Which of the following expansion devices would allow a user to utilize multiple hardware profiles to control an external display and power option?（）

单项选择题Which of the following adapter cards allows I O devices to be connected and transmits data using a POTS line?（）

A. PCI tuner card
B. PCI modem
C. PCI SCSI
D. PCI Ethernet

单项选择题Which of the following operating system types will allow a user to utilize 16GB of RAM if installed on a PC workstation?（）

A.8-bit
B.16-bit
C.32-bit
D.64-bit

单项选择题Which of the following processing types allows two instructions to be received and processednanoseconds apart?（）

A. Quad core
B. Triple core
C. Dual core
D. Hyper-threading

单项选择题The technician is repairing a PC which appears to have a failing RAM module. After replacing the module, the extra memory still is not registering. Which of the following is MOST likely the issue?（）

A. Jumper settings are incorrect
B. The RAM module is defective
C. The memory slot is defective
D. CMOS needs to be flashed

单项选择题Which of the following technologies is the MOST secure form of wireless encryption?（）

A.SSL
B.WPA
C.WEP
D.TLS