A.DSLB.FiberC.SatelliteD.CableWhich of the following te……

单项选择题Which of the following wireless security techniques is the MOST secure?（）

A. Enable Wired Equivalent Privacy
B. Disable SSID broadcast
C. Enable Wi-Fi Protected Access
D. Enable MAC filtering

单项选择题Which of the following can be hot-swappable?（）

A. Hard drive
B. Tape drive
C. Floppy drive
D. DVD-RW

单项选择题The user turns on the computer and hears a popping sound and detects a burning smell. Thesystem will not power on. Which of the following is the MOST likely problem?（）

A. Power supply has blown.
B. CPU fan is faulty.
C. Motherboard has overheated and shutdown.
D. UPS has been tripped.

单项选择题Hyperthreading technology:（）

A. only works on computer systems with multiple core CPUs.
B. enables a processor to work with two independent computer instructions at once.
C. enables two independent processors to work on the same task, simultaneously.
D. allows a computer program to work on multiple tasks simultaneously.

单项选择题Which of the following devices would MOST likely require a serial adapter to be installed on amodern PC?（）

A. External modem
B. TV tuner
C. Mouse
D. Keyboard