A.非堅(jiān)持CSMAB.1-堅(jiān)持CSMAC.P-堅(jiān)持CSMAD.堅(jiān)持CSMA
A.檢錯重發(fā)B.向后糾錯C.反饋校驗(yàn)D.檢錯丟棄
A.循環(huán)冗余碼B.奇偶校驗(yàn)碼C.漢明碼D.糾錯編碼