TM 207 Test Bank Questions and Answers
Update | 100% Correct
Data and computers - ANSWER>>are multimedia devices, dealing with a vast
array of info categories
store, present, and help us modify
- Numbers
Texts
Video/audio
All stored as binary digits (Bits)
Data compression - ANSWER>>Reduction in the amount of space needed to store
a piece of data or the bandwidth to transmit it
Compression ratio - ANSWER>>Size of compressed data divided by size of original
data
lossless - ANSWER>>data can be retrieved without any loss of the original
information
Lossy Compression - ANSWER>>some information is lost permanently in the
process
analog data - ANSWER>>A continuous representation of data, analogues to actual
info it represents
digital data - ANSWER>>A discrete representation, breaking the information up
into separate elements
, Binary representation of data - ANSWER>>a type of data that is represented or
displayed in the binary numeral system; the only category of data that can be
directly understood and executed by a computer; numerically represented by a
combination of zeros and ones
Signed-magnitude number representation - ANSWER>>The sign represents the
ordering, and the digits represent the magnitude of the number
Let 0 through 49 represent 0 - 49
Let 50 through 99 represent -50 through -1
Tens complement representation - ANSWER>>formula to compute the
representation of a negative number
Negative(I)= 10k - I, where K is the number of digits
Ex. -3 is negative(3), so using two digits, its representation is
Negative(3)- 100-3=97 97
ASCII (American Standard Code for Information Interchange) - ANSWER>>used 7
bits to represent each character, allowing 128 unique characters
Unicode character set - ANSWER>>16 bits per character, supporting 65,536
unique characters
Text Compression - ANSWER>>The act of reducing the size of a file.
types of text compressions - ANSWER>>Keyword encoding
Run length encoding
Huffman encoding
Keyword Encoding - ANSWER>>Replacing a frequently used word with a single
character
as=%
Update | 100% Correct
Data and computers - ANSWER>>are multimedia devices, dealing with a vast
array of info categories
store, present, and help us modify
- Numbers
Texts
Video/audio
All stored as binary digits (Bits)
Data compression - ANSWER>>Reduction in the amount of space needed to store
a piece of data or the bandwidth to transmit it
Compression ratio - ANSWER>>Size of compressed data divided by size of original
data
lossless - ANSWER>>data can be retrieved without any loss of the original
information
Lossy Compression - ANSWER>>some information is lost permanently in the
process
analog data - ANSWER>>A continuous representation of data, analogues to actual
info it represents
digital data - ANSWER>>A discrete representation, breaking the information up
into separate elements
, Binary representation of data - ANSWER>>a type of data that is represented or
displayed in the binary numeral system; the only category of data that can be
directly understood and executed by a computer; numerically represented by a
combination of zeros and ones
Signed-magnitude number representation - ANSWER>>The sign represents the
ordering, and the digits represent the magnitude of the number
Let 0 through 49 represent 0 - 49
Let 50 through 99 represent -50 through -1
Tens complement representation - ANSWER>>formula to compute the
representation of a negative number
Negative(I)= 10k - I, where K is the number of digits
Ex. -3 is negative(3), so using two digits, its representation is
Negative(3)- 100-3=97 97
ASCII (American Standard Code for Information Interchange) - ANSWER>>used 7
bits to represent each character, allowing 128 unique characters
Unicode character set - ANSWER>>16 bits per character, supporting 65,536
unique characters
Text Compression - ANSWER>>The act of reducing the size of a file.
types of text compressions - ANSWER>>Keyword encoding
Run length encoding
Huffman encoding
Keyword Encoding - ANSWER>>Replacing a frequently used word with a single
character
as=%
