Can devices located in different physical locations share the same VLAN?

Can devices located in different physical locations share the same VLAN?

• A. False
• B. True
• C. Sometimes
• D. Never

Answer: (B)

VLANs are boundaries you create at Layer 2 that are identified by a VLAN ID, not by a single physical switch. Because of this, the same VLAN ID can be carried across multiple switches and even across different buildings if the switches are connected with trunk links that carry that VLAN. On trunk ports, frames are tagged with the VLAN ID, and on access ports they are untagged for that specific VLAN. This lets devices in separate physical locations behave as if they’re on the same local network, sharing the same broadcast domain, as long as the network path between them reliably carries that VLAN. So, devices located in different physical locations can indeed share the same VLAN, provided the switches are configured to carry that VLAN across the network with consistent VLAN IDs. If there’s no trunking or the VLAN IDs don’t match, sharing won’t happen.

VLANs are boundaries you create at Layer 2 that are identified by a VLAN ID, not by a single physical switch. Because of this, the same VLAN ID can be carried across multiple switches and even across different buildings if the switches are connected with trunk links that carry that VLAN. On trunk ports, frames are tagged with the VLAN ID, and on access ports they are untagged for that specific VLAN. This lets devices in separate physical locations behave as if they’re on the same local network, sharing the same broadcast domain, as long as the network path between them reliably carries that VLAN.

So, devices located in different physical locations can indeed share the same VLAN, provided the switches are configured to carry that VLAN across the network with consistent VLAN IDs. If there’s no trunking or the VLAN IDs don’t match, sharing won’t happen.