ISC2 CC Network Security Practice Question
Which of the following is a benefit of using VLANs in a network?
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
✓
Logical segmentation without additional hardware
VLANs allow logical segmentation of a network at Layer 2, improving security and reducing broadcast traffic without requiring additional physical switches.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Logical segmentation without additional hardware
Why this is correct
VLANs segment traffic logically on the same switch.
- ✗
Elimination of all broadcast traffic
Why it's wrong here
VLANs reduce but do not eliminate broadcast domains.
- ✗
Faster data transfer speeds
Why it's wrong here
VLANs do not inherently increase speed.
- ✗
Increased physical security
Why it's wrong here
VLANs do not directly increase physical security.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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