A.物理層 B.鏈路層 C.網(wǎng)絡(luò)層 D.應(yīng)用層
A.10BsesT B.100BsesT2 C.100BsesT4 D.100BsesTX
A.10BASE2 B.10BASET C.100BASEFL D.1000BASESX