A network interface port has collision detection and carrier sensing enabled on a shared twisted
pair network. From this statement, what is known about the network interface port?
A.
This is a 10 Mb/s switch port.
B.
This is a 100 Mb/s switch port.
C.
This is an Ethernet port operating at half duplex.
D.
This is an Ethernet port operating at full duplex.
E.
This is a port on a network interface card in a PC.
Explanation:
Modern Ethernet networks built with switches and full-duplex connections no longer utilize
CSMA/CD. CSMA/CD is only used in obsolete shared media Ethernet (which uses repeater or
hub).
F. This PC / and what ever it is plugged into: are antiques and should be “office-spaced” in the parking lot. Sell these people some real switches and replace the PC.
this question is circa 1980.
C
There is colision only on half duplex.