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DATA REPRESENTATION

Total questions: 63

Worksheet time: 31mins

Name
Class
Date
1.

The fundamental unit of data storage in a computer.

a)

Binary digits (bits)

b)

Stationary bytes (sb)

c)

Digital Station (dist)

d)

Auction Division (aucd)

2.

1024 bytes is equivalent to what?

a)

1 kilobyte

b)

1 megabyte

c)

1 gigabyte

d)

1 terabyte

3.

How many bits are there in 1 byte?

a)

8

b)

16

c)

32

d)

1024

4.

1 megabyte is equivalent to...

a)

1024 kilobytes

b)

1024 bytes

c)

1024 gigabyte

d)

1024 terabyte

5.

1 gigabyte is equivalent to...

a)

1024 kilobytes

b)

1024 megabyte

c)

1024 gigabyte

d)

1024 terabyte

6.

Which of the storage has the smallest amount of storage capacity?

a)
b)
c)
d)
7.

The binary number system uses ___ numbers.

a)

three

b)

two

c)

one

d)

ten

8.

Convert 20 (Decimal) into hexadecimal

a)

1F

b)

F

c)

14

d)

A1

9.

0011 + 0111

a)

1010

b)

1011

c)

0111

d)

1100

10.

1001100 - 01000110

a)

00000111

b)

01001110

c)

00000110

d)

00011100

11.

Convert 00100010 to hexadecimal

(a)  

12.

Which is the correct denary number for 1011

a)

10

b)

5

c)

8

d)

11

13.

What is the correct denary number for 00100101

a)

36

b)

37

c)

48

d)

27

14.

Which is the correct binary number to represent 46?

a)

00101110

b)

00011111

c)

01000100

d)

00110000

15.

Convert the following denary number to binary (8 bits): 28

(a)  

16.

Convert the hex number into binary:

1A

a)

0001 1010

b)

1010 0001

c)

0001 1011

d)

0001 1100

17.

Convert the hex number into binary:

24

a)

0100 0010

b)

0010 0100

c)

0011 1001

d)

0001 1100

18.
Convert the Hex number B9 to binary.
a)
10111001
b)
10111000
c)
10111101
d)
10101001
19.
What is 1111 converted into denary?
a)
15
b)
16
20.

Which of these are hexadecimal digits?

a)

F

b)

G

c)

6

d)

0

e)

H

21.
Convert the binary number 11010110 to Hex
a)
A3
b)
B4
c)
C5
d)
D6
22.

Computers use binary to store data.

a)

True

b)

False

23.
What does "MAC" stand for in "MAC Address"?
a)
Media Access Control
b)
Mandatory Access Control
c)
Micro Access Control
d)
Media Access Certificate
24.
Which of these is NOT a valid MAC Address?
a)
9a-36-3e-52-30-f3:96
b)
70-9B-C5-B5-B3-68
c)
80.1a.e3.4d.b1.b2
d)
ff:ff:ff:ff:ff:ff
25.
Where is a MAC address most likely to be stored?
a)
ROM
b)
RAM
c)
SDRAM
d)
CD-ROM
26.

How many bits are in an ipv4 address?

a)

16

b)

32

c)

64

d)

128

27.

What is IPV6 stand for ?

a)

Intel protocol version 6

b)

internet provide vision

c)

Internet Protocol version 6

d)

internet protocol version 4

28.

IP stands for __________.

a)

Internet Protocol

b)

Identification Protocol

c)

Internet Address

d)

Internet Person

29.

What does HTML stand for?

a)

Hyper Tremendous Movie Lines

b)

Hyper Text Markup Language

c)

Hey Thanks for Making me Late

30.

Web pages starts with which of the following tag?

a)

<form>

b)

<HTML>

c)

<body>

d)

<Title>

31.

What is the correct HTML element for inserting a line break?

a)

<lb>

b)

<BREAK>

c)

<br>

d)

<break>

32.

