the scenario before looking for a memorised answer.
✗
This is an eBGP session because the neighbor IP is in a different subnet.
The router will automatically set next-hop-self for routes sent to this neighbor.
Why it's wrong here
Incorrect. next-hop-self is not enabled by default for iBGP.
✗
The configuration is invalid because iBGP requires a loopback interface.
Why it's wrong here
Incorrect. iBGP can use any interface; loopback is common but not required.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the distinction between iBGP and eBGP based solely on AS numbers, leading candidates to mistakenly think subnet differences or interface types determine the session type.
Detailed technical explanation
How to think about this question
In iBGP, the next-hop attribute is not changed by default when advertising routes to iBGP peers, which can cause reachability issues if the next-hop is not directly connected. Additionally, iBGP requires a full mesh or route reflectors to avoid loops, as the AS_PATH is not modified within the same AS. This configuration uses a direct interface IP (10.0.0.2), which is simpler but less resilient than using loopback addresses with multiple paths.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A network engineer at a university connects two campus buildings via a fibre link. Both routers run OSPF, but no adjacency forms — even though both routers can ping each other. The engineer finds one router is in area 0 and the other in area 1. OSPF adjacency requires matching area numbers, hello/dead timers, and network type. IP reachability alone is not enough.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
BGP — This question tests BGP — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: This is an iBGP session because the remote AS matches the local AS. — This configuration establishes an iBGP session because the local AS number (65000) matches the remote AS number (65000). In BGP, when both routers share the same AS, the session is classified as internal BGP (iBGP), regardless of the IP addressing scheme used.
What should I do if I get this 350-401 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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