A、數(shù)據(jù)幀 B、數(shù)據(jù)比特 C、數(shù)據(jù)報(bào) D、數(shù)據(jù)段
A.TCH B.SCCH C.PDCH D.PGCH
A.應(yīng)用層B.傳輸層C.網(wǎng)絡(luò)層D.網(wǎng)絡(luò)接口層