mediumMultiple ChoiceObjective-mapped
300-410 Practice Question: Examine the following configuration: interface…
Examine the following configuration:
interface GigabitEthernet0/0 ip address 192.168.1.1 255.255.255.0
bfd interval 50 min_rx 50 multiplier 5 !
router eigrp TEST network 192.168.1.0
bfd interface GigabitEthernet0/0 !
Which statement is true about BFD operation on this interface?
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
✓
BFD will detect a failure in 250 ms (5 x 50 ms).
The 'bfd interface' command under EIGRP enables BFD for that specific interface. The BFD session will negotiate timers; the multiplier of 5 means the session will declare a neighbor down after 5 * max(min_rx, negotiated interval) = 5 * 50 = 250 ms of missed packets.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
BFD will detect a failure in 250 ms (5 x 50 ms).
Why this is correct
Correct. The detection time is multiplier * the negotiated interval, which in this case is 5 * 50 ms = 250 ms.
- ✗
BFD will detect a failure in 50 ms because the interval is set to 50 ms.
Why it's wrong here
The detection time is multiplier * interval, not just the interval itself.
- ✗
BFD is enabled but only for EIGRP; it will not affect any other routing protocol.
Why it's wrong here
While this is true, it does not address the detection time calculation.
- ✗
The configuration is missing 'bfd all-interfaces' under EIGRP, so BFD will not work.
Why it's wrong here
The 'bfd interface' command is sufficient to enable BFD on a specific interface; 'bfd all-interfaces' is an alternative.
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.