CSI101 chapter 4
F
Negative fractional numbers cannot be internally represented in a computer.
T
Negative powers are used to represent the fractional portion of numbers.
T
Raw audio samples are stored in files such as WAV files.
F
Signed and unsigned numbers in the computer are designed to always take up a different number of bits.
T
Sounds are stored in the computer in a manner very similar to images.
T
Table look-ups can be used to convert a number from one base to another.
T
The Unicode character standard is compatible with the extended ASCII standard.
F
The Unicode method of character representation is fast becoming obsolete.
amplitude
The computer samples sound at fixed intervals and each sample is assigned a binary value according to its ____. a. frequency c. amplitude b. period d. pitch
positional
The concept of ____ value is common to all modern numbering systems. a. positional c. deterministic b. radical d. random
T
The conversion algorithm from base 10 to another base utilizes a sequence of remainders to construct the new number.
256
The decimal equivalent of 10016 is ____. a. 116 c. 256 b. 160 d. 1600
F
The decimal equivalent of 111112 is 31000.
T
The difference between adding numbers in base 10 and any other base lies in the carry process.
256
The eight bit extended ASCII (American Standard Code for Information Interchange) character set can be used to represent ____ characters. a. 128 c. 512 b. 256 d. 34,168
T
The hexadecimal number system uses letters to represent digits beyond nine.
F
The hexadecimal numbering system has seventeen unique digits.
F
The hexadecimal numbering system runs out of digits after ____. a. E c. G b. F d. H
0.0001
The number 10^-4 evaluates to which of the following? a. 0.000001 c. 0.0001 b. 0.00001 d. 10000
T
The number of pixels in each row and column defines the resolution of a display.
F
The number of words used for each sound sample determines how many unique amplitude levels can be represented.
F
The term radix is synonymous with positional value.
sign
To find the ____ of a given bit, flip it to the opposite state. a. root c. position b. complement d. sign
16
Unicode character representation uses a(n) ____ bit standard. a. 4 c. 8 b. 7 d. 16
compression
Various ____ techniques have been designed to allow the same image information to be stored in a smaller file. a. consolidation c. scanning b. compression d. resolution
11102
What binary number results from adding 1112 and 1112? a. 10002 c. 11102 b. 10112 d. 11112
19
What is the result of converting the decimal number 25to a base 16 equivalent? a. F c. 1A b. 19 d. 31
110012
What is the result of converting the decimal number 25to a base 2 equivalent? a. 100012 c. 110012 b. 100112 d. 111012
MPEG
Which of the following is an example of a video compression format? a. BMP c. MPEG b. GIF d. TIF
two's complement
Which of the following methods represents the most common way of storing signed numbers? a. one's complement c. integer complement b. binary complement d. two's complement
F
Whole numbers or integers are internally represented by the computer as hexadecimal numbers.
Binary
____ patterns contain information about the color and brightness of a pixel. a. Binary c. Decimal b. Octal d. Hexadecimal
bit
A ____ is a basic unit of storage that can have a value of either 1 or 0 (on or off). a. nibble c. byte b. word d. bit
byte
A ____ is a group of eight bits. a. byte c. nibble b. word d. blip
discriminant
A ____ is identified by the number of digits a numbering system has, including zero. a. root c. determinant b. discriminant d. base
pixel
A ____ is the smallest unit that can be displayed on a computer monitor. a. micron c. twip b. picon d. pixel
frequency
A sound consists of a waveform that has amplitude (volume) and a ____ (pitch). a. frequency c. phase angle b. phase shift d. period
21
According to positional value, the binary number 101012 represents ____ things. a. 3 c. 12 b. 5 d. 21
4
An 8-nibble word is more likely to be referred to as the equivalent ____-byte word. a. 2 c. 8 b. 4 d. 16
F
As the resolution numbers get larger for a monitor, the size of each pixel gets larger.
hexadecimal
Displays containing the contents of a computer's memory or the hard disk are often referred to as ____ memory dumps. a. error c. decimal b. hexadecimal d. octal
4
Each hexadecimal digit relates directly to a ____-bit binary pattern. a. 2 c. 8 b. 4 d. 16
F
Every computer game, program, picture, or sound is stored in the computer as a series of decimal digits.
T
For any quantity, there is a number in any base to represent it.
T
Half of a byte is sometimes referred to as a nibble.
T
Hexadecimal numbers are used as a shorthand method to represent binary values.
mantissa
In scientific notation, the method of displaying numbers uses a(n) ____ and an exponent. a. mantissa c. abscissa b. asymptote d. ordinate
F
In the common monitor resolution specified as 1024 X 768, the number 1024 represents rows and 768 represents dots (or pixels).
F
It is not possible to learn to program or to manage a database without understanding binary and hexadecimal number systems.
F
Modern computers are capable of storing hexadecimal information.
