Drag and drop each OSPF packet type 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.
Discovers neighbors and maintains adjacency state
Contains a list of LSA headers for database synchronization
Requests specific LSAs from a neighbor
Sends one or more complete LSAs to a neighbor
Confirms receipt of LSU packets
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Hello: Discovers neighbors and maintains adjacency state
Hello packets discover and maintain neighbor relationships; DBD packets contain a summary of the LSDB; LSR packets request specific LSAs; LSU packets send full LSAs in response to LSRs; LSAck packets acknowledge receipt of LSUs.
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.