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Local Area Network Access Methods

Token Ring

The second most popular type of LAN is the token ring. Almost 25% of all LANs worldwide are token ring LANS. Token Ring was originally developed by IBM, and have been since standardized by IEEE as IEEE 802.5. A token is a special control frame on token ring, token bus, and FDDI (Fiber Distributed Data Interface) networks that determines which stations can transmit data on a shared network. The node that has the token can transmit the data. Unlike contention-based networks, such as the Ethernet, workstations on token-based networks do not compete for access to the network. Only the station that obtains the token can transmit. Other stations wait for the token rather than trying to access the network on their own. On Ethernet networks, collisions occur when two or more workstations attempt to access the network at the same time. They must back off and try again later, which reduces performance, especially as the number of......

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Approximate Word Count: 2975
Approximate Pages: 12 (250 words per double-spaced page)

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