A network administrator needs to allow only one Telnet connection to a router． For anyone viewing the confguration and issuing the show run command, the password for Telnet access should be encrypted．Which set of commands will accomplish this task?
【正确答案】 C
【答案解析】首先密码加密的命令为service password-encyption 题目要求只能有一个人连接懂啊路由器．那么我们就开启一个vty线路．然后设置password并且配置login就OK了