final

Question 1

Which of the following terms best describes circuit boards, keyboards, and disk
drives?

Answer 1

computer hardware

Question 2

Which of the following is an application package?

Answer 2

word proccesor

Question 3

What is the name of a solid piece of silicon that contains transistors, other
components, and their connections?

Answer 3

integrated circuts

Question 4

Which of the following is a technique for isolating program pieces by eliminating the
ability for one piece to access information in another?

Answer 4

information hiding

Question 5

An abstraction is a mental model that removes or hides complex details

Answer 5

true

Question 6

Ada Augusta, Countess of Lovelace, is credited with being the first programmer.

Answer 6

true

Question 7

Computer software is a collection of programs that provides the instructions that a
computer carries out.

Answer 7

true

Question 8

An algorithm allows us to develop and express solutions to problems.

Answer 8

true

Question 9

Which of the following is the number 0 or any number obtained by repeatedly adding
1 to it?

Answer 9

Natural number

Question 10

What is the largest digit in the decimal number system?

Answer 10

9

Question 11

How many digits are there in the binary number system?

Answer 11

2

Question 12

How many digits are there in the hexadecimal number system?

Answer 12

16

Question 13

What is the decimal value of the largest digit in the hexadecimal number system?

Answer 13

15

Question 14

1Which number represents the value of the base in every number system?

Answer 14

10

Question 15

true or False? The category of numbers called integers includes negative numbers.

Answer 15

true

Question 16

True or False? There is one set of underlying principles governing all numbers
systems.

Answer 16

true

Question 17

True or False? A rational number is any number that can be expressed without a
fractional part.

Answer 17

False a rational number is

Question 18

True or False? The base of a number system determines the number of digit
positions that can be used for any number in the system.

Answer 18

false

Question 19

True or False? A value of a number in any base can be expressed as a polynomial
expression

Answer 19

True

Question 20

True or False? Three octal digits can be stored in one byte

Answer 20

false so how many byte?

Question 21

A group of eight bits is called a(n)

Answer 21

byte

Question 22

True or False? The computer’s operating system and language translators are
generally known as systems software

Answer 22

true

Question 23

true or False? There is one set of underlying principles governing all numbers
systems.

Answer 23

true

Question 24

True of False? The value of a number in any base can be expressed as a polynomial
in which each term is made up of a digit multiplied by the base raised to a power.

Answer 24

True

Question 25

What is the value of the largest digit in the base X number system (for any positive integer X)?

Answer 25

X-1

Question 26

How many things can be represented using two bits?

Answer 26

4

Question 27

What is the minimum number of bits needed to represent 6 things?

Answer 27

3

Question 28

How many things can be represented using three bits?

Answer 28

8

Question 29

True or False? Every additional bit used doubles the number of things that can be represented by a binary string

Answer 29

true

Question 30

True or False? Information is data that has been organized and/or processed in a useful way.

Answer 30

true

Question 31

True or False? Electronic signals are easier to manage if they transfer only binary data

Answer 31

true

Question 32

Which technique for representing numeric data uses the mantissa to hold the significant digits of a value?

Answer 32

Floating point

Question 33

True or False? The term radix point is used instead of decimal point in bases other than 10.

Answer 33

true

Question 34

When representing numbers using _______________, there are two representations for zero.

Answer 34

signed magnitude.

Question 35

Which problem is caused most directly by the existence of two representations of zero within a computer?

Answer 35

unnecessary complexity

Question 36

Which of the following is a list of characters and the codes used to represent each one?

Answer 36

Character set

Question 37

true or False? A character set is a list of characters and their numeric codes.

Answer 37

true

Question 38

The acronym ASCII stands for __________

Answer 38

American standard code for information interchange

Question 39

Networks have _______________ restrictions that limit the number of bytes that can be transmitted from one place to another in a fixed amount of time.

Answer 39

Bandwidth

Question 40

Data _______________ is the process of reducing the amount of space needed to store a piece of data.

Answer 40

compression

Question 41

True or False? Run-length encoding replaces common words with shorter symbols

Answer 41

false

Question 42

n which text compression technique is it invalid for a bit string that represents a character to be the prefix of any other string used to represent a character?

Answer 42

huffman encoding

Question 43

True or False? Keyword encoding is a type of text compression

Answer 43

true

Question 44

_____________ uses a variable-length binary string to represent a character so that frequently used characters have short codes

Answer 44

huffman encoding

Question 45

Recording the voltage level of an audio signal at regular intervals is called what

Answer 45

sampling

Question 46

True or False? Audio data is often represented on a computer by sampling the continuous signal that represents a sound wave

Answer 46

true

Question 47

True or False? The JPEG image format is best used for line art, while the GIF format is superior for photographic images

Answer 47

false

Question 48

Which of the following is data about data, such as the resolution of an image being stored with the image

Answer 48

meta data