range 0 to 255? 错误！ 错误！未找 到引用源。 到引用源。 (a) 32 错误！ 错误！未找 到引用源。 到引用源。 (b) 8 错误！ 错误！未找 到引用源。 到引用源。 (c) 4 错误！ 错误！未找 到引用源。 到引用源。 (d) 16
Correct answer is (b)
5.
Of the following, which best describes the difference between bits and bytes? 错误！未找到引用源。 错误！未找到引用源。(a) A bit is the smallest unit of information in a computer. A byte is a collection of bits. 错误！未找到引用源。 错误！未找到引用源。(b) A byte represents the values 0 and 1, while a bit represents a range of values from 0 to 255. 错误！未找到引用源。(c) There is no difference between bits and bytes. The terms are used 错误！ 找到引用源。 interchangeably. 错误！未找到引用源。 错误！未找到引用源。(d) A byte is the smallest unit of information in a computer. A bit is a collection of bytes.
Correct answer is (a)
1.
Which of the following can be an advantage of buying a computer that contains a widely-used CPU or its equivalent clone?
I. II. III.
A lot of established computer suppliers provide products using that type of CPU. The cost of the CPU is likely to be lower because of the large quantities of the CPU that have been sold. There will be more operating systems that work with that type of CPU.
错误！ 错误！未找到引用源。 未找到引用源。(a) I and III only 错误！ 错误！未找到引用源。 未找到引用源。(b) I and II only 错误！未找到引用源。 错误！未找到引用源。(c) II and III only 错误！ 错误！未找到引用源。 未找到引用源。(d) I, II, and III Correct answer is (d)
2.
Which of the following manufacturers provides the Pentium family of processors for desktop computers? 错误！ 未找到引 错误！ 用源。 用源。(a) Cyrix 错误！ 未找到引 错误！ 用源。 (b) 用源。 AMD 错误！ 未找到引 错误！ 用源。 用源。(c) IBM 错误！ 未找到引 错误！ 用源。 (d) 用源。 Intel
Correct answer is (d)
3.
Steps performed by the CPU during the fetch-execute cycle include which of the following? I. II. Interpret Store
错误！ 错误！未找到引用 源。(a) I only 错误！ 错误！未找到引用 源。(b) II only 错误！ 错误！未找到引用 源。(c) I and II 错误！ 错误！未找到引用
源。(d) None Correct answer is (c)
4.
Which of the following is (are) true of modern microprocessors? I. II. Microprocessor chips are typically the size of a deck of cards. Microprocessors typically contain millions of transistors.
错误！ 错误！未找到引用 源。(a) I only 错误！ 错误！未找到引用 源。(b) II only 错误！ 错误！未找到引用 源。(c) None 错误！ 错误！未找到引用 源。(d) I and II Correct answer is (b)
5.
Which of the following components is (are) typically found on the motherbo
ard of a computer? I. II. III. Expansion slots The microprocessor The CMOS memory chip
错误！ 错误！ 未找到引用源。 未找到引用源。 (a) I, II, and III 错误！ 未找到引用源。 (b) 错误！ 未找到引用源。 I and III only 错误！ 未找到引用源。 (c) 错误！ 未找到引用源。 II only 错误！ 未找到引用源。 (d) 错误！ 未找到引用源。 I and II only Correct answer is (a)
6.
In order to retain data for future reference, volatile storage requires 错误！未找到引用源。 错误！未找到引用源。(a) the use of magnetism 错误！未找到引用源。 错误！未找到引用源。(b) media that can be removed from the computer 错误！未找到引用源。(c) a constant source of electrical 错误！未找到引用源。 power 错误！未找到引用源。 错误！未找到引用源。(d) the use of optical media
Correct answer is (c)
7.
Components of the CPU typically include which of the following? I. II. III. The control unit The Level 1 cache memory The Arithmetic/Logic Unit
错误！未找到引用源。(a) 错误！未找到引用源。 I and II only 错误！未找到引用源。 错误！未找到引用源。(b) II and III only 错误！未找到引用源。 错误！未找到引用源。(c) I, II, and III 错误！未找到引用源。 错误！未找到引用源。(d) I and III only Correct answer is (c)
8.
An Arithmetic/Logic Unit typically performs which of the following operations? I. II. Retrieval of instructions from RAM Performance of greater-than and less-than comparisons
错误！ 错误！未找到引用 源。(a) II only 错误！ 错误！未找到引用 源。(b) I and II 错误！ 错误！未找到引用 源。(c) None 错误！ 错误！未找到引用 源。(d) I only Correct answer is (a)
9.
Which of the following kinds of projects typically requires a special type of CPU that would not be found in a desktop or mainframe computer? 错误！未找到引用源。 错误！未找到引用源。(a) Monitoring the operation of an automobile engine 错误！未找到引用源。 错误！未找到引用源。(b) Performing business calculations for a financial report 错误！未找到引用源。 错误！未找到引用源。(c) Processing requests to send and receive email 错误！未找到引用源。 错误！未找到引用源。(d) Looking up and storing information on
customer accounts Correct answer is (a)
10.
When a computer is turned on, the central processing unit performs instructions specified by the _____ that searches the disk drive for the main operating system files.
