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WorksheetsData Representation
Total questions: 27
Worksheet time: 18mins
Name
Class
Date
1.
In computing, a bit is
a)
8 bytes
b)
a single 0 or 1 on or off
2.
A byte is
a)
8 bits
b)
4 bits
3.
A kilobyte is
a)
1024 bits
b)
1024 bytes
4.
How many megabytes are in 1 gigabyte?
a)
1024
b)
1
c)
1024 x 10 = 10240
5.
A kilobyte is usually rounded to 1000 bytes. But actually it is _____ bytes:
a)
1024
b)
512
c)
1048
d)
9600
6.
A gigabyte consists of 1024:
a)
megabytes
b)
terabytes
c)
kilobytes
d)
nibbles
7.
The following is a correct order of units of storage from lowest to highest:
a)
a bit, a nibble, a byte, a kilobyte, a megabyte, a gigabyte, a terabyte
b)
a bit, a byte, a nibble, a kilobyte, a megabyte, a gigabyte, a terabyte
c)
a bit, a nibble, a byte, a megabyte, a kilobyte, a gigabyte, a terabyte
d)
a byte, a bit, a nibble, a megabyte, a kilobyte, a gigabyte, a terabyte
8.
Which is the smallest form of data?
a)
Bit
b)
Byte
c)
Nibble
d)
8 Binary Digits
9.
Which is larger?
a)
Megabyte
b)
Gigabyte
10.
Which is larger?
a)
Bit
b)
Byte
11.
Quality of an image depends on:
a)
Resolution
b)
Metadata
c)
Screen size
d)
Computer's speed
12.
Resolution is measured in:
a)
Pixels per mm or per inch
b)
Print size.
c)
Milimeters.
d)
Bytes.
13.
Identify a true statement:
a)
Image files can be compressed by setting pixels with similar colour to the exactly same colour.
b)
Compressing files improves their quality.
c)
Resolution doesn't affect the printed size of an image.
d)
Black and white images have colour depth of two bits.
14.
Colour depth refers to:
a)
How many bits are used in a file to store colour information in every pixel
b)
Resolution divided by the number of colours in an image.
c)
Degree of file compression applied to an image file.
d)
Repeated resampling of an image.
15.
What is a pixel?
a)
Picture element - the small dots that make up an image.
b)
How an image is stored on the computer.
c)
A type of image
d)
A special type of photograph
16.
A bitmap image is made up of
a)
Pixels
b)
Colours
c)
Sounds
d)
Samples
e)
Characters
17.
The number of pixels per inch in an image is known as the
a)
Dimensions
b)
Colour depth
c)
Resolution
d)
Megapixels
18.
The following is not true about the ASCII character set:
a)
example: Mount Everest
b)
Usually, is made up of 7 bits
c)
Is not enough to represent languages other than English
19.
Identify a true statement:
a)
Standard ASCII only uses the first 128 positions in the table.
b)
Standard ASCII only uses the first 255 positions in the table.
c)
ASCII has more letters than Unicode
20.
Uppercase characters in ASCII:
a)
Appear before lowercase characters.
b)
Appear after lowercase characters.
c)
Don't get unique codes to store their position in binary.
21.
Computers use binary because they have circuits which are either on or off, which gives them two states to work from to make calculations and run processes - True or False?
a)
True
b)
False
22.
What is the largest number you can represent with 8 bits?
a)
64
b)
128
c)
200
d)
255
23.
What digits are part of the binary number system?
a)
0-9
b)
0-F
c)
0 and 1
d)
1-9
24.
Convert the binary number 1110 to decimal.
a)
3
b)
10
c)
15
d)
14
25.
Convert the binary number 1010 to decimal.
a)
8
b)
10
c)
9
d)
7
26.
Convert the decimal number 4 to binary.
a)
1000
b)
0101
c)
0010
d)
0100
27.
Convert the decimal number 14 to binary.
a)
1110
b)
1100
c)
1011
d)
0101
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