单项选择题
A. The laptop is too far away from the WAP.
B. The WAP is using 802.11a frequencies.
C. The laptop is only set to allow 802.11n connections.
D. The technician is on an 802.11b network.
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?（）
单项选择题 An administrator would like to know the name of the workstation that is being repaired. Which ofthe following commands, without parameters, will provide this information?（）