A.數(shù)據(jù),數(shù)據(jù)段,數(shù)據(jù)包,數(shù)據(jù)幀,比特 B.比特,數(shù)據(jù)幀,數(shù)據(jù)包,數(shù)據(jù)段,數(shù)據(jù) C.數(shù)據(jù)包,數(shù)據(jù)段,數(shù)據(jù),比特,數(shù)據(jù)幀 D.數(shù)據(jù)段,數(shù)據(jù)包,數(shù)據(jù)幀,比特,數(shù)據(jù)
A.分層模型增加了復(fù)雜性 B.分層模型標(biāo)準(zhǔn)化了接口 C.分層模型使專業(yè)的開發(fā)成為可能 D.分層模型防止一個區(qū)域的網(wǎng)絡(luò)變化影響另一個區(qū)域的網(wǎng)絡(luò)