A network hub is a dumb device that simply repeats any data which is sent to it. It makes no attempt to interpret the information passed and sends it to all the ports that it has simultaneously, which in turn generates lots of extra unnecessary network traffic.
A Switch on the other hand is intelligent and can decode packets of data sent to it and therefore can pass the information to the specific port that the device is attached to rather than sending to all connected devices. This optimizes network traffic.
A router is also an intelligent device like a switch but has the added ability to reroute packets over a network between differing sub-nets (IP address range classes).
They are almost the same except for one key difference. A switch transfers data only to the devices involved in the conversation. A hub on the other hand isn't dynamic enough for this, so it sends data to all devices connected instead of only the intended parties. Hubs are often refered to as "dumb switches".
A switch is more expensive ,a network built with switches is generally considered faster .
A network switch handles traffic better than a hub, which is a bit of a dumb device. Each is good for different situations.
what are the similarities between network switch and a hub
a hub is a central point in a network through which all the wires pass, a switch connects more than 2 LAN networks
Yes. The switch is acting as a "hub" between the various clients on the network.
You can use either a network hub or a network switch to set up your network
it is a switch in hubs
A crossover cable is used to connect a Hub or Switch to another Hub or Switch - or a PC to another PC.
Network hub can be shared with your home or office and also serve as a router too
A network hub absconds with any stateful packet inspection (SPI), so it won't act as a firewall.
Do you mean a network Hub? Then the answer is a network switch. Www.proskytv.com
Yes, switch as well as hub and router are network devices.
The difference is in the way how they process communications between two or more computers. If you send some information to one computer only using hub it will resend the information to all computers in the network. When switches resend information to the only one computer.
switches does not have the database...much smarter than a hub.