Which statement correctly describes broadcast behavior within VLANs?

• A. Broadcast frames cross VLAN boundaries by default.
• B. Broadcast frames are forwarded to all devices in the entire network.
• C. Broadcast frames are contained within the same VLAN; inter-VLAN broadcast requires routing.
• D. Broadcast frames are never used on switched networks.

Answer: (C)

Broadcasts stay inside the same VLAN because a VLAN creates a separate broadcast domain on a switched network. When a device sends a broadcast, the switch floods that frame only to ports in the same VLAN, so every device in that VLAN sees it, but devices in other VLANs do not. If you need a broadcast to reach another VLAN, inter-VLAN routing is required, done by a router or a layer-3 switch.

So this statement is best because it accurately describes how VLANs isolate broadcast domains and why crossing VLAN boundaries needs routing. The other options fail because broadcasts do not跨 VLAN boundaries by default, they are not sent to every device across the entire network, and broadcasts are indeed used on switched networks (for things like ARP within a VLAN).