
288 Networking Explained, Second Edition
is that ALOHA permitted any node to transmit data at any time, made no provision to
allow a node to detect if another node was sending data, and there was no procedure for
dealing with what would come to be known as collisions. Collisions occur when two or
more nodes attempt to transmit data simultaneously. Without a mechanism for dealing
with the eventuality of simultaneous transmissions, ALOHA required many retransmis-
sions. Ethernet, on the other hand, was designed with both carrier sense capability
(CSMA) and collision detection (CD) (see Chapter 5).
2. How did Ethernet get its name?
The name Ethernet was ...