A VLAN (Virtual Local Area Network) segments a physical network into separate logical networks, enhancing security by isolating traffic.
Why Not A (Minimizes collision domains): VLANs manage broadcast domains, not collision domains.
Why Not B (Provides private access to cloud resources): VLANs operate within a local network, not cloud- specific.
Why Not C (Increases network address space): VLANs do not affect address space.
CompTIA A+ Exam Reference: Core 1 (220-1201), Section 2.6, VLAN concepts.