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 eigrp topology 10.0.0.0 255.255.252.0
IP-EIGRP (AS 100): Topology entry for 10.0.0.0/22 State: Passive, Origin: Internal, Metric [90/2172416], Tag 0 Number of successors: 1 FD is 2172416, Serno: 5 Route is Summary Advertised by R2 (via Serial0/0/0) Reply status: 0
Based on this output, what is true about the route 10.0.0.0/22?
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 a summary route learned from R2.
The 'Route is Summary' line indicates this is a summary route in the EIGRP topology table. The output shows it is passive and has a successor, confirming it is a valid summary route.
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 is a summary route generated by R1.
Why it's wrong here
The route is advertised by R2, not generated by R1.
- ✓
The route is a summary route learned from R2.
Why this is correct
The output shows 'Advertised by R2' and 'Route is Summary', indicating it is a summary route received from neighbor R2.
- ✗
The route is an external route redistributed into EIGRP.
Why it's wrong here
The origin is Internal, not External.
- ✗
The route is in active state and being queried.
Why it's wrong here
The state is Passive, not Active.
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
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