单项选择题
A.站点到站点VPN B.DMVPN C.远程访问VPN D.AC VPN
A.专用ISP B.GRE IP隧道 C.租用线路 D.一个VPN网关
A.当网络管理员因易于配置而更喜欢它 B.使用多链路PPP C.当需要明文密码在远程主机上模拟登录 D.当路由器资源有限
A.Serial0/0/0 is administratively down,line protocol is down B.Serial0/0/0 is down,line protocol is down C.Serial0/0/0 is up,line protocol is up D.Serial0/0/0 is up,line protocol is down
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