Drag and drop each OSPF router role on the left to its matching function on the right.
Drag a concept onto its matching description — or click a concept then click the description.
Generates Type 2 Network LSA and maintains full adjacencies with all routers on the segment
Becomes DR if the current DR fails; also maintains full adjacencies
Forms adjacencies only with DR and BDR; does not form full adjacencies with other DROTHERs
Redistributes routes from other routing protocols into OSPF
Connects two or more OSPF areas and advertises inter-area routes
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
DR: Generates Type 2 Network LSA and maintains full adjacencies with all routers on the segment
DR (Designated Router) generates Network LSAs and manages adjacencies on multi-access networks; BDR (Backup DR) takes over if the DR fails; DROTHER routers form full adjacencies only with DR and BDR; ASBR redistributes routes from other protocols; ABR connects multiple areas.
Visual reference
Quick reference
| 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 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.