Exam 6: Computing Components

ROM is nonvolatile.

What component converts the AC power in a wall plug to the DC power required by a computer?

Which of the following is a case on a desktop that contains and protects the item shown in the accompanying figure and other electronic components?

If you are using a desktop or laptop, defragment the computer's hard disk should you notice a decline in the computer's performance.

Custom-built computers often do not include recovery media to restore the computer in the event it fails.

What is the unit of measurement for the clock speed for the channel shown in the accompanying figure?

The faster the clock speed, the more of these the processor can execute per second. What are they?

You want to add a new external hard disk to your computer, but you are unable to connect because you have run out of USB ports. Which of the following can you use instead?

Within the circuitry of a computer, each channel along which bits transfer allows the various devices both inside and attached to the system unit to communicate with each other. What are these channels, shown in the accompanying figure, called?

Which of the following determines the number of bits that the computer can transmit at one time?

Coding schemes map a set of ____________________ characters (letters and numbers) and special symbols to a sequence of numeric values that a computer can process.

The speed of the system clock has a significant effect on peripheral devices such as a printer or disk drive.

Registers are part of the memory.

____________________ memory does not lose its contents when power is removed from the computer.

The batteries in mobile computers and devices typically are rechargeable lithium-ion batteries.

On which of the following does battery life depend?

A(n) ____________________ is the basic storage unit in memory.

Explain what cache is used for, making sure to cover each of the types of cache.

Which of the following should you have if you plan to connect your computer or mobile device to a wired computer network?

Which of the following circuits contains many microscopic pathways capable of carrying electrical current?