A.衛(wèi)星網(wǎng) B.電話網(wǎng) C.有線網(wǎng) D.無線網(wǎng)
A.粗纜以太網(wǎng) B.細纜以太網(wǎng) C.雙絞線以太網(wǎng) D.光纖以太網(wǎng)
A.用戶界面 B.管理員界面 C.系統(tǒng)界面 D.系統(tǒng)調(diào)用