mediumMultiple ChoiceObjective-mapped
300-410 Practice Question: Runs the following command to troubleshoot a…
A network engineer runs the following command to troubleshoot a Route Summarization issue:
R1# show ip eigrp topology 10.0.0.0/16
IP-EIGRP topology entry for 10.0.0.0/16 State is Passive, Query origin flag is 1, 1 Successor(s), FD is 128576 Routing Descriptor Blocks:
10.1.1.2 (Serial0/0/0), from 10.1.1.2, Send flag is 0x0
Composite metric is (128576/156160), Route is Internal Vector metric: Minimum bandwidth is 10000 Kbit Total delay is 2000 microseconds Reliability is 255/255 Load is 1/255 Minimum MTU is 1500 Hop count is 2
What does this output indicate?
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 summary route 10.0.0.0/16 is installed in the routing table and reachable via 10.1.1.2.
This output shows the EIGRP topology table entry for the summary route 10.0.0.0/16. The state is Passive, meaning the route is stable and reachable. The presence of a successor and the metric details indicate that the summary route is being advertised and learned via EIGRP.
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 summary route 10.0.0.0/16 is installed in the routing table and reachable via 10.1.1.2.
Why this is correct
The output shows a valid successor and passive state, confirming the route is installed and reachable.
- ✗
The summary route is in active state, indicating a query is in progress.
Why it's wrong here
The state is Passive, not Active.
- ✗
The summary route is not being advertised because the FD is too high.
Why it's wrong here
The FD value is normal and does not prevent advertisement.
- ✗
The summary route is learned via redistribution, not summarization.
Why it's wrong here
The route is marked as Internal, indicating it is from within the same EIGRP AS.
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.