easyMultiple Choice
300-410 Practice Question: Runs the following command to troubleshoot a…
A network engineer runs the following command to troubleshoot a Route Redistribution issue:
R1# show ip route summary
And sees the following output:
Route Source Networks Subnets Replicates Overhead Memory (bytes) connected 2 0 0 0 512 static 1 0 0 0 256 ospf 1 5 0 0 0 1280 eigrp 100 3 0 0 0 768 bgp 65000 2 0 0 0 512 internal 1 0 0 0 256 Total 14 0 0 0 3584
What does this output indicate?
⚠ Common exam trap
300-410 often tests the misconception that route counts in 'show ip route summary' reveal redistribution relationships — candidates must remember the summary only counts routes per protocol and says nothing about their origin or redistribution path.
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 router has 14 routes total, with OSPF contributing the most routes.
The 'show ip route summary' output lists the number of routes per source: connected (2), static (1), OSPF 1 (5), EIGRP 100 (3), BGP 65000 (2), and internal (1), totaling 14 routes. OSPF contributes the most routes (5), which matches option A exactly. The 'Subnets', 'Replicates', and 'Overhead' columns are all zero, indicating no classful subnetting anomalies or replication overhead in this 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 router has 14 routes total, with OSPF contributing the most routes.
Why this is correct
The summary counts 14 total routes across all sources, and OSPF's five networks exceed EIGRP's three, BGP's two and the other entries. It confirms redistribution populated the routing table, though the zero Subnets column shows only classful networks are present.
- ✗
The router is not redistributing any routes because the counts are low.
Why it's wrong here
The counts are not necessarily low; redistribution could be occurring. Without baseline, we cannot conclude.
- ✗
BGP is the only protocol with external routes.
Why it's wrong here
The output does not differentiate between internal and external routes.
- ✗
EIGRP has 3 routes, all of which are redistributed from OSPF.
Why it's wrong here
The output does not show the origin of routes; they could be internal or redistributed.
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.
Go deeper
Related to this question
Learn chapter
BGP Route Selection and Policy
Key term
Route Redistribution Between Protocols
Route redistribution between protocols is the process of taking routes learned from one routing protocol and injecting them into another routing protocol so that networks using different protocols can communicate.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Cisco exam blueprint
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.