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Paper 2 AQA computer science mock

Total questions: 102

Worksheet time: 54mins

Name
Class
Date
1.

8 bits is also known as

a)

a byte

b)

a nibble

c)

a bit

d)

a microbit

2.

Convert the binary number 01011011 to a decimal value.

a)

91

b)

81

c)

101

d)

97

3.

Convert the binary number 01011011 to a hexadecimal value.

a)

5B

b)

5A

c)

6B

d)

7A

4.

Convert the binary number 01011011 to a hexadecimal value.

a)

5B

b)

5A

c)

6B

d)

7A

5.

The ASCII value for j is 106. What is the ASCII value for f?

a)

102

b)

112

c)

109

d)

101

6.

As the number of pixels used to represent the image falls, then so does the ______?

a)

resolution

b)

picture size

c)

compression rate

d)

amount of colours

7.
ROM is non-volatile memory
a)
True
b)
False
8.
Which of these is the largest file size?
a)
GB
b)
Nibble
c)
MB
d)
KB
9.
Which of these is the largest file size?
a)
TB
b)
B
c)
KB
d)
GB
10.
What does ROM stand for?
a)
Random Only Memory
b)
Random Only Memory
c)
Rapid Only Machine
d)
Read Only Memory
11.
Volatile memory means it does not get deleted when the computer is switched off
a)
True
b)
False
12.
ROM stores start up instructions such as the bootstrap loader
a)
TRUE
b)
FALSE
13.
What does the RAM store?
a)
Operating system, programs and data which are currently being used
b)
A program used to start the computer called the �boot program� or BIOS
c)
All programs and documents stored on the computer
14.
It is better to have more ROM because the computer will boot up quicker.
a)
FALSE
b)
TRUE
15.

What are the disks inside a hard disk drive called?

a)

Disk

b)

Platter

c)

Plate

d)

Saucer

16.
Which is the Optical Storage
a)
DVD
b)
HDD
c)
SSD
d)
USB
17.
Which type of storage has moving parts?
a)
Hard Disk Drive
b)
Flash Drive
c)
DVD
d)
Solid State Drive
18.
Which storage does NOT use light?
a)
DVD
b)
CD
c)
HDD
d)
Blue Ray
19.
Magnetic disks are organised into.....
a)
circles and wedges
b)
sectors and tracks
c)
chunks and stretches
d)
disks and docks
20.
A disadvantage of hard drives is
a)
They have moving parts
b)
They are volatile
c)
They don't last long
d)
They are hard to use
21.
Optical storage uses what for 0s and 1s
a)
Pits and pots
b)
Pits and lands
c)
Highs and Lows
d)
Light and dark
22.
Which is a disadvantage of cloud storage?
a)
It's expensive
b)
It doesn't last long
c)
It could be a security risk
d)
It's 
23.

Which of these are logic gates?

a)

AND

b)

OR

c)

NOT

d)

IF

e)

ELSE

24.

What is the output of an AND gate if its inputs are 1 and 1?

a)

1

b)

0

25.

What is the output of an AND gate if its inputs are 1 and 0?

a)

1

b)

0

26.

What is the output of an OR gate if its inputs are 0 and 1?

a)

1

b)

0

27.

Which logic gate does this symbol represent?

a)

AND

b)

OR

c)

NOT

d)

IF

e)

ELSE

28.

Which logic gate does this symbol represent?

a)

AND

b)

OR

c)

NOT

d)

IF

e)

ELSE

29.

What is the function of a NOT gate?

a)

Inverts its input

b)

Outputs 1 if both inputs are 1

c)

Prevents errors

d)

