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I need a website to back up your answer please.

2007-02-26 02:56:09 · 4 answers · asked by bob_smith_6666 1 in Science & Mathematics Engineering

4 answers

Token-ring networks typically transmit data at either 4 or 16 Mbps.

The most common local area network alternative to Ethernet is a network technology developed by IBM, called token ring. Where Ethernet relies on the random gaps between transmissions to regulate access to the medium, token ring implements a strict, orderly access method. A token-ring network arranges nodes in a logical ring, as shown below. The nodes forward frames in one direction around the ring, removing a frame when it has circled the ring once.

The ring initializes by creating a token, which is a special type of frame that gives a station permission to transmit.
The token circles the ring like any frame until it encounters a station that wishes to transmit data.
This station then "captures" the token by replacing the token frame with a data-carrying frame, which encircles the network.
Once that data frame returns to the transmitting station, that station removes the data frame, creates a new token and forwards that token on to the next node in the ring.
Token-ring nodes do not look for a carrier signal or listen for collisions; the presence of the token frame provides assurance that the station can transmit a data frame without fear of another station interrupting. Because a station transmits only a single data frame before passing the token along, each station on the ring will get a turn to communicate in a deterministic and fair manner.

http://whatis.techtarget.com/definition/0,,sid9_gci214198,00.html
http://computer.howstuffworks.com/ethernet17.htm
http://computer.howstuffworks.com/ethernet17.htm
techshop.earthlink.net/p10611:S0035943

2007-02-26 03:10:30 · answer #1 · answered by Anonymous · 4 1

The data transfer rate for token ring technology was initially (in 1985) 4 Mbit/s,but in 1989 IBM introduced the first 16 Mbit/s token ring products and the 802.5 standard was extended to support this. In 1981, Apollo Computers introduced their proprietary 12 Mbit/s Apollo token ring (ATR) and Proteon introduced their 10 Mbit/s ProNet-10 token ring network in 1984.

what made IBM design their own Token ring technology ?

Apollo token ring ( ATR ) and ProNet-10 token ring network technology were found to be incompatable with IBM token ring technology. so, they were forced to invent a new token ring technology that is compatable with their network.

2007-02-26 12:32:15 · answer #2 · answered by kanchis 3 · 0 0

Try a search on token ring

2007-02-26 10:59:01 · answer #3 · answered by Gene 7 · 0 0

ck ibm site
nobody uses that garbage

2007-02-26 10:58:34 · answer #4 · answered by willow 3 · 0 0

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