多项选择题
A. Set the clear password jumper on the motherboard
B. Enter the BIOS setup and select the clear password setting
C. Remove the power cord from the power supply and then plug it back in
D. Power cycle the PC
E. Remove the CMOS battery for 15 minutes
单项选择题 Which of the following network modifications should be implemented to extend the wirelessnetwork range and allow out-of-range users to share the Internet connection?（）
多项选择题 Which of the following are encrypted protocols? （）(Select TWO).
单项选择题 A technician needs to ping a client’s machine that the technician is working on, to ensure that thenetwork card is functioning correctly. Which of the following IP addresses should be used?（）