ISC2 CC Network Security Practice Question
Which OSI layer is responsible for routing packets based on IP addresses?
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) handles packet forwarding and routing using IP addresses.
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 3 – Network
Why this is correct
Network layer routes packets using IP addresses.
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Layer 1 – Physical
Why it's wrong here
Physical layer deals with bits and cables.
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Layer 4 – Transport
Why it's wrong here
Transport layer handles segmentation and reliable delivery.
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Layer 2 – Data Link
Why it's wrong here
Data Link layer uses MAC addresses and frames.
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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.