A.延遲一個(gè)固定的時(shí)間單位再偵聽(tīng) B.繼續(xù)偵聽(tīng) C.延遲一個(gè)隨機(jī)的時(shí)間單位再偵聽(tīng) D.放棄偵聽(tīng)
A.DNS B.ARP C.RARP D.ICMP
A.254B.128C.64D.62