单项选择题
A. The firewall was not powered back on
B. The DHCP server is not working correctly
C. The cellular repeater installed is interfering with the network speed
D. The new switches are configured for 10MB
多项选择题 For added security, a network administrator has decided to lock down the wireless network. Which of the following are ways to accomplish this? （）(Select TWO).
单项选择题 Which of the following IP addresses would MOST likely be the default gateway for 10.1.16.184?（）
单项选择题 Which of the following commands would be used to go from c:\windows to c:\windows\system32?（）