Which of the following wireless networking standards can operate at two different frequenciessimultaneously?（）

多项选择题Which of the following settings is MOST likely to be controlled through the use of a laptop’sFunction (Fn) key?（）

A. Wireless
B. Brightness
C. Sleep Mode
D. NumPad
E. Power

单项选择题Which of the following display types is likely to draw the LEAST amount of power?（）

A.LCD
B.LED
C.CRT
D.Plasma

单项选择题Which of the following technologies is responsible for communication with the CPU?（）

A. eSATA
B. PCI express
C. Southbridge
D. Northbridge

多项选择题Which of the following cable types can transmit at 100 Mbps and has the SAME transmissiondistance without the use of a repeater?（）

A.CAT6
B.RG-59
C.CAT5e
D.CAT3
E.RG-6

单项选择题A technician has installed a new motherboard in a workstation, but after hardware tests, themotherboard has failed. Which of the following should the technician do FIRST before replacingthe motherboard? （）

A. Reseat all power connections.
B. Remove the CMOS battery.
C. Install the graphics card.
D. Ground to the case.