多项选择题 Which three of the following basic network services are provided by the Cisco IOS?（）

单项选择题 Which of the commands below would you enter if you wanted to see the configuration register of your router?（）

单项选择题 You are the administrator of the Testking network and you have forgotten the password to one of your routers. After completing the password recovery procedure the router returned to its normal operation. The config-register was set back to the initial default value. What is this value?（）