mediumMultiple 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 route 10.1.1.0
Routing entry for 10.1.1.0/24 Known via "eigrp 100", distance 170, metric 2560000 Redistributing via eigrp 100 Advertised by eigrp 100 (self originated) Last update from 10.2.2.2 on GigabitEthernet0/1, 00:00:10 ago Routing Descriptor Blocks:
* 10.2.2.2, from 10.2.2.2, 00:00:10 ago, via GigabitEthernet0/1
Route metric is 2560000, traffic share count is 1 Total delay is 100 microseconds, minimum bandwidth is 100000 Kbit Reliability 255/255, minimum MTU 1500 Loading 1/255, Hops 1
Based on this output, what is the problem?
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 route is redistributed into EIGRP from another protocol, as indicated by the distance of 170 and the 'self originated' message.
The output shows a route learned via EIGRP with an administrative distance of 170, which is the default for external EIGRP routes. The route is marked as 'Redistributing via eigrp 100' and 'Advertised by eigrp 100 (self originated)', indicating that this route was redistributed into EIGRP from another protocol. The problem is that the route is both learned and redistributed by the same router, which could cause a routing loop if not filtered.
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 route 10.1.1.0/24 is an internal EIGRP route because the administrative distance is 90.
Why it's wrong here
The distance is 170, which is for external EIGRP routes.
- ✓
The route is redistributed into EIGRP from another protocol, as indicated by the distance of 170 and the 'self originated' message.
Why this is correct
The distance of 170 and the 'self originated' flag indicate redistribution into EIGRP.
- ✗
The route is learned from a neighbor with a metric of 2560000, which is the default for redistributed routes.
Why it's wrong here
The metric is 2560000, but it is not necessarily the default; it is the metric set during redistribution.
- ✗
The route is not being advertised to any EIGRP neighbors because it is marked as 'self originated'.
Why it's wrong here
The 'self originated' flag means the router originated the route, but it can still be advertised to neighbors.
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.