Cisco 200-125 Exam

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.
Answer: Option C. 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).

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