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Y10 Mock Revision Quizizz 2

Total questions: 141

Worksheet time: 2hrs 49mins

Name
Class
Date
1.
Breaking a complex problem down into smaller problems and solving each one individually.
a)
Decomposition
b)
Abstraction
c)
Programming
d)
Algorithmic Thinking
2.
Picking out the important bits of information from the problem, ignoring the specific details that don't matter.
a)
Decomposition
b)
Abstraction
c)
Programming
d)
Algorithmic Thinking
3.
A logical way of getting from the problem to the solution. If the steps you take to solve a problem follow an algorithm then they can be reused and adapted to solve similar problems in the future.
a)
Decomposition
b)
Abstraction
c)
Programming
d)
Algorithmic Thinking
4.
What does this shape represent in flowchart?
a)
Start/Stop
b)
Decision
c)
Process
d)
Input/Output
5.
The process carried out in computer systems is represented by _______________ in flowchart.
a)
Rectangle
b)
parallelogram 
c)
Square
d)
Diamond
6.
What does this shape represent in flowchart?
a)
Input/Output
b)
Process
c)
Decision
d)
Start/Stop
7.
Which is larger?
a)
1TB
b)
A big bite
c)
1GB
d)
1MB
8.
Which is larger?
a)
1500MB
b)
1GB
c)
1TB
d)
1.5GB
9.
How many bits are in a byte?
a)
8
b)
A fair few
c)
112.5
d)
64
10.
What is a bit?
a)
8 megabytes
b)
A piece of something
c)
A single 1 or 0 of data
d)
10
11.
Which is larger?
a)
900 bytes
b)
12MB
c)
650KB
d)
3 bits
12.
What is a nibble?
a)
1000 bits
b)
Half a petabyte
c)
512 KB, half a MB
d)
4 bits, half a byte
13.
How many bytes are in a KB?
a)
1024
b)
8
c)
512
d)
1000
14.
Roughly how big would a 5 minute audio file be?
a)
5KB
b)
5MB
c)
25MB
d)
15.68MB
15.

which combination shows the prefixes in the correct order

a)

kB, MB, GB, TB

b)

kB, GB , MB, TB

c)

kB, TB, MG, GB

d)

GB, MB, TB, kB

16.

What is the decimal equivalent of the hexadecimal number A2

a)

160

b)

162

c)

26

d)

28

17.

Is this binary number odd or even

01001001

a)

definitely odd

b)

can't tell from looking

c)

probably even

d)

definitely even

18.

if you do a logical shift to the left what does that do to the value?

a)

adds 2

b)

multiplies by 2

c)

divides by 2

d)

takes 2 away

19.

if you shift a binary number 2 places to the right what will happen to the value

a)

it will be twice as much

b)

it will be half as much

c)

it will be 4 times as much

d)

it will be a quarter as much

20.

[3.1] A file is 32000 bits in size. What is it in kilobytes?

a)

32 kB

b)

4000 kB

c)

4 kB

d)

3.2 kB

21.

[3.4] If a picture is 100 pixels by 10 pixels and uses 3 bits per pixel for colours how many colours can it have

a)

3000

b)

8

c)

1000

d)

3

22.

[3.1] What is the maximum value an 8 bit binary number can have?

a)

8

b)

255

c)

128

d)

