ISC2 CC Network Security Practice Question
Which OSI layer is responsible for logical addressing and routing?
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
✓
Network layer
The Network layer (Layer 3) 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.
- ✗
Data Link layer
Why it's wrong here
Data Link uses MAC addresses and switches.
- ✓
Network layer
Why this is correct
Network layer (Layer 3) is responsible for IP addressing and routing.
- ✗
Transport layer
Why it's wrong here
Transport handles segments and reliability.
- ✗
Physical layer
Why it's wrong here
Physical layer deals with bits and cables.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CC practice question is part of Courseiva's free ISC2 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 CC exam.