A.interface is down,line protocol is down B.interface is down,line protocol is up C.interface is up,line protocol is down D.interface is up,line protocol is up
A.增加了沖突域的數(shù)量 B.降低了廣播域的數(shù)量 C.連接了網段1和網段2的廣播 D.隔斷了網段1和網段2之間的廣播
A.PC的網卡壞了 B.路由器的IP地址在其它子網內 C.路由器的VTY端口沒設密碼 D.PC的網關沒設