256

23.
What is compression? (1-4)
a)
üTo convert one file to another
b)
To reduce the size of data to save space
c)
To minimize the time taken for a file to be downloaded
d)
To compress something by pressing it very hard
24.
What does Lossy Compression do to files? (4-6)
a)
Increases the file size and keeps the same quality
b)
Eliminates no information at all
c)
Decreases the file size and keeps the same quality
d)
Eliminates unnecessary information in a file to reduce file size
25.
What is Lossless Compression? (4-6)
a)
No information is lost but file size is increased
b)
There is no loss in information at all after compression
c)
Files which have the exact same data after compression
d)
Compression that involves an algorithm
26.
What type of compression does the ZIP format use? (7-9)
a)
Lossy
b)
Lossless
27.
What type of compression would you use to compress a video? (4-6)
a)
Lossy
b)
Lossless
28.
What type of compression would you use to compress a text file (4-6)
a)
lossy
b)
Lossless
29.
What type of compression may remove some of the data?
a)
Lossy
b)
Lossless
30.
Which of the following are not in a compressed format? (7-9)
a)
JPEG
b)
MPEG
c)
Bitmap
d)
MP3
31.
Uncompressed audio and video files require less memory thancompressed files. (1-4)
a)
True
b)
False
32.
JPEG Stands for (4-6)
a)
Joint Photo Exempted Grade
b)
Joint Photographic Experts Group
c)
Junior Photographic Export Group
33.
When is Run Length Encoding used?
a)
When we want to compress patterns of data
b)
When we want to decompress patterns of data
c)
When we want to encode running videos
34.

RLE row 2 of the image

a)

0001000001000

b)

1110111110111

c)

3 0 1 1 5 0 1 1 30

d)

3 1 1 0 5 1 2 0 3 1

35.

RLE row 4 of the image

a)

0001000001000

b)

1110111110111

c)

3 0 7 1 3 0

d)

3 1 6 0 4 1

36.

How many bits would be in each pixel? - bit depth

a)

3

b)

2

c)

1

d)

0

37.

How many bits would be in each pixel?

IF we added 2 more colours to the image

a)

3

b)

2

c)

1

d)

0

38.

How many bits would be in each pixel?

IF we added 5 more colours to the image...

a)

3

b)

2

c)

1

d)

0

39.

What is the bit depth of the image shown, IF it had 256 available colours in each pixel...

a)

8

b)

7

c)

16

d)

4

40.

What is the resolution?

a)

130

b)

13 x 9

c)

145

d)

4

41.

Calculate the file size in B?

a)

130

b)

16.25

c)

14.75

d)

199 B

42.

Calculate the file size in b?

a)

130

b)

16.25

c)

14.75

d)

199 B

43.
Convert 65 to binary
a)
01100001
b)
00100001
c)
01000001
d)
00100101
44.
Convert 37 to binary
a)
00100101
b)
00100011
c)
00100111
d)
01000101
45.
Convert 196 to binary
a)
11000110
b)
11100100
c)
11000100
d)
11010100
46.
Convert 11111111 to decimal
a)
255
b)
245
c)
235
d)
225
47.
If a binary number ends with a 1, it must be...
a)
An odd number
b)
An even number
c)
A prime number
d)
The number 12
48.
What are the only two numbers you can use in binary?
a)
0 and 1
b)
1 and 2
c)
1, 2, 3, 4, 5, 6, 7, 8, 9, 10
d)
1, 2, 4, 8, 16
49.
Add binary numbers shown?
a)
10010000
b)
10001000
c)
10000100
d)
10100000
50.
Add binary numbers shown?
a)
01111011
b)
01101111
c)
01111101
d)
01101101
51.
1111 1110
a)
EF
b)
FE
c)
DE
d)
ED
52.
1010 0011 
a)
63
b)
93
c)
B3
d)
A3
53.
1101 1110
a)
ED
b)
DE
c)
EC
d)
CE
54.
F6
a)
1111 0110
b)
1111 1010
c)
1111 0101
d)
1111 0011
55.

How many bits are used in ASCII

a)

16

b)

1

c)

7

d)

8

56.

HOw many Bytes are used in Unicode

a)

8

b)

16

c)

1

d)

2

57.

The ASCII code is capable of representing non-European languages

a)

TRUE

b)

FALSE

58.

Upper and lower case letters have a different ASCII code

a)

TRUE

b)

FALSE

59.

What is the maximum number of positive integer values that can be represented in 8-bits

a)

16

b)

256

c)

65,536

d)

128

60.

