Question : Differnce between IEEE802.5 and IEEE 802.3?

Hi,
I am Vinayak, doing my masters at University of Sydney.
I wanted to know the difference between Ethernet and Token Ring and the applications where each of them are most suited.


i mean a buisness case in which these are used

Answer : Differnce between IEEE802.5 and IEEE 802.3?

Ok with Ethernet, data is just sent to computers, there's no "Hey you there?" or "Is their data being sent?" it's just "Ok well here's some data, you'd better take it."  The problem with this, if two computer send data at the same time, you get collisions.  If you have a hub, after a collision occurs both computers pick a random time and send the data again until it goes through.  If you have a switch, the data has a path to each computer from each computer, so there are no collisions.

With token ring, you have a token, which is like a stick you'd pass around a camp fire, who ever has the stick can talk.  If the computer with the token has no data to send, it passes the token to the next comptuer in the network.  When it gets to a computer that has data to send, that computer alters one bit of the token which makes it the start of a data transmission.  No other tokens are on the network at this time, so no other computers can send data.  Which means there are no collisions to worry about.  When the receiving station gets the data, it stores it for later processing, then sends the token back through the network untill it finally reaches the sending station again, the bit is altered on the token and the token is sent through the network again.

That's basically it, if you want a more technical, and more in depth comparisson you should do a search on www.google.com .