单项选择题 A technician is working on a SOHO wireless network and notices that the wireless adaptor in the laptop shows excellent connection at 11Mbps. The technician has a wireless N adaptor. Which of the following would BEST describe this connection speed?（）

单项选择题 Which of the following routing protocols involves all routers knowing the connections status ofother routers within the network?（）

单项选择题 Which of the following troubleshooting steps should be performed NEXT after a core router hasbeen reported down?（）