hardMultiple ChoiceObjective-mapped
300-410 Practice Question: Runs the following command on Router R1: R1# show…
A network engineer runs the following command on Router R1:
R1# show ip eigrp topology 10.10.10.0/24
IP-EIGRP (AS 100): Topology entry for 10.10.10.0/24 State is Passive, Query origin flag is 1, 1 Successor(s), FD is 131072 Routing Descriptor Blocks:
10.1.1.2 (FastEthernet0/0), from 10.1.1.2, Send flag is 0x0
Composite metric is (131072/128256), Route is Internal Vector metric: Minimum bandwidth is 10000 Kbit Total delay is 100 microseconds Reliability is 255/255 Load is 1/255 Minimum MTU is 1500 Hop count is 1
R1# show ip route 10.10.10.0
Routing entry for 10.10.10.0/24 Known via "eigrp 100", distance 90, metric 131072, type internal Last update from 10.1.1.2 on FastEthernet0/0, 00:00:12 ago Routing Descriptor Blocks:
* 10.1.1.2, from 10.1.1.2, 00:00:12 ago, via FastEthernet0/0
Route metric is 131072, traffic share count is 1
R1# show ip eigrp interfaces Interface Peers Xmit Queue Mean Pacing Time Multicast Pending
Un/Reliable SRTT Un/Reliable Flow Timer Routes Fa0/0 1 0/0 10 0/10 50 0 Fa0/1 0 0/0 0 0/10 50 0
Based on this output, what is a likely issue?
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
✓
EIGRP neighbor on FastEthernet0/1 is not forming due to a route-map filtering updates.
The route is in the topology table and routing table, but the interface FastEthernet0/1 has 0 peers. This suggests that a route-map filtering EIGRP updates on FastEthernet0/1 may be preventing neighbor formation or route advertisement. The correct answer is that a route-map may be filtering EIGRP updates on FastEthernet0/1.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
EIGRP neighbor on FastEthernet0/1 is not forming due to a route-map filtering updates.
Why this is correct
FastEthernet0/1 has 0 peers, indicating no neighbor; a route-map could be blocking hello packets or updates.
- ✗
The route 10.10.10.0/24 is not in the routing table.
Why it's wrong here
It is present in the routing table.
- ✗
The EIGRP process is not running.
Why it's wrong here
The process is running as shown by the topology entry.
- ✗
The metric is too high for the route to be installed.
Why it's wrong here
The route is installed with metric 131072.
Visual reference
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.
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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.