What is the maximum number of positive integer values that can be represented in 7-bits

a)

16

b)

256

c)

65,536

d)

128

61.

ASCII can represent more characters than Unicode

a)

TRUE

b)

FALSE

62.

ASCII stands for...

a)

American Standard Code for Information Interchange

b)

American Scientific Code for Information Interchanging

c)

Absolute Standard Codes for Instruction Interchange

63.
What is an advantage of a vector image?
a)
Images can be scaled up or down with no loss of quality
b)
Individual pixels can be changed, which makes very detailed editing possible
c)
They have a large file size
d)
They look real
64.
What is resolution?
a)
It is the total number of pixels in an image
b)
It is a measure of how many pixels are used in a given area
c)
It is a measure of how much an image has been compressed
d)
It is a measure of how big an object is
65.
What do we call the smallest unit of data that can be represented in an image? (1-4)
a)
Pixel
b)
Dot
c)
Colour
d)
Bit
66.
What is meant by Colour Depth? (4-6)
a)
Number of pixels in the image
b)
The number of colours available for each pixel
c)
How pixelated the image is
67.
How many colours can be represented with a 4 bit colour depth? (7-9)
a)
2
b)
4
c)
16
d)
256
68.
What is the term used to define what must be known about a bitmap,for it to be represented accurately? (4-6)
a)
Microdata
b)
Metadata
c)
Megadata
69.
In modern technology what unit of measurement would be used forscreen size? (4-6)
a)
Pixels per inch (PPI)
b)
PPI) 
c)
Pixels per metre (PPM)
70.
Which of the following is not stored as Metadata about an image? (6-9)
a)
Height
b)
Colour Depth
c)
Resolution
d)
Number of people in the image
71.
Which of the following is not an image file? (4-6)
a)
PNG
b)
JPEG
c)
Bitmap
d)
MPEG
72.
What three colours are used to produce a broad array of colours in a computer system? (1-4)
a)
Green, Red, Orange
b)
Red, Green, Blue
c)
Yellow, Green, Red
73.
 What is the name of the type of graphic that uses shapes of solid colour? (6-8)
a)
Raster
b)
GIF
c)
JPEG
d)
Vector
74.
The density of pixels in an image file is known as:
a)
Resolution
b)
Dimensions.
c)
Transparency.
d)
Compression.
75.
How many combinations are there for a '2 bit' colour?
a)
8
b)
4
c)
16
d)
32
76.
a lossy image is?
a)
 when the data is lost when the file is compressed
b)
when the data isnt lost when the file is compressed
c)
when the image is accidentally lost
d)
when less colours are used
77.
what is a lossless image?
a)
when you have saved the image
b)
when you have forgotten to save the image
c)
when the images is compressed some data is lost
d)
when the image is compressed no data is lost
78.
A vector image is ?
a)
a cartoon image
b)
an image that can be scaled up without losing quality
c)
a poor quality image
d)
are made up of pixels
79.
Which resolution would give me a better quality image?
a)
720p
b)
1080p
c)
4k
d)
480p
80.

What is the resolution?

a)

256

b)

16

c)

324

d)

3000 pixels

81.

What is the file size? - in bytes

a)

32 B

b)

512 B

c)

64 B

d)

112 B

82.

