A.幀(frame),數(shù)據(jù)包(packet),段(segment),比特流(bit) B.段(segment),數(shù)據(jù)包(packet),幀(frame),比特流(bit) C.比特流(bit),幀(frame),數(shù)據(jù)包(packet),段(segment) D.數(shù)據(jù)包(packet),段(segment),幀(frame),比特流(bit)
A.鏈路層和網(wǎng)絡(luò)層 B.網(wǎng)絡(luò)層和傳輸層 C.傳輸層和會(huì)話層 D.會(huì)話層和表示層
A.根據(jù)交換機(jī)端口 B.根據(jù)MAC地址 C.根據(jù)網(wǎng)絡(luò)層地址 D.根據(jù)IP組播