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

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?（）

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