hardMultiple ChoiceObjective-mapped
300-410 Practice Question: An engineer configures BFD for EIGRP and also…
An engineer configures BFD for EIGRP and also applies an offset-list to increase the metric of a route. The BFD session is up, but the route with the offset-list is not being installed in the routing table. The engineer verifies that the offset-list is correctly configured. What is the most likely explanation?
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 offset-list increased the feasible distance beyond the advertised distance, making the route no longer feasible.
EIGRP offset-lists can increase the metric of a route, but they affect the feasible distance (FD), not the advertised distance (AD). If the offset-list increases the FD such that the route is no longer feasible (i.e., the FD exceeds the AD of the successor), the route may be removed from the topology table. BFD does not interact with offset-lists.
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 offset-list increased the feasible distance beyond the advertised distance, making the route no longer feasible.
Why this is correct
Correct. Offset-lists increase the FD, and if the FD exceeds the AD, the route becomes infeasible and is removed from the topology table.
- ✗
The offset-list is applied to the wrong interface, so it does not affect the route.
Why it's wrong here
Incorrect. If the offset-list is applied to the wrong interface, it would not affect the route, but the route would still be installed.
- ✗
The BFD session is flapping, causing EIGRP to remove the route.
Why it's wrong here
Incorrect. BFD flapping would cause EIGRP to remove all routes learned via that neighbor, not just the one with the offset-list.
- ✗
The offset-list is using a metric that exceeds the maximum hop count for EIGRP.
Why it's wrong here
Incorrect. EIGRP does not have a hop count limit; it uses composite metric.
Quick reference
Routing Protocol Comparison
| Protocol | Metric | Max Hops | Algorithm | Type |
|---|---|---|---|---|
| RIP v2 | Hop count | 15 | Bellman-Ford | Distance vector |
| OSPF | Cost (bandwidth) | Unlimited | Dijkstra (SPF) | Link state |
| EIGRP | Composite metric | Unlimited | DUAL | Hybrid |
| IS-IS | Cost | Unlimited | Dijkstra | Link state |
| BGP | Policy / attributes | Unlimited | Path vector | Path vector |
RIP's 15-hop limit makes it unsuitable for large networks. OSPF and EIGRP dominate modern enterprise deployments.
Go deeper
Related to this question
About these practice questions
This 300-410 question is part of Courseiva's 1,966-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.