I have a very basic query on Collision Domain and Full Duplex Mode. There are two types of logical topology: Ethernet and Token Ring .
Whenever we read about Ethernet the first thing that we are taught is CSMA/CD. It says that in Ethernet two computers can not send data simultaneously. I am trying to figure out why it is not possible.
Scenario 1: Two computers connected directly to each other via ethernet cable. No switch or hub in between. Both the adapters are in full duplex mode. In this scenario if both the computers started pinging each other, will it not work? If not, then why not and if it works then why is there no CSMA/CD involved?
Scenario 2: Two computers connected to each other via a plain hub (not a switch). In this scenario can two computers ping each other simultaneously?
Does it matter on the type of cable: UTP or Coaxial?