A.以太網(wǎng) B.令牌網(wǎng) C.TCP/IP D.ATM
A.2 B.3 C.4 D.5
A.應(yīng)用層 B.網(wǎng)絡(luò)層 C.物理層 D.數(shù)據(jù)鏈路層