What is the basic purpose of VLANs in MikroTik?

• A. VLANs merge multiple networks into one broadcast domain
• B. VLANs are used to increase WiFi speed
• C. VLANs isolate traffic by 802.1Q tags
• D. VLANs replace IP subnetting for routing

Answer: (C)

VLANs in MikroTik create separate logical networks on the same physical wiring by tagging frames with 802.1Q marks. This tagging makes each VLAN its own broadcast domain, so traffic from one VLAN doesn’t spill into another unless a router or layer-3 device is used to route between them. On MikroTik, you set up VLAN interfaces on top of physical ports and use trunk ports to carry many VLANs while access ports belong to a single VLAN, with the 802.1Q tag identifying the VLAN membership. The purpose is to isolate traffic for security and management, while still allowing controlled inter-VLAN routing when needed. They don’t merge networks into one broadcast domain, they don’t increase WiFi speed, and they don’t replace IP subnetting for routing.