单项选择题

Which of the following connectors is MOST commonly used for UTP cable?（）

A.RJ-45
B.RJ-11
C.LC
D.SC

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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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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.

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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