hardMultiple ChoiceObjective-mapped
300-410 Practice Question: An EIGRP network is experiencing stuck-in-active…
An EIGRP network is experiencing stuck-in-active (SIA) routes after a link failure. Router R1 has the following relevant configuration: router eigrp 100 network 10.0.0.0 0.255.255.255 Router R2 shows: show ip eigrp topology 10.1.1.0/24 IP-EIGRP topology entry for 10.1.1.0/24 State: Active, 00:01:30, Reply status 10.2.2.2, 10.3.3.3 What is the root cause?
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
✓
Query scope is too wide; configure stub routing or summarization to limit queries.
The route is stuck-in-active because queries are sent to all neighbors and one or more are not replying. This can be due to query scope issue where routers in the query path have no route and keep querying further, causing timeout. The correct fix is to use summary routes or distribute-lists to limit query scope.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Query scope is too wide; configure stub routing or summarization to limit queries.
Why this is correct
EIGRP queries propagate to all neighbors; if a router has no alternate path, it queries further, causing SIA. Stub routing or summarization reduces query domain.
- ✗
The K-values are mismatched; check metric weights.
Why it's wrong here
K-value mismatch would prevent adjacency, not cause SIA.
- ✗
The network command includes too many interfaces; use passive-interface.
Why it's wrong here
Passive-interface prevents adjacencies but does not directly cause SIA.
- ✗
The hold time is too short; increase to 180 seconds.
Why it's wrong here
Hold time affects neighbor loss, not SIA due to query reply timeout.
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
About these practice questions
One of 1,966 original 300-410 practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →
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.