错误！未找到引用源。 错误！未找到引用源。(a) RAM BIOS 错误！未找到引用源。 错误！未找到引用源。(b) virtual memory 错误！未找到引用源。 错误！未找到引用源。(c) CMOS 错误！未找到引用源。 错误！未找到引用源。(d) ROM BIOS Correct answer is (d)
11.
CPU performance is influenced by
which of the following? I. II. III. Word size Clock rate Instruction set size
错误！ 未找到引用源。 (a) 错误！ 未找到引用源。 I, II, and III 错误！ 未找到引用源。 (b) 错误！ 未找到引用源。 II only 错误！ 未找到引用源。 (c) 错误！ 未找到引用源。 I and II only 错误！ 未找到引用源。 (d) 错误！ 未找到引用源。 I and III only Correct answer is (a)
12.
Which of the following is the primary function of a CPU?
错误！未找到引用源。 错误！未找到引用源。(a) To execute only the operating system's instructions 错误！未找到引用源。 错误！未找到引用源。(b) To determine if a program functions correctly before using it 错误！未找到引用源。 错误！未找到引用源。(c) To execute only the instructions within a user specified application 错误！未找到引用源。 错误！未找到引用源。(d) To execute any program's instructions stored in RAM Correct answer is (d)
13.
A computer clock with a speed of 100 MHz cycles how many times per second?
错误！ 未找到引用源。 (a) 错误！ 未找到引用源。 100,000,000 错误！未找到引用源。 错误！未找到引用源。 引用源 (b) 100,000 错误！ 错误！ 未找到引用源。 未找到引用源。 (c) 1,000 错误！未找到引用源。 错误！未找到引用源。 (d) 100 Correct answer is (a)
14.
The budget processor produced by Intel is called the
错误！ 错误！未找到引用 源。(a) Celeron 错误！ 错误！未找到引用 源。(b) Athlon 错误！ 错误！未找到引用 源。(c) Pentium 错误！ 错误！未找到引用 源。(d) K6 Correct answer is (a)
15.
Where is a computer's CPU located?
错误！未找到引用源。 错误！未找到引用源。(a) On a floppy disk drive 错误！未找到引用源。 错误！未找到引用源。(b) On the motherboard 错误！未找到引用源。 错误！未找到引用源。(c) On a hard disk drive 错误！未找到引用源。 错误！未找到引用源。(d) On an expansion card Correct answer is (b)
16.
Which of the following memory types holds data but requires very little power to retain its contents?
错误！未找到引用源。 错误！未找到引用源。(a) CMOS 错误！未找到引用源。 错误！未找到引用源。(b) RAM 错误！未找到引用源。 错误！未找到引用源。(c) Virtual memory
错误！未找到引用源。 错误！未找到引用源。(d) RDRAM Correct answer is (a)
17.
What is an area in the computer system unit that temporarily holds data before and after it is processed until the computer is turned off?
错误！未找到引用源。 错误！未找到引用源。(a) CMOS 错误！未找到引用源。 错误！未找到引用源。(b) RAM 错误！未找到引用源。 错误！未找到引用源。(c) ROM 错误！未找到引用源。 错误！未找到引用源。(d) Hard disk drive Correct answer is (b)
18.
The microprocessor in a multi-purpose computer is also known as the
错误！ 错误！未找到 引用源。 引用源。(a) CPU 错误！ 错误！未找到 引用源。(b) 引用源。 RAM 错误！ 错误！未找到 引用源。 引用源。(c) PCI 错误！ 错误！未找到 引用源。 引用源。(d) VGA Correct answer is (a)
1.
Which of the following kinds of projects typically requires a special type of CPU that would not be found in a desktop or mainframe computer? 错误！未找到引用源。 错误！未找到引用源。(a) Processing requests to send and receive email 错误！未找到引用源。(b) Monitoring the operation of an automobile 错误！未找到引用源。 engine 错误！未找到引用源。 错误！未找到引用源。(c) Looking up and storing information on customer accounts 错误！未找到引用源。 错误！未找到引用源。(d) Performing business calculations for a financial report
Correct answer is (b)
2.
When a computer is turned on, the central processing unit performs instructions specified by the _____ that searches the disk drive for the main operating system files. 错误！未找到引用源。 错误！未找到引用源。(a) virtual memory 错误！未找到引用源。 错误！未找到引用源。(b) CMOS 错误！未找到引用源。 错误！未找到引用源。(c) RAM BIOS 错误！未找到引用源。 错误！未找到引用源。(d) ROM BIOS
Correct answer is (d)
3.
Which of the following is the primary function of a CPU? 错误！未找到引用源。 错误！未找到引用源。(a) To execute only the operating system's instructions 错误！未找到引用源。 错误！未找到引用源。(b) To execute any program's instructions stored in RAM 错误！未找到引用源。 错误！未找到引用源。(c) To execute only the instructions within a user specified application 错误！未找到引用源。(d) To determine if a program functions correctly before 错误！未找到引用源。 using it
Correct answer is (b)
4.
Where is a computer's CPU located? 错误！未找到引用源。 错误！未找到引用源。(a) On a hard disk drive 错误！未找到引用源。 错误！未找到引用源。(b) On a floppy disk drive 错误！未找到引用源。 错误！未找到引用源。(c) On the motherboard 错误！未找到引用源。 错误！未找到引用源。(d) On an expansion card
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