easyMultiple Choice
SSCP Practice Question: Is the primary purpose of network segmentation?
Which of the following is the primary purpose of network segmentation?
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
✓
Enhance security by isolating sensitive systems
The primary purpose of network segmentation is to enhance security by isolating sensitive systems and limiting lateral movement of threats. Option D is correct. Option A is incorrect because segmentation does not directly increase bandwidth. Option B is incorrect; while performance may improve due to reduced broadcast domains, security is the primary goal. Option C is incorrect because segmentation can complicate IP address management. Option E is incorrect because segmentation often increases hardware cost.
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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Increase bandwidth
Why it's wrong here
Segmentation does not increase the capacity of a link; bandwidth is determined by the physical media and interface speeds. It is tempting because dividing a large broadcast domain can reduce contention, but the primary purpose of segmentation is limiting lateral movement and enforcing access control between zones, not raising throughput.
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Improve network performance
Why it's wrong here
Performance gains can occur incidentally, but segmentation's primary purpose is security: containing compromise and restricting lateral movement between zones. It is tempting because splitting broadcast domains does reduce congestion, yet that is a side effect; the reason organisations segment is to enforce access control between groups of assets.
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Simplify IP address management
Why it's wrong here
Segmenting a network into zones or VLANs does not allocate or track addresses; IP address management is handled by DHCP and IPAM tooling instead. Segmentation is tempting because it does partition broadcast domains, but its primary purpose is limiting lateral movement and enforcing access control between groups of assets.
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Enhance security by isolating sensitive systems
Why this is correct
Segmenting a network places sensitive systems in separate zones behind controlled conduits, so lateral movement after a breach is contained. This directly satisfies the stem's isolation constraint, limiting blast radius rather than merely boosting throughput or simplifying addressing.
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Reduce hardware cost
Why it's wrong here
Segmentation typically adds switches, firewalls and management overhead, so it raises rather than lowers hardware cost. It is tempting because consolidating or virtualising infrastructure can cut spending, but the primary purpose of segmentation is containing breaches and restricting lateral movement, not reducing capital expenditure.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This SSCP 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 SSCP exam.