多项选择题
A. 1x B. 3x C. 6x D. 16x E. 24x
A user states that they are trying to project their lap...
单项选择题A user states that they are trying to project their laptop to a screen for a presentation. They have plugged the projector cable into their laptop, and turned the projector on, but no signal is found. Which of the following should the technician perform FIRST?（）
A. Ensure the projector is receiving power B. Verify the laptop is not running on battery C. Toggle the function key for displays D. Replace the projector cable with another
A user states that whenever they try to launch a certai...
单项选择题A user states that whenever they try to launch a certain installed application, they hear unusual whirring/clicking sounds from their machine and the application never loads. Which of the following components would a technician MOST likely need to replace?（）
A. Hard Disk Drive B. Optical Drive C. Power Supply Unit D. Case Fan
Which of the following security threats are MOST likely...
单项选择题Which of the following security threats are MOST likely prevented through user training?（）
A. Network Intrusion B. Adware Popups C. Social Engineering D. Spam Messages
