easyMultiple ChoiceObjective-mapped
300-410 Practice Question: Runs the following command on Router R9: R9# show…
A network engineer runs the following command on Router R9:
R9# show ip route 192.168.50.0
Routing entry for 192.168.50.0/24 Known via "ospf 1", distance 110, metric 20 Redistributing via ospf 1 Last update from 10.0.0.1 on GigabitEthernet0/0, 00:00:10 ago Routing Descriptor Blocks:
* 10.0.0.1, from 10.0.0.1, 00:00:10 ago, via GigabitEthernet0/0
Route metric is 20, traffic share count is 1
R9 also has an EIGRP route for the same prefix with distance 90 and metric 28160. Which route will be installed?
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 EIGRP route will be installed because it has a lower administrative distance.
EIGRP internal routes have a default administrative distance of 90, which is lower than OSPF's default distance of 110. Therefore, the EIGRP route will be preferred and installed in the routing table.
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 OSPF route will be installed because it has a lower metric.
Why it's wrong here
Administrative distance is considered before metric. EIGRP has a lower distance (90) than OSPF (110), so EIGRP is preferred.
- ✓
The EIGRP route will be installed because it has a lower administrative distance.
Why this is correct
EIGRP's distance of 90 is lower than OSPF's 110, so the EIGRP route is preferred.
- ✗
Both routes will be installed for load balancing.
Why it's wrong here
Load balancing requires equal administrative distance. The distances differ (90 vs 110).
- ✗
Neither route will be installed due to a conflict.
Why it's wrong here
The EIGRP route will be installed.
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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Same concept, more angles
1 more way this is tested on 300-410
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A network engineer runs the following command on Router R6: R6# show ip route 10.0.0.0 Routing entry for 10.0.0.0/8 Known via "eigrp 100", distance 90, metric 28160 Redistributing via eigrp 100 Last update from 192.168.1.1 on GigabitEthernet0/0, 00:00:10 ago Routing Descriptor Blocks: * 192.168.1.1, from 192.168.1.1, 00:00:10 ago, via GigabitEthernet0/0 Route metric is 28160, traffic share count is 1 Additionally, an OSPF route for the same prefix is learned with distance 110. Which route will be installed in the routing table?
easy- A.The OSPF route will be installed because it has a lower metric.
- ✓ B.The EIGRP route will be installed because it has a lower administrative distance.
- C.Both routes will be installed for load balancing.
- D.Neither route will be installed due to a conflict.
Why B: EIGRP internal routes have a default administrative distance of 90, which is lower than OSPF's default distance of 110. Therefore, the EIGRP route will be preferred and installed in the routing table.
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.