A.傳播時(shí)延B.傳輸時(shí)延C.處理時(shí)延D.排隊(duì)時(shí)延
A.語(yǔ)法B.指令C.語(yǔ)義D.時(shí)序
A.立即將退避計(jì)時(shí)器清零,接入信道B.等待DIFS之后,將退避計(jì)時(shí)器清零,接入信道C.立即繼續(xù)退避計(jì)時(shí)器的倒計(jì)時(shí)D.等待DIFS之后,繼續(xù)退避計(jì)時(shí)器的倒計(jì)時(shí)