Describe the difference between a LAN switch/bridge and a router.

What will be an ideal response?

Bridges operate using MAC addresses. Bridges forward frames from LAN to LAN to let multiple physically separate LAN segments operate as one network. In a transparent bridge environment (usually associated with Ethernet LANs), bridges must learn the location of all stations on the network and forward frames based on routing tables. If a bridge doesn't recognize the MAC address of a destination
station, the bridge broadcasts the frame throughout the network.
Routers are more intelligent devices than bridges and use the network layer address (i.e., IP) to route packets, letting several logically distinct networks communicate with one another. A network layer protocol such as IP handles its routing function by examining a routing table; a routing protocol populates
the routing table with information. Bridges don't scale well to very large networks.