A.傳輸層B.應用層C.物理層D.數(shù)據(jù)鏈路層
A.B類地址.其網(wǎng)絡號是202.177.0.0 B.B類地址.其網(wǎng)絡號是202.177.62.0 C.C類地址.其網(wǎng)絡號是202.177.0.0 D.C類地址.其網(wǎng)絡號是202.177.62.0
A.應用層和傳輸層 B.傳輸層和網(wǎng)絡層 C.網(wǎng)絡層和數(shù)據(jù)鏈路層 D.數(shù)據(jù)鏈路層和物理層