多项选择题 A technician is cleaning spyware from a Windows XP machine. Because of the infections, the unitcannot browse the Internet to obtain anti-virus updates.Which of the following is the BEST course ofaction? （）(Select TWO).

单项选择题 A technician notices that the BIOS event log shows a chassis intrusion. Which of the following is theMOST likely reason for the event? （）

单项选择题 A technician has just installed an upgraded graphics card. The computers power turns off before itfinishes booting. Which of the following is the cause of the problem? （）