單項選擇題

Whichstatementistrueaboutfull-duplexEthernetincomparisontohalf-duplexEthernet？（）

A.Full-duplexEthernetconsistsofasharedcablesegment.Half-duplexEthernetprovidesapoint-to-pointlink.B.Full-duplexEthernetusesaloopbackcircuittodetectcollisions.Half-duplexEthernetusesajamsignal.C.Full-duplexEthernetcanprovidehigherthroughputthancanhalf-duplexEthernetofthesamebandwidth.D.Full-duplexEthernetusestwowirestosendandreceive.Half-duplexEthernetusesonewiretosendandreceive.
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