Question 1easymultiple choice
Open the full BGP breakdown →- A
20
eBGP routes have a default AD of 20.
- B
200
Why wrong: 200 is the default AD for iBGP.
- C
120
Why wrong: 120 is the default AD for RIP.
- D
110
Why wrong: 110 is the default AD for OSPF.
Question 21 of 2,152
Quick Answer
The answer is 20. In BGP, the default administrative distance for eBGP routes is set to 20, while iBGP routes are assigned a distance of 200, making eBGP routes significantly more preferred when both are present in the routing table. This difference exists because eBGP routes originate from external autonomous systems and are considered more reliable than iBGP routes, which are learned from internal peers and may carry less trustworthy path information. On the Cisco CCNP ENARSI 300-410 exam, this concept often appears in questions about route selection or redistribution, where a common trap is confusing eBGP’s distance with that of iBGP or other dynamic protocols like OSPF (110) or EIGRP (90). To avoid this, remember that external routes are more trusted than internal ones, so eBGP’s lower distance reflects that trust. A simple memory tip: “eBGP is 20, iBGP is 200—the bigger the number, the less the trust.”
300-410 BGP Troubleshooting Practice Question
This 300-410 practice question tests your understanding of bgp troubleshooting. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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.
In BGP, what is the default administrative distance for eBGP routes?
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
✓
20
The default administrative distance for eBGP is 20, while for iBGP it is 200. This means eBGP routes are more trusted than iBGP routes.
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.
- ✓
20
- ✗
200
- ✗
120
- ✗
110
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- 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 practitioner preparing for the 300-410 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which 300-410 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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BGP Troubleshooting — study guide chapter
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FAQ
Questions learners often ask
What does this 300-410 question test?
BGP Troubleshooting — This question tests BGP Troubleshooting — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: 20 — The default administrative distance for eBGP is 20, while for iBGP it is 200. This means eBGP routes are more trusted than iBGP routes.
What should I do if I get this 300-410 question wrong?
Identify which 300-410 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Same concept, more angles
1 more ways this is tested on 300-410
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. What is the default BGP administrative distance for routes learned from an external peer (eBGP) in Cisco IOS-XE?
medium- ✓ A.20
- B.200
- C.110
- D.120
Why A: Cisco IOS-XE assigns eBGP routes an administrative distance of 20 by default.
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Last reviewed: Jun 18, 2026
This 300-410 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 300-410 exam.
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