350-601 Network Practice Question
An engineer is designing a Layer 3 network for a data center using OSPF. The core switches are connected to aggregation switches. To optimize convergence, which OSPF network type should be used on the links between core and aggregation?
⚠ Common exam trap
Cisco often tests the misconception that broadcast is the default and therefore best for Ethernet links, but in a data center spine-leaf design, point-to-point is preferred because it eliminates DR/BDR election overhead and provides faster convergence.
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
✓
point-to-point
In a data center spine-leaf architecture, the links between core (spine) and aggregation (leaf) switches are typically point-to-point Layer 3 links. Configuring OSPF network type point-to-point (option D) on these interfaces eliminates the need for DR/BDR election, reduces hello and dead timers (default 10s/40s vs 30s/120s for broadcast), and allows faster convergence because OSPF immediately forms a neighbor adjacency without waiting for election delays.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
broadcast
Why it's wrong here
Default type but adds DR election overhead.
- ✗
non-broadcast
Why it's wrong here
Requires manual neighbor commands, not recommended for simple links.
- ✗
point-to-multipoint
Why it's wrong here
Used for hub-and-spoke topologies, not direct links.
- ✓
point-to-point
Why this is correct
Eliminates DR election, reduces convergence time.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 350-601 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 350-601 exam.