What is the bit depth required for this image?

a)

1

b)

2

c)

3

d)

4

83.
What is 1001 in denary?
a)
8
b)
7
c)
9
d)
15
84.
What is 1110 in denary?
a)
15
b)
13
c)
14
d)
10
85.
Convert hex 55AF into binary?
a)
0101 0101 1110 1111
b)
0101 0101 1010 1111
c)
0111 0101 1010 1111
d)
1111 0101 1010 1111
86.
Convert hex 111112 into binary?
a)
0001 0001 0001 0001 0001 0010 0001
b)
0001 0001 0001 0001 0001 0010
c)
0001 0001 0001 0001 0001 0001
d)
0001 1001 0001 0001 0001 0010
87.
Binary can be used to represent Characters such as ? $ £ ^ R e 9 6?
a)
True
b)
False
88.
Ascii is the most commonly used character set in the english speaking world. Each Ascii character is given .... bits which means it can represent a total of 128 characters.
a)
7
b)
8
c)
1024
d)
Byte
89.
Extended ASCII has 8 bit binary codes allowing for "......." characters?
a)
127
b)
128
c)
255
d)
256
90.
Which is the biggest character set?
a)
ASCII
b)
UNICORN
c)
ACSII
d)
Unicode
91.
Unicode tries to cover ever possible character?
a)
True
b)
False
c)
True except the Null key
d)
True except the Del Key
92.
What is the binary code for "A"?
a)
01000011
b)
01000001
c)
01100001
d)
011000111
93.
What is the binary code for "D"?
a)
01000011
b)
01000001
c)
01000100
d)
011000111
94.
What is the binary code for "$"?
a)
01000011
b)
01000001
c)
01000100
d)
00100100
95.
What is real life sound known as?
a)
Analogue Sound
b)
Digital Sound
96.
How is sound stored on a computer
a)
Digital
b)
Analogue
97.
What is the process called for  converting analogue sound into binary (digital format)?
a)
Conversions
b)
Sampling
c)
Bit Rate
d)
Converting
98.
The longer the sound the smaller the file 
a)
True
b)
False
99.

is how many samples you take in a second.

a)

Sample Rate

b)

Sample Resolution

c)

Binary

d)

File Size

100.

is the number of bits available for each sample.

a)

Sample Rate

b)

Sample Resolution

c)

Binary

d)

File Size

101.

File Size (b) = Sample Rate x Sample Resolution x Length (Sec)

a)

Sample Rate Formula

b)

Sample Resolution Formula

c)

Sample Rate Formula

d)

File Size Formula

102.

Which is the formula to calculate the file size of sound, when being sampled onto a computer system...

a)

File Size (b) = Sample Rate + Sample Resolution + Length (Sec)

b)

File Size (b) = Sample Rating x Sample definition x Length (Sec)

c)

File Size (b) = Sample Rate x Sample Resolution x Length (Hours)

d)

File Size (b) = Sample Rate x Sample Resolution x Length (Sec)

103.

10 Seconds of audio, sample resolution of 8 bits and a sample rate of 2. What is the correct file size?

a)

145

b)

160

c)

180

d)

200

104.

100 Seconds of audio, sample resolution of 4 bits and a sample rate of 10. What is the correct file size?

a)

5000

b)

4000

c)

3500

d)

3850

105.

5 Seconds of audio, sample resolution of 2 bits and a sample rate of 2. What is the correct file size?

a)

10

b)

20

c)

15

d)

32

106.

Increasing the sample rate means the analogue recording is sampled more often?

a)

True

b)

False

107.

Increasing the sample rate means the analogue recording is sampled less often?

a)

True

b)

False

108.

Increasing the sample resolution means the digital file picks up quieter sounds even if they happening at the same time as louder ones.


This will also result in a sampled sound that is closer to the quality of the original analogue recording.

a)

True

b)

False

109.

Increasing the sample resolution means the file size will be smaller and pick up less high and low sounds.

a)

True

b)

False

110.

Increasing either the sample rate or sample resolution will increase the file size?

a)

True

b)

False

111.

What is the resolution (bits) of the sound being sampled in the image?

a)

1b

b)

2b

c)

3b

d)

4b

112.

What is the sample rate (Hz) of the sound being sampled in the image?

a)

1

b)

5

c)

2

d)

4

113.

What is the file size?

a)

5

b)

20

c)

2

d)

18

114.

