A.enable B.disable C.exit D.logout
A.在一個(gè)沖突時(shí)槽內(nèi)有多個(gè)站發(fā)送數(shù)據(jù) B.有的站沒(méi)有監(jiān)聽(tīng)而隨意發(fā)送數(shù)據(jù) C.有的站只發(fā)送很短的數(shù)據(jù)幀 D.由CSMA/CD協(xié)議缺陷而產(chǎn)生的沖突
A.非堅(jiān)持型監(jiān)聽(tīng) B.I-堅(jiān)持型監(jiān)聽(tīng) C.P-堅(jiān)持型監(jiān)聽(tīng) D.隨機(jī)訪問(wèn)型監(jiān)聽(tīng)