Collisions
To prevent collisions.
Wired Ethernet can physically detect collisions, WIFI can't.
by comparinig the xmit line to the recieve line and look for differences
Head-on collisions are usually the most fatal ones.
10-Mbps Ethernet, 100-Mbps or Fast Ethernet, and 1000-Mbps or Gigabit Ethernet.
Continental- continental collisions, Continental-oceanic collisions,and Oceanic-oceanic collisions
Type
type
type
type
B. Excessive late collisions