Outputs 0 if both inputs are 0

30.
A truth table lists every possible combination of input and the resulting output
a)
True
b)
False
31.
Which gate does this symbol represent? 
a)
NOT
b)
AND
c)
OR
32.
What is the main function of the CPU?
a)
To carry out processing of the data.
b)
To help with playing games.
c)
To fetch instructions from memory, decode them and execute the instructions.
d)
To heat up the computer.
33.
What is the job of the control unit?
a)
It carries out calculations
b)
It stores information.
c)
It does nothing.
d)
It controls the input and output of data to make sure that it gets to the right place.
34.
What does CPU stand for?
a)
Control Processing Unit
b)
Central Processing Unit
c)
Central Power Unit
d)
Center Power Unit
35.
How does clock speed affect computer performance?
a)
The higher the clock speed the slower the computer will run.
b)
It improves the amount you can store on the computer.
c)
The higher the clock speed the better the performance.
d)
It will make loading program slower
36.
What is a bus?
a)
A circuit that connect one part of CPU to other components.
b)
A type of long term memory
c)
A type of permanent memory
d)
A method of transport
37.
What is cache memory?
a)
A very large, temporary memory
b)
A very small but expensive memory
c)
It is used to store data and programs permanently
d)
It is a type of payment
38.
What are registers used for?
a)
To check that students are in school.
b)
To temporarily hold bits of data needed by the CPU.
c)
To make sure that the CPU runs properly.
d)
To make the CPU faster.
39.
What happens at the Decode step of the fetch-decode-execute cycle?
a)
The CPU makes sense of the instructions.
b)
The CPU fetches the information from RAM.
c)
The instructions are executed.
40.
CPU carries out a cycle called___. 
a)
Execute-decote-fetch
b)
Fetch-decode-execute
c)
Fetch-execute-decode
d)
Decode-execute-fetch
41.
A CPU can contain one or more processing units. Each unit is called a ___.This is one of the  key factors about CPU architecture that affect its performance.
a)
Core
b)
Intel
c)
AMD
d)
Megabite
42.
Indicates how fast the CPU can run
a)
Cache size
b)
Core
c)
Intel
d)
Clock speed
43.

Describe the tasks that the arithmetic and logic unit carries out

a)

Fetches the data/instructions, decodes it and sends the signals via buses to the hardware components.

b)

Carries out calculations and comparisons, to see if one value is larger than another.

44.

Which of these is an advantage of cloud storage?

a)

The user has no control over their data

b)

Many programs can be run at the same time, regardless of the processing power of your device

c)

Accessible anywhere with an internet connection

d)

Portability

45.

What is cloud computing?

a)

Storing files on the Internet

b)

Running programs on a remote server

c)

Running an operating system

d)

All of the above

46.
Facilities that house large collections of servers are called _____.
a)
Data Centers
b)
Computer Processing Plants
c)
Internet Routing Facilities
d)
Cloud Computing Centers
47.

What is cloud storage

a)

Servers hidden in clouds

b)

Closed Locations Of Underground Drill Storage

c)

A type of storage that can be accessed with an internet connection

d)

A type of storage that can be accessed in the clouds

48.

What is a disadvantage of cloud computing?

a)

It is vulnerable to hacking

b)

The storage can be easily expanded

c)

Portability

d)

All of the above

49.

Application software is...

a)

help the user run specific tasks like word processors, web browser, email, clients, games, etc

b)

run tasks like the operating systems, utilities, etc

c)

help the user run things down

d)

run tasks like the doing my homework, revision, etc

50.

What runs tasks like the operating systems, utilities, etc

a)

Embedded systems

b)

Application software

c)

System software

d)

Dedicated systems

51.

The five parts to the CPU are:

a)

transistors, processing things

b)

Control Unit, Arithmetic Logic Unit, Cache, Clock, Buses

c)

Power supply, fan

d)

CU, ALU, Cache, Clock, Buses, Registers

52.

The chap who came up with the design in 1945 that shows how computers work...

a)

Von Neuman

b)

Van Neumann

c)

Van Neuman

d)

Von Neumann

53.

Optical Disc are

a)

cheap and portable

b)

cheap and accessible

c)

easily scratched

d)

great for long term use

54.

What manages the hardware and runs the software?

a)

Computer Systems

b)

Dedicated Systems

c)

Embedding Systems

d)

Operating Systems

55.

Which of these could protect your computer data? (more than one answer!)

a)

Locking your computer away

b)

Installing anti-virus software

c)

Only using computers during the day

d)

Updating your operating system software

56.

Which of the following things can protect against malware

a)

Regular software updates

b)

Educating users

c)

Firewalls

d)

Recording keystrokes

e)

Only using the back door

57.

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

a)

True

b)

False

58.

Select ALL the malware

a)

Worm

b)

Trojan Horse

c)

WAN

d)

Virus

59.

A trojan would typically...

a)

hide on USB memory sticks.

b)

be disguised as an email attachments.

c)

be disguised as legitimate software.

d)

spread through dodgy web links

60.

What are the two main types of software?

a)

Application and Utility

b)

RAM and ROM

c)

Firmware and Software

d)

Windows and Linux

61.

Which provides the interface between the user applications and computer hardware?

a)

the operating system

b)

utility programs

c)

ROM

d)

solid state drive

62.

