A.AB.BC.CD.D
A.物理層-網(wǎng)絡(luò)層-數(shù)據(jù)鏈路層-傳輸層-應(yīng)用層B.物理層-網(wǎng)絡(luò)層-數(shù)據(jù)鏈路層-應(yīng)用層-傳輸層C.物理層-數(shù)據(jù)鏈路層-網(wǎng)絡(luò)層-傳輸層-應(yīng)用層
A.TCPB.UDPC.HDLCD.ARP