Cyber security consists of the processes, practices and technologies designed to protect networks, computers, programs and data from attack, damage or unauthorised access

a)

True

b)

False

115.

Businesses, Banks, Shops, Schools and Exam Boards all keep data on you and are required to keep it safe?

a)

True

b)

False

116.

Hacktivism is the act of hacking a website or computer network in an effort to convey a social or political message. The person who carries out the act of hacktivism is known as a hacktivist.

a)

True

b)

False

117.

Hacktivism is the fraudulent practice of sending emails purporting to be from reputable companies in order to induce individuals to reveal personal information, such as passwords and credit card numbers.

a)

True

b)

False

118.

Weak Passwords, mario kart shells and M16 (Assault Rifle) from fortnite are ALL Cyber Security Threats?

a)

True

b)

False

119.

Weak Passwords, misconfigured access rights, removable media, unpatched or outdated software, social engineering techniques and malicious code are All cyber security threats to businesses and organisations?

a)

True

b)

False

120.

Qwerty123 is a Strong Password (i.e. not a cyber security risk)

a)

True

b)

False

121.

Users should always change their default passwords and PINs on new electronic devices at work or at home?

a)

True

b)

False

122.

Businesses should aim to detect vulnerabilities in their networks/computer systems?

a)

True

b)

False

123.

Detecting Vulnerabilities in a computer system/network also includes employee behaviours and procedures?

a)

True

b)

False

124.

Penetration Test is...the selling of a company's products in a particular market or area.

a)

True

b)

False

125.

Penetration Test is...(also called pen testing) is the practice of testing a computer system, network or Web application to find vulnerabilities that an attacker could exploit.

a)

True

b)

False

126.

White box testing, testers are given no more information than any potential hacker may have

a)

True

b)

False

127.

Black Box testing, testers are given no more information than any potential hacker may have

a)

True

b)

False

128.

In white box testing, testers are given as much information as an ‘insider’ may have, in order to determine how much damage a rogue employee could do to a system

a)

True

b)

False

129.

In black box testing, testers are given as much information as an ‘insider’ may have, in order to determine how much damage a rogue employee could do to a system

a)

True

b)

False

130.

White Hats’ are ethical hackers, employed to put their expertise to good in finding system vulnerabilities before the Black Hats’ abuse them

a)

True

b)

False

131.

Spetsnaz Helmet (Level 3) will protect any computer system from a cyber security headshot.

a)

True

b)

False

132.
How does a computer virus infect a pc?
a)
Email attachments
b)
Attached to files on memory sticks
c)
Suspicious web links
d)
All of the above
133.

Malware is the term used to refer to a variety of hostile or intrusive software

a)

True

b)

False

134.

Malware is the term used to describe mail that is phishing for personal data.

a)

True

b)

False

135.

Malware is the term used to describe mail that is phishing for personal data.

a)

True

b)

False

136.

Select ALL the malware

a)

Worm

b)

Trojan Horse

c)

WAN

d)

Virus

137.

is a type of malware that spreads through normal programs. Once your device has a __________ it may spread easily and quickly.


this type of malware might just slow down your device - or it might be so severe you lose all your applications and documents!

a)

Virus

b)

Trojan Horse

c)

WAN

d)

Worm

138.

Malware that can spread from device to device, but unlike a virus they don’t need to attach themselves to other programs.


Malware that can copy themselves hundreds of times, so they can very quickly harm your device and other devices.


Malware that might copy itself onto your email account and then send a copy to all of your email contacts!

a)

Virus

b)

Trojan Horse

c)

WAN

d)

Worm

139.

Malware that pretends it will be a useful and safe program, when actually it will try to attack your device.

a)

Virus

b)

Trojan Horse

c)

WAN

d)

Worm

140.

Malware that attaches to other programs and software

a)

Virus

b)

Trojan Horse

c)

Worm

141.

Spyware is software that gathers information about a person or organisation without their knowledge?

a)

True

b)

False

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