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CompTIA Network+ N10-009 · Domain 4: Network security

Network segmentation enforcement for IoT, IIoT, SCADA/ICS/OT, guest and BYOD

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Last reviewed September 25, 2026 · Leer en español

Some devices and users should never share a flat network with your critical systems. Internet of Things gadgets, industrial controllers, guests and personal devices each bring different risks, and segmentation lets you connect them while containing those risks. Network+ asks you to recognise these groups, understand why each is risky, and choose the controls that separate them. The underlying idea is least privilege at the network level: every group gets exactly the connectivity it needs and nothing more.

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