ISC2 CC Network Security Practice Question
Which layer of the OSI model is responsible for routing packets across 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
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Network layer
The Network layer (Layer 3) handles routing and logical addressing (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.
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Network layer
Why this is correct
The Network layer routes packets.
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Physical layer
Why it's wrong here
Physical layer transmits bits.
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Transport layer
Why it's wrong here
Transport handles segments and end-to-end delivery.
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Data Link layer
Why it's wrong here
Data Link handles frames and MAC addresses.
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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.