Difference between a hub and a switch

Difference between a hub and a switch

A Hub is a networking device that allows one to connect multiple PCs to a single network. Hubs may be based on Ethernet, Firewire, or USB connections. A switch is a control unit that turns the flow of electricity on or of in a circuit. It may also be used to route information patterns in streaming electronic data sent over networks. In the context of a network, a switch is a computer networking device that connects network segments.

Hub	Switch
Physical layer. Hubs are classified as Layer 1 devices per the OSI model.	Data Link Layer. Network switches operate at Layer 2 of the OSI model.
Hubs always perform frame flooding; may be unicast, multicast or broadcast	First broadcast; then unicast & multicast as needed.
4/12 ports	Switch is multi port Bridge. 24/48 ports
A network hub cannot learn or store MAC address.	A network switch stores MAC addresses in a lookup table.
Passive Device (Without Software)	Active Device (With Software) & Networking device
Half duplex	Full duplex
Hub has one Broadcast Domain.	Switch has one broadcast domain [unless VLAN implemented]
LAN	LAN
Electrical signal or bits	Frame (L2 Switch) Frame & Packet (L3 switch)
To connect a network of personal computers together, they can be joined through a central hub.	Allow to connect multiple device and port can be manage, Vlan can create security also can apply
Collisions occur commonly in setups using hubs.	No collisions occur in a full-duplex switch.