Which technology combines multiple wired and wireless networks into a single logical network?

• A. Virtual Local Area Network (VLAN)
• B. Virtual Private Network (VPN)
• C. Wide Area Network (WAN)
• D. Local Area Network (LAN)

Answer: (A)

VLANs let devices on different physical segments—wired and wireless—act as if they’re on the same network. By placing those ports and access points into the same VLAN ID, traffic from both wired clients and wireless clients shares one logical network, including the same broadcast domain and IP space, even if they’re on separate switches or APs. Implemented with trunk links carrying 802.1Q tags, the VLAN keeps this single logical network consistent across the infrastructure while still allowing multiple, separate VLANs to exist for segmentation. This is why it’s the right fit for bringing multiple wired and wireless networks into one cohesive logical network. The other concepts describe different ideas: a VPN creates secure tunnels over the internet, a WAN covers wide geographic areas, and a LAN refers to a single physical local network.