Numerals
1BASE5

Obsolete 1Mbps version of Ethernet over twisted-pair cables, also called StarLAN.

4B/5B

An encoding used for 100BASE-X Ethernet, FDDI, CDDI, and some ATM physical layers.

5-4-3 rule

Restriction on a coax Ethernet that states that a frame can traverse at most five segments, go through at most four repeaters, and cross at most three segments that contain stations.

8B1Q4

An encoding used for 1000BASE-T Ethernet.

8B/6T

An encoding used for 100BASE-T4 Ethernet.

8B/10B

An encoding used for 1000BASE-CX, 1000BASE-FX, 1000BASE-TX, and fibre channel. Each byte is translated to a 10-bit pattern before it is transmitted.

10BASE2

10Mbps Ethernet over thin 50-ohm coaxial cable.

10BASE5

10Mbps Ethernet ...

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