exam 1 computer concepts quiz 2 chapter 2 and 3

If A is 11111110 and B is 00000010, evaluate the following expression using two's complement: -B

11111110

convert decimal 11 to octal

13

in base 16, the digit E corresponds to what decimal value?

14

if 891 is a number in base 13, how many 1s are there

1470

convert hexadecimal 10 to decimal

16

high color uses _____ bits

16

how many things can be represented with 4 bits

16

perform the following hexadecimal addition: 19AB6 + 43 =

19AF9

convert 777 to hexadecimal

1FF

the number zero and any number obtained by repeatedly adding one to it is a ____

natural number

the number zero and any number obtained by repeatedly adding one to it is a _____

natural number

-1/3 is a ____ number

negative

all integers and all quotients of two integers (division by zero excluded) belong to the category _____

negative number

which is a unit of an abstract mathematical system subject to the laws of arithmetic

number

what does pulse-code modulation (PCM) describe

the behavior of a digital signal, which jumps between two extremes

How would the following string of characters be represented using run-length encoding? AAAABBBCCCCCCCCDDDD hi there EEEEEEEEEFF

*A4BBB*C8*D4 hi there *E9FF

If A is 5 and B is -7, find the solution to the following operation: B-A

-12

if W is 17, and Y is -29, evaluate the expression: Y-W

-46

convert binary 0 to octal

0

convert the real number 0.10 to binary using 5 binary places

0.00011

covert the real number 0.50 to binary using 5 binary places

0.10000

Convert the real number 0.26 to octal using 5 octal places.

0.20000

convert decimal 1 to hexadecimal

1

convert decimal 4 to binary

100

convert hexadecimal 8 to binary

1000

convert decimal 69 to binary

1000101

covert octal 521 to hexadecimal

151

convert decimal 1066 to octal

2052

if 891 is a number in base 16, how many 1s are there?

2193

convert hexadecimal A9 to octal

251

convert decimal 1492 to octal

2724

covert decimal 43 to hexadecimal

2B

what is the minimum number of bits needed to represent 6 things

3

how many things can be represented with 5 bits?

32

the formula to compute the negative representation in a fixed-size number scheme is negative(I)=10^k-I, where k is the number of digits. If k in the formula for the ten's complement is 6, how much would be 35768 represented?

35768

if W is 17, and X is 28, evaluate the following expression: X + W

45

the formula to compute the negative representation in a fixed-size number scheme is negative(I)=10^k-I, where k is the number of digits. If k in the formula for the ten's complement is 6, how many positive integers can be represented?

499,999

covert decimal 321 to octal

501

convert 111 from base 8 to base 10

73

how many digits are there in the octal number system

8

how many things can be represented using three bits

8

convert binary 1001 to decimal

9

covert binary 1001 to decimal

9

perform the following hexadecimal subtraction: A9F8 - 1492

9566

the highest digit in base 16 is

F

the most popular audio format used today is the _____ format

MP3

which audio format is the most popular today

MP3

what does code *X5*A9 represent using run-length encoding

XXXXXAAAAAAAAA

_____ data is a continuous representation of information

analog

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

bandwidth

a group of eight bits is called a(n) ____

byte

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

character set

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

character set

the "c" in the acronym ASCII stands for ____

code

which of the following characters are not represented in the ASCII character set

cyrillic characters

which is the lowest base in which the number 987 could be a valid number

decimal

______ data is discrete representation of information

digital

the rules for converting base-10 numbers to other bases involve?

dividing the base into which you are converting the number

a byte is made up of six binary digits

false

bandwidth is the term that describes the size of wires connecting two computers in a network

false

binary numbers are important in computing because a binary number can be converted into every other base

false

binary numbers can be read off in hexadecimal but not in octal

false

converting from base 10 to other bases involved dividing by the base into which you are converting until the quotient is 1

false

four bits can be used to represent 32 unique things

false

grace murray hopper is credited with being the first programmer

false

in the ASCII character set, there is no distinction made between uppercase and lowercase letters

false

negative numbers cannot be presented using the fixed-sized number representation technique

false

run-length encoding replaces common words with shorter symbols

false

the JPEG image format is best used for line art, while GIF format is superior for photographic images

false

the digits used in base 8 are 1 through 8

false

the number of bits in a word is the same on all machines

false

the value of each position in a number system is determined by subtracting the base from the position number

false

thicker monitors produce more vibrant colors because they have a higher color depth

false

what is not a raster-graphic format

flash

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

floating point

huffman code are created based on the _____ of the character

frequency of use

the technique in which an application supports only a certain number of specific colors, creating a palette from which to choose, is called ______ color

indexed

natural numbers, negatives of a natural number, and zero belong to the category _____

integer numbers

what is the best format for photographic color images

jpeg

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

metadata

1066 is a ____ number

natural

1066 is a _____ number

natural

the rightmost digit of a number is the ____ position in any base

ones

if the number base is other than base ten, we call the decimal point the ______ point

radix

1.333333 is a ______ number

rational

2/5 is a _____ number

rational

6.2 is a ______ number

rational

recording the voltage level of an audio signal at regular intervals is

sampling

the representation for numbers you've used since grade school is called ______

signed-magnitude representation

A CD stores audio information in a binary format

true

Bitmap, GIF, and JPEG are all examples of raster-graphics formats

true

a digital signal represents one of two values at any point in time

true

a value of a number in any base can be expressed as a polynomial expression

true

an RGB value is made up of three values that represent relative contributions of the primary colors, red, green, and blue

true

an RGB value represents a color using three numeric values

true

an audio single is digitized by sampling it at regular intervals

true

every additional bit used doubles the number of things that can be represented by a binary string

true

huffman encoding uses variable length binary strings to represent particular characters

true

in a signed-magnitude representation of numbers, there are two representations of 0

true

information is data that has been organized and/or processed in a useful way

true

keyword encoding is a type of text compression Convert the real number 0.26 to octal using 5 octal places.

true

keyword encoding replaces frequently used words with a single character

true

lossless compression means that data can be retrieved without losing any of the original information

true

positional notation is possible due to the concept of zero

true

representing a number in base 5 sometimes requires more digits than representing that same number in base 10

true

starting from the right, every group of four binary digits can be read as one hexadecimal digit

true

the base of a number system determines the number of digits used in the system

true

the base of the binary number system is 2

true

the digits used in base 8 are 0 through 7

true

the term "radix point" is used instead of decimal point in bases other than 10

true

two hexadecimal digits can be stored in one byte

true

vector graphics represent images in terms of lines and geometric shapes

true

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

unnecessary complexity

which unit of binary storage has a size that is processor-dependent

word