Test CCNA 21

21. A network interface port has collision detection and carrier sinsing enabled on a shared twisted pair network. From this statement. what is known about the net work 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.

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Correct C
Explaination:
CSMA/CD is the basic way that the traditional Ethenet operates. 10M interface is the way that an Ethernet operates at half duplex.