A.55% B.65% C.75% D.80%
A.MDM B.MCM C.MAM D.有線無線一體化
A.分區(qū)網(wǎng)絡(luò)拓撲 B.機架拓撲 C.數(shù)據(jù)中心拓撲 D.大用戶