Deck 7: Representing Information Digitally

Question 1

A bit is larger than a byte .

Answer 1

False

Question 2

The byte is the standard unit for computer memory .

Answer 2

True

Question 3

A key property of the Presence and Absence (PandA) representation is that it is discrete . Either a phenomenon is present or it is not; either the logic is true or false .

Answer 3

True

Question 4

Extended ASCII is a 9-bit code .

Question 5

A red, yellow, and green traffic light is a good example of a binary system .

Question 6

The term bit is a contraction of bite digit .

Question 7

The term bit was originally adopted because early computer designers interpreted the two patterns as 1 and 0, the digits of the binary number system .

Question 8

The PandA unit is known as a bit .

Question 9

An important property of metadata is that it is intertwined with the information that it describes .

Question 10

The tag characters included with the content characters of the digitized Oxford English Dictionary increase the size of the file compared with plain text .

Question 11

The original spelling of the term byte came about because of a spelling error .

Question 12

Place value representation is associated with numbers in the base 10 system but not numbers in the binary system .

Question 13

The 7-bit ASCII codes are part of UTF-8 .

Question 14

Every bit can exist in one of two states: 0 or 1 .

Question 15

Which of the following places information in order by using non-digit symbols?

A) PandA representation
B) bytes
C) a collating sequence
D) All of these

Question 16

How many bits does each hexadecimal digit require?

A) 16
B) 4
C) 2
D) hex is not measured in bits

Question 17

The Hawaiian alphabet has 18 symbols . How many bits are needed to represent just these symbols?

A) 16
B) 2
C) 5
D) 28

Question 18

The original version of ASCII used

A) 8-bit code
B) 4-bit code
C) 7-bit code
D) 16-bit code

Question 19

________ refers to whether a number is even or odd .

A) The binary system
B) Parity
C) The place system
D) PandA

Question 20

The NATO broadcast alphabet

A) is efficient in minimizing the amount of memory needed to store each letter
B) makes it difficult to distinguish between different letters
C) encodes letters as words
D) encodes all digits using unusual names

Question 21

Using even parity, a normal byte, such as 1010 0011, would

A) not use a ninth bit
B) include a ninth bit, set to 0
C) use a ninth bit to determine which bit was changed if an error occurs
D) include a ninth bit, set to 1

Question 22

The PandA system

A) is formed from 256 letter representations
B) has 10 digits
C) contains gray
D) is binary

Question 23

The familiar UPC bar code uses more than the minimum number of bits to code symbols

A) so the code will fill up the required amount of space on the package
B) so additional information can be coded
C) to allow for expansion in the future
D) so the reader can tell whether or not the product is upside down

Question 24

Select all that apply . Which of the following is TRUE about extended ASCII code?

A) It was adopted by IBM as the standard for character representation .
B) It was developed in the United States .
C) It is now known as ISO-8859-1 .
D) It replaced Unicode in 2010 .

Question 25

In binary representations, an encoding that switches a 0 to a 1 or a 1 to a 0 is called the ________ .

Question 26

An 8-bit sequence on the computer is known as a(n) ________ .

Question 27

Although ASCII and its variations are widely used, ________ is a more complete representation . It uses up to four bytes to encode about 100,000 symbols .

Question 28

Four bits is known as a(n) ________ .

Question 29

________ is information that describes the properties of other information .

Question 30

________ are the most common way to provide metadata .

Question 31

The number of digits in a numbering system is its ________ or radix .

Question 32

________ refers to whether a number is odd or even .

Question 33

________ is the property of binary numbers in which the number of 1-bits is even .

Question 34

A coding scheme that uses 8-bit symbols has ________ possible combinations .

Question 35

A(n) ________ sequence is an ordering for a set of symbols used to sort them, such as alphabetical ordering .

Question 36

________ is a way to represent Unicode using variable-length codes .