A collision domain obeys the 5-4-3 rule: Every path contains at most five segments, four repeaters, and three populated segments.
For coaxial cable LANs
The original baseband Ethernet LAN defined in the 1980s was built from sections of thick, heavy 50-ohm coaxial cable.
Only one signal can be on a cable at any given time.
Stations attach to the medium via attachment unit interface (AUI) cables and transceivers.
Transceivers send and receive, send jams, control jabber, and detect collisions.
SQE signals are used to report the completion of a frame transmission, a collision, or improper pulses on the cable.
Thin (10BASE2) coax is cheaper and easier to work with than thick coax.
A thin coax segment has a daisy chain structure.
Systems connect ...