多项选择题 Part of the configuration files for routers testking1 and testking2 are displayed below: If you were to enter the "show interface serial 0" command on router testking1,which of the following will be displayed?（）

单项选择题 Youre working at TestKing as a network administrator when your MCSE assistant calls you for help. He has attempted to configure Router TK1 and incorrectly configured the router interface with a subnet broadcast address. You have to correct this by first removing the incorrect IP address and then re-entering the first usable IP address of the same subnet. How will you do this?（）

单项选择题 While logged into a router, you wish to see the RIP routing updates in real time as they are sent and received. Which command would you issue to see these updates?（）