单项选择题
An end user reports that their computer is not performing as fast as it used to and it shuts down unexpectedly. Which of the following is the MOST likely cause?（）
A. Network data cables are damaged.
B. Memory has become unseated.
C. The user has defragmented the hard drive.
D. Processor cooling fan is not functioning.
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相关考题
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单项选择题
After hardware upgrades have been installed, the technician boots the computer system. Nodisplay output is observed but a beeping is heard from the computer. Which of the following is the MOST likely issue?（）
A. Hard drive cables are not connected.
B. BIOS chips are not seated properly.
C. The power supply is not functioning.
D. Video card is not seated properly. -
单项选择题
A technician needs to upgrade the memory in a laptop. Which of the following memory typeswould be the correct type?（）
A.RIMM
B.DDR RAM
C.SDRAM
D.SODIMM -
单项选择题
A user explains that after the office was vacuumed the previous night their sound is not working and they cannot get onto the network. The user has verified that all of the PC’s cables are plugged into their respective ports. Which of the following is the MOST likely cause?（）
A. Frayed or broken cables
B. UPS is unplugged
C. NIC and sound card are disabled in Device Manager
D. Speakers are muted
