A.核心層、匯聚層、接入層B.核心層、物理層、接入層C.匯聚層、接入層、會話層D.物理層、數(shù)據(jù)鏈路層、應(yīng)用層
A.網(wǎng)絡(luò)協(xié)議B.網(wǎng)絡(luò)規(guī)則C.TCP/IP協(xié)議D.FTP
A.IEEE802.1B.IEEE802.3C.IEEE802.11D.IEEE802.15