Ethernet is known as being a very reliable
local area networking protocol. In this example, A is transmitting
information and B also has information to transmit. Let’s
say that A & B listen to the network, hear no traffic
and broadcast at the same time. A collision occurs when these
two packets crash into one another on the network. Both transmissions
are corrupted and unusable.
When a collision occurs on the network, the
NIC card sensing the collision, in this case, station C sends
out a jam signal that jams the entire network for a designated
amount of time.
Once the jam signal has been received and
recognized by all of the stations on the network, stations
A and D will both back off for different amounts of time before
they try to retransmit. This type of technology is known as
Carrier Sense Multiple Access With Collision Detection –