Question 828 of 2,152

Device Management →hardMultiple ChoiceObjective-mapped

300-410 Device Management Practice Question

This 300-410 practice question tests your understanding of device management. 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.

An engineer configures a BGP route reflector with two clients. One client advertises a prefix to the route reflector. The route reflector reflects the prefix to the other client, but the second client does not install it in its routing table. The second client has a lower administrative distance for the same prefix from another protocol. Which is the most likely explanation?

Clue words in this question

Noticing these words before you look at the options changes how you read each choice.

Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.

Question 1hardmultiple choice

Open the full BGP breakdown →

A
The second client has a route from another protocol (e.g., OSPF) with a lower administrative distance for the same prefix, so BGP route is not installed.
Administrative distance is used to select the best route when multiple protocols provide the same prefix; a lower AD wins.
B
The route reflector does not set the next-hop-self, so the next-hop is unreachable from the second client.
Why wrong: While next-hop unreachability is a common issue, the scenario specifies that the second client has a route from another protocol, indicating AD is the issue.
C
The route reflector is not configured as a client on the second router.
Why wrong: The scenario states the route reflector is configured with two clients.
D
The BGP synchronization rule is enabled and the prefix is not in the IGP.
Why wrong: Synchronization is disabled by default in modern IOS versions.

Full breakdown with real-world context →

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

✓

The second client has a route from another protocol (e.g., OSPF) with a lower administrative distance for the same prefix, so BGP route is not installed.

BGP route reflectors do not modify the path attributes, including the next-hop. If the next-hop is not reachable from the second client, the route will not be installed. However, a more subtle edge case is that the route reflector may reflect the route with the originator ID, but the client may have a route from another protocol with a lower AD, preventing the BGP route from being installed.

Key principle: OSPF neighbour adjacency depends on matching area, hello/dead timers, network type, and authentication — IP reachability alone is not enough.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

✓
The second client has a route from another protocol (e.g., OSPF) with a lower administrative distance for the same prefix, so BGP route is not installed.
Why this is correct
Administrative distance is used to select the best route when multiple protocols provide the same prefix; a lower AD wins.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
OSPF neighbours must agree on key parameters.
✗
The route reflector does not set the next-hop-self, so the next-hop is unreachable from the second client.
Why it's wrong here
While next-hop unreachability is a common issue, the scenario specifies that the second client has a route from another protocol, indicating AD is the issue.
✗
The route reflector is not configured as a client on the second router.
Why it's wrong here
The scenario states the route reflector is configured with two clients.
✗
The BGP synchronization rule is enabled and the prefix is not in the IGP.
Why it's wrong here
Synchronization is disabled by default in modern IOS versions.

Common exam traps

Common exam trap: OSPF can fail even when IP connectivity looks correct

OSPF neighbour formation depends on matching areas, timers, network type, authentication and passive-interface behaviour. Do not choose an answer only because the devices can ping.

Trap categories for this question

Scenario analysis trap
While next-hop unreachability is a common issue, the scenario specifies that the second client has a route from another protocol, indicating AD is the issue.

Detailed technical explanation

How to think about this question

OSPF questions usually test the details that control adjacency and route selection. Read the neighbour state, area, router ID and interface configuration before deciding what is wrong.

KKey Concepts to Remember

OSPF neighbours must agree on key parameters.
Router ID selection can affect neighbour relationships and LSDB output.
OSPF cost influences the preferred path.
A route can appear in OSPF information but not become the installed route.

TExam Day Tips

Check area mismatch first when OSPF adjacency fails.
Review passive interfaces when a network is advertised but no neighbour forms.
Use show ip ospf neighbor and show ip route clues carefully.

Key takeaway

OSPF neighbour adjacency depends on matching area, hello/dead timers, network type, and authentication — IP reachability alone is not enough.

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 OSPF neighbour requirements — matching area type, hello and dead timers, network type, stub flags, and authentication. Study show ip ospf neighbor states (INIT, 2-WAY, FULL). Then practise related 300-410 OSPF questions on adjacency and route selection.

Related 300-410 practice-question pages

Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.

Layer 3 Technologies practice questions

Practise 300-410 questions linked to Layer 3 Technologies.

EIGRP Troubleshooting practice questions

Practise 300-410 questions linked to EIGRP Troubleshooting.

OSPF Troubleshooting (v2/v3) practice questions

Practise 300-410 questions linked to OSPF Troubleshooting (v2/v3).

BGP Troubleshooting practice questions

Practise 300-410 questions linked to BGP Troubleshooting.

Route Redistribution practice questions

Practise 300-410 questions linked to Route Redistribution.

Policy-Based Routing (PBR) practice questions

Practise 300-410 questions linked to Policy-Based Routing (PBR).

VRF-Lite practice questions

Practise 300-410 questions linked to VRF-Lite.

Route Maps and Route Filtering practice questions

Practise 300-410 questions linked to Route Maps and Route Filtering.

Administrative Distance practice questions

Practise 300-410 questions linked to Administrative Distance.

Route Summarization practice questions

Practise 300-410 questions linked to Route Summarization.

Bidirectional Forwarding Detection (BFD) practice questions

Practise 300-410 questions linked to Bidirectional Forwarding Detection (BFD).

VPN Technologies practice questions

Practise 300-410 questions linked to VPN Technologies.

Practice this exam

Start a free 300-410 practice session

Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.

10 questions 20 questions 30 questions 50 questions Timed 30

300-410 practice-test guide →Study guide →Browse all practice tests

FAQ

Questions learners often ask

What does this 300-410 question test?

Device Management — This question tests Device Management — OSPF neighbours must agree on key parameters..

What is the correct answer to this question?

The correct answer is: The second client has a route from another protocol (e.g., OSPF) with a lower administrative distance for the same prefix, so BGP route is not installed. — BGP route reflectors do not modify the path attributes, including the next-hop. If the next-hop is not reachable from the second client, the route will not be installed. However, a more subtle edge case is that the route reflector may reflect the route with the originator ID, but the client may have a route from another protocol with a lower AD, preventing the BGP route from being installed.

What should I do if I get this 300-410 question wrong?

Are there clue words in this question I should notice?

Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.

What is the key concept behind this question?

OSPF neighbours must agree on key parameters.

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 →

How Courseiva writes practice questions · Editorial policy

Keep practising

Question Discussion

Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.

Loading comments…

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.