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10.12 Network Facts
Speeds often measured in bps (bits per second) but we are more interested in the bytes per second. There is approximately an 11:1 ratio.
baseband - single frequency- only one station may transmit at any time (Ethernet, ARCnet, Token ring). These must be in discrete digital packets.
boradband - multiple frequencies allow multiple simultaneous data streams. This network can reach higher speeds by multiplexing and can have continuous and/or analog channels (ISDN, CATV,ATM)
Networks are some mix of clients and servers.
Token based networks rotate talk permissions between machines by passing a "token"
ARCnet - a token passing network that is relatively immune to noise
IBM token ring - a star topology token passing network
FDDI - fiber based token passing rings that rotate in opposite directions
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