What does ASCII stand for?

a)

Australian Standard Code for Information Interchange

b)

Aberdonian Standard Code for Information Interchange

c)

American Standard Code for Information Interchange

d)

African Standard Code for Information Interchange

33.

How many bits does ASCII use for each character?

a)

5

b)

6

c)

7

d)

8

34.

What is ASCII used for?

a)

Storing text

b)

Storing sounds

c)

Storing images

d)

Storing video

35.

What does ASCII do?

a)

Converts images into binary

b)

Converts sound into binary

c)

Converts text into binary

d)

Converts the typed language into American English

36.
ASCII is:
a)
a numerical system that has 2 rather than 10 as a base.
b)
the most common format for text files in computers and on the Internet
37.
Convert 65 to binary
a)
1000001  
b)
1000010
c)
1000011
d)
1100010
38.

Tiny squares called ___________ are the building blocks of all digital images.

a)
elements
b)

dots

c)
pixars
d)
pixels
39.

Colour depth is the term used to describe ________

a)
how many colours have been used to make the picture
b)
how many colours there in each pixel
c)
none of these
d)
the number of bits used to indicate the colour of a single pixel
40.

Colour depth means ________________

a)
the difference in brightness between objects or regions
b)

the relationship between picture width and its height.
c)
the overall lightness or darkness
d)

the (fixed) number of binary digits used to represent each pixel’s colour is the  colour depth

41.
How many combinations are there for a '2 bit' colour?
a)
8
b)
4
c)
16
d)
32
42.

How do you rate your understanding of the topic?

a)

Excellent - Distinction level

b)

Good - Merit level

c)

I will pass

d)

I need help

43.
Bitmap or Vector?
a)
Bitmap
b)
Vector
44.
Bitmap or Vector?
a)
Bitmap
b)
Vector
45.
Bitmap or Vector?
a)
Bitmap
b)
Vector
46.

__________ compression means that the file is identical, bit for bit, to the original uncompressed file.

a)

Lossy

b)

Lossless

c)

Compressed

d)

File

47.

_________ compression is another technique that changes the original file a little bit.

a)

Lossy

b)

Lossless

c)

Compressed

d)

File

48.

Lossy compression is commonly used for image, video, and audio files because human sight and hearing are imperfect and cannot detect small losses in the data.

a)

TRUE

b)

FALSE

49.

Which kind of file would be hurt most by a lossy compression algorithm?

a)

A text document

b)

An audio file containing music

c)

An audio file containing speech

d)

A digital photograph

50.

Compressed files consume less storage space and transmit _________ than uncompressed files

a)

much more slowly

b)

much more quickly

c)

larger

d)

more information

51.
Makes the file smaller by deleting parts of the file permanently (forever)
a)
Lossy Compression
b)
Lossless Compression
52.
Makes the file smaller by giving repeated patterns/colours a specific code
a)
Lossy Compression
b)
Lossless Compression
53.
What would you use compression for?
a)
Making an image file smaller
b)
Modifying an image 
54.

Which of the following would not be suitable for Lossy Compression?

a)

Images

b)

Music

c)

Videos

d)

Text

55.

What would you use Compression for?

a)

Making a file smaller

b)

Increasing the files size

c)

Modifying a file

56.

.exe

a)

Executable

b)

Spreadsheet

57.

.png

a)

Document

b)

Image

58.

.pdf

a)

Document

b)

Image

59.

.zip

a)

Adobe Premiere Project

b)

Compressed Folder

60.

What file type is .PDF?

a)

Audio

b)

Video

c)

Image

d)

Document

61.

What file type is .MP3?

a)

Audio

b)

Video

c)

Image

d)

Document

62.

Convert Binary into Denary:

0110 1100

a)

108

b)

107

c)

106

d)

109

63.

Convert Denary into Hexadecimal:

2004

a)

DE4

b)

7D4

c)

BE4

d)

65D

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