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115
350-401 Architecture Practice Question
Match each routing protocol to its administrative distance.
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
✓
OSPF: 110
Administrative distances are used to select the best route when multiple routing protocols provide routes to the same destination.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
OSPF: 110
Why this is correct
OSPF uses an administrative distance of 110 by default.
- ✗
OSPF: 90
Why it's wrong here
Incorrect — 90 is the default administrative distance for EIGRP internal routes, not OSPF.
- ✓
EIGRP: 90
Why this is correct
EIGRP internal routes have a default administrative distance of 90.
- ✓
RIP: 120
Why this is correct
RIP uses an administrative distance of 120 by default.
- ✗
RIP: 110
Why it's wrong here
Incorrect — 110 is the administrative distance for OSPF, not RIP.
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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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 350-401 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 350-401 exam.