A.ACM B.GRQ C.IAM D.IAI
A.2 B.4 C.8 D.16
A.會(huì)晤層、網(wǎng)絡(luò)層 B.網(wǎng)絡(luò)層、會(huì)晤層 C.表示層、會(huì)晤層 D.網(wǎng)絡(luò)層、數(shù)據(jù)鏈路層