- A
Configure a prefix list to match the routes from the neighbor.
The prefix list is used to identify which routes to match for the distance override.
- B
Use the distance eigrp command in router configuration mode.
Why wrong: The distance eigrp command sets the default AD for all internal and external EIGRP routes, not per neighbor.
- C
Use the distance command with the neighbor IP address and prefix list.
The syntax is: distance <ad-value> <source-ip> <wildcard> <prefix-list-name>.
- D
Configure an access list to permit the routes from the neighbor.
Why wrong: EIGRP uses prefix lists, not access lists, for the distance command.
- E
Use the redistribute command to change the administrative distance.
Why wrong: Redistribution does not change the AD of routes from a specific neighbor.
300-410 Administrative Distance Practice Question
This 300-410 practice question tests your understanding of administrative distance. 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.
Which TWO configuration steps are required to change the administrative distance for routes learned from a specific neighbor in EIGRP? (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
Configure a prefix list to match the routes from the neighbor.
To change the AD for routes from a specific EIGRP neighbor, you must first configure a prefix list to match the routes, then apply it using the distance command in EIGRP router configuration mode. The distance command can specify a different AD for routes matching a prefix list from a specific neighbor.
Key principle: Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Configure a prefix list to match the routes from the neighbor.
Why this is correct
The prefix list is used to identify which routes to match for the distance override.
Related concept
Authentication checks who the user is.
- ✗
Use the distance eigrp command in router configuration mode.
- ✓
Use the distance command with the neighbor IP address and prefix list.
Why this is correct
The syntax is: distance <ad-value> <source-ip> <wildcard> <prefix-list-name>.
Related concept
Authentication checks who the user is.
- ✗
Configure an access list to permit the routes from the neighbor.
- ✗
Use the redistribute command to change the administrative distance.
Why it's wrong here
Redistribution does not change the AD of routes from a specific neighbor.
Common exam traps
Common exam trap: authentication is not authorization
Logging in proves the user can authenticate. It does not automatically mean the user is allowed to enter privileged or configuration mode. Watch for AAA authorization, privilege level and command authorization details.
Trap categories for this question
Command / output trap
The distance eigrp command sets the default AD for all internal and external EIGRP routes, not per neighbor.
Detailed technical explanation
How to think about this question
This kind of question is testing the difference between identity and permission. A user may successfully log in to a router because authentication is working, but still fail to enter configuration mode because authorization is missing, misconfigured or mapped to a lower privilege level.
KKey Concepts to Remember
- Authentication checks who the user is.
- Authorization controls what the user is allowed to do after login.
- Privilege levels affect access to EXEC and configuration commands.
- AAA, TACACS+ and RADIUS can separate login success from command access.
TExam Day Tips
- Do not assume successful login means full administrative access.
- Look for words such as cannot enter configuration mode, privilege level, authorization or command access.
- Separate login problems from permission problems before choosing the answer.
Key takeaway
Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
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.
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related 300-410 questions on access control and AAA configuration.
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FAQ
Questions learners often ask
What does this 300-410 question test?
Administrative Distance — This question tests Administrative Distance — Authentication checks who the user is..
What is the correct answer to this question?
The correct answer is: Configure a prefix list to match the routes from the neighbor. — To change the AD for routes from a specific EIGRP neighbor, you must first configure a prefix list to match the routes, then apply it using the distance command in EIGRP router configuration mode. The distance command can specify a different AD for routes matching a prefix list from a specific neighbor.
What should I do if I get this 300-410 question wrong?
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related 300-410 questions on access control and AAA configuration.
What is the key concept behind this question?
Authentication checks who the user is.
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Last reviewed: Jun 18, 2026
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