A.Enable B.Conft C.Int f0/0 D.Int vlan 1
A.Enable B.Ping C.Show running-config D.Link
A.發(fā)送前偵聽 B.碰撞檢測(cè) C.產(chǎn)生碰撞,等待一段時(shí)間,重新發(fā)送 D.信道空閑,則立即進(jìn)行發(fā)送