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

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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
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