A.星型網(wǎng)絡 B.總線型網(wǎng)絡 C.環(huán)形網(wǎng)絡 D.樹型網(wǎng)絡
A.LAN B.MAN C.WAN D.WWW
A.監(jiān)聽 B.聯(lián)接 C.斷開 D.創(chuàng)建套接字