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300-410 Practice Question: Which TWO commands can be used to verify route…
Which TWO commands can be used to verify route summarization on a Cisco router running OSPF? (Choose TWO.)
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
✓
show ip route summary
The 'show ip route summary' command provides a summary of the routing table including the number of routes and the memory used, while 'show ip ospf border-routes' displays the OSPF route table entries for ABRs and ASBRs, which can include summary routes. 'show ip protocols' does not directly show summarization details. 'show ip route' alone does not summarize. 'show ip ospf database' shows the LSDB, not the summarized 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.
- ✓
show ip route summary
Why this is correct
This command provides a summary of the routing table, including the number of routes and memory usage, which helps verify summarization.
- ✓
show ip ospf border-routes
Why this is correct
This command displays OSPF routes to ABRs and ASBRs, including summary routes injected by those routers.
- ✗
show ip protocols
Why it's wrong here
This command shows routing protocol parameters and timers, but not the summarized routes themselves.
- ✗
show ip route
Why it's wrong here
This command shows the full routing table without summarization; it does not provide a summary view.
- ✗
show ip ospf database
Why it's wrong here
This command displays the OSPF link-state database, which is not a direct verification of route summarization.
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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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.