Foreachblank，choosethebestanswerfromthefourchoicesandwritedownontheanswersheet. (请作答此空)isasixbytesOSIlayer2addresswhichisburnedintoeverynetworkingdevicethatprovidesitsuniqueidentityforpointtopointcommunication. (72)isaprofessionalorganizationofindividualsinmultipleprofessionswhichfocusesoneffortonlower-layerprotocols. (73)functionswithtwolayersofprotocols.ItCanconnectnetworksofdifferentspeedsandcanbeadaptedtoanenvironmentasitexpands. (74)isthepopularLANdevelopedunderthedirectionoftheIEEE802.5. (74)isthepopularbackbonetechnologyfortransmittinginformationathighspeedwithahighleveloffaulttolerancewhichisdevelopedunderthedirectionofANSI.
A.The MAC address B.The IP address C.The subnet address D.The virtual address正确答案A
