200-901 Network Fundamentals Practice Question
In the OSI model, which layer is responsible for logical addressing and routing of packets between networks?
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
✓
Layer 3 (Network)
Layer 3 (Network layer) handles IP addressing and routing decisions.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Layer 1 (Physical)
Why it's wrong here
Layer 1 deals with bits and physical media.
- ✓
Layer 3 (Network)
Why this is correct
Correct. Layer 3 uses IP addresses and routers.
- ✗
Layer 4 (Transport)
Why it's wrong here
Layer 4 manages end-to-end communication and segmentation.
- ✗
Layer 2 (Data Link)
Why it's wrong here
Layer 2 uses MAC addresses and switches for local delivery.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 200-901 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 200-901 exam.