Routed backbone-switched backbone and a VLAN

Question

Describe routed backbone, a switched backbone, and a VLAN. Explain what is the finest practice backbone design of nowadays and why?

Answer 1

Routed backbone: This is a type of network which moves packets along the backbone based on their network layer address that is, three layer address

Switched backbone: In this type of network a router is replaced by switch and that router is reconfigured to support the traffic from the WAN

VLAN: In Virtual LAN architecture intelligent and high speed switches and computers are assigned to LAN segments by software rather than hardware.

The best practices backbone design today is VLAN because of its advantages like,

• Ease of administration
• Reduction in network traffic
• Confinement of broadcast domains 
• Better security and network reliability