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- 单项选择题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
- C
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