Chapter 4 Questions

True/False

Indicate whether the sentence or statement is true or false.

1. The case of the system unit is made of metal or plastic and protects the internal electronic components from damage.

2. The electronic components and circuitry of the system unit, such as the processor and memory, usually are part of or are connected to a circuit board called the fatherboard.

3. The control unit interprets each instruction issued by a program and then initiates the appropriate action to carry out the instruction.

4. Few of today's personal computers support pipelining.

5. Registers are part of memory or a storage device, not part of the processor.

6. The system clock is one of the factors that influences a computer's speed.

7. Human speech is analog because it uses continuous (wave form) signals that vary in strength and quality.

8. Most computers are digital and recognize only two discrete states: on and off.

9. Memory usually consists of one or more chips on the motherboard or some other circuit board in the computer.

10. When the computer’s power is turned off, volatile memory does not lose its contents.

11. The processor interprets and executes a program’s instructions while the program is in RAM.

12. Because RAM is nonvolatile, it keeps its contents when the power is removed from the computer.

13. ROM is volatile.

Multiple Choice

Identify the letter of the choice that best completes the statement or answers the question.

14. On _____, the electronic components and most storage devices are part of the system unit and other devices, such as the keyboard, mouse, and monitor, normally occupy space outside the system unit.

a.	desktop personal computers	c.	mobile devices
b.	notebook computers	d.	all of the above

15. Some computer and chip manufacturers use the term _____ to refer to a personal computer processor chip.

a.	microprocessor	c.	coprocessor
b.	parallel processor	d.	perpendicular processor

16. Each tick of the system clock equates to a _____.

a.	clock shot	c.	clock rhythm
b.	clock spring	d.	clock cycle

17. Most high-performance PCs use some type of _____ processor(s).

a.	Pentium	c.	Xeon and Itanium
b.	Celeron	d.	Acceleron and Celerium

18. Parallel processing _____.

a.	speeds processing time	c.	requires special software
b.	divides a problem into portions	d.	all of the above

19. _____ is the most widely used coding scheme used to represent data.

a.	American Standard Code for Information Interchange (ASCII)
b.	Unicode
c.	Extended Binary Coded Decimal Interchange Code (EBCDIC)
d.	Multicode

20. Memory stores _____.

a.	the operating system and other system software
b.	application programs that carry out a specific task
c.	the data being processed and the resulting information
d.	all of the above

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

a.	byte	c.	kilobyte
b.	address	d.	RAM

22. _____ is the most common type of volatile memory.

a.	ROM	c.	CMOS
b.	Flash memory	d.	RAM

23. _____ is built directly into a processor chip and usually has a very small capacity.

a.	L1 cache	c.	L3 cache
b.	L2 cache	d.	L4 cache

24. The wider the bus, the _____ the transfer of data.

a.	greater the number of transfer steps required and the slower
b.	greater the number of transfer steps required and the faster
c.	fewer the number of transfer steps required and the slower
d.	fewer the number of transfer steps required and the faster

25. The first step in cleaning a computer is _____.

a.	turn it off, unplug it, and unplug all cables from the ports
b.	vacuum the fan on the back of the computer case
c.	wipe the case with an antistatic wipe
d.	open the case