The operating system is responsible for

a)

managing the CPU

b)

managing memory

c)

providing an interface to the user

d)

all of these

63.

The biggest WAN

a)

Internet

b)

Intranet

c)

Extranet

64.

What is a protocol?

a)

The law of computers

b)

set of rules for how devices to communicate

c)

set of ideas of communication

d)

processes to which devices must obey

65.

Which model has 4 layers?

a)

UCP/UP

b)

TCP/IP

c)

CS/IP

d)

UDP/IP

66.

Responsible for packet switching

a)

TCP

b)

UDP

c)

IP

d)

FTP

67.

Which of the TCP/IP model layers is responsible for breaking down the message into packets?

a)

Network

b)

Application

c)

Transport

d)

Internet

68.

Which is the first layer of the TCP/IP model?

a)

Network

b)

Application

c)

Transport

d)

Internet

69.
What is a network?
a)
Two or more computers connected to each other
b)
Computers in a circle
c)
Clients receiving data from servers
d)
Spiders doing a job
70.
Why are IP addresses needed?
a)
So the user knows how to send emails
b)
So the router can speak to WiFi
c)
So the Internet knows where to send information
d)
So the header can see the control information
71.

Which of the following is not the layer of TCP/IP protocol.

a)

Physical layer

b)

Link layer

c)

Network layer

d)

Transport layer.

72.
Which protocol would you use to transfer files?
a)
FTP
b)
SMTP
c)
POP3
d)
HTTP
73.

TCP is a(n) ........... transport protocol.

a)

Protocol delivery

b)

Reliable

c)

Best-effort delivery

d)

Effortless delivery

74.
What is an advantage for SMTP?
a)
If you delete the email it is still stored in the server
b)
You do not have to be logged in to the Internet to read your messages
75.
Which protocol governs the way we transfer and load hypertext?
a)
FTP
b)
SMTP
c)
POP3
d)
HTTP
76.
IMAP is the general email protocol for sending emails between servers
a)
True
b)
False
77.
Which protocol does this symbolise?
a)
HTTPS
b)
SMTP
c)
FTP
d)
IMAP
78.
Which part of TCP/IP prepares the message for being sent and reassembles any incoming messages?
a)
TCP
b)
IP
79.

Which network could use Bluetooth to connect devices?

a)

PAN

b)

LAN

c)

WAN

80.

What type of network topology is show in the image?

a)

Bus topology

b)

Star topology

c)

Line Topology

d)

Mesh Topology

81.

What type of network topology is usually used in Home Networks?

a)

Bus Topology

b)

Star Topology

82.
What does "NIC" stand for?
a)
Network Interface Controller
b)
National Internal Communication
c)
Network Interface Communication
d)
Native Interface Communication
83.

Setting to block MAC Address of the computer or mobile devices?

a)

IP Filtering

b)

MAC Filtering

c)

Traffic Filtering

d)

Address Filtering

84.

Josh has an uneasy feeling that his home network could be vulnerable to outsiders. What can Josh use to control access to his network....?

a)

Port filtering

b)

IP blocking

c)

MAC filtering

d)

Ethernet filtering

85.

CBA Corporation is installing a new wireless router for their small SOHO network and they want to make sure that only specific client machines can connect. What can their technician use to make sure this happens.....?

a)

Port forwarding

b)

WPS

c)

MAC filtering

d)

DMZ

86.

Which of the following is not a social engineering technique?

a)

Blagging

b)

Hacking

c)

Phishing

d)

Pharming

87.

Which of the following most closely matches the definition of 'Blagging'?

a)

Sending an e-mail to a user pretending to be someone else

b)

Hacking a person's computer

c)

Tricking a person into revealing some personal information

d)

Observing a legitimate user entering a password

e)

Setting up a fake website that looks like an official website

88.

Which of the following could increase the chances of blagging being successful?

a)

Making the victim feel sorry for you

b)

Complementing the victim

c)

Ignoring the victim

d)

Claiming to be an authority figure

e)

Offering the victim a reward for 'helping'

89.

What is this an example of?

a)

Phishing

b)

Pharming

c)

Baiting

d)

Pretexting

90.

Scamming someone into giving private/personal information to 'confirm their identity', pretending they need information to help them.

a)

Baiting

b)

Pretexting

c)

Quid pro quo

d)

Shoulder surfing

91.

Which technique uses emails or texts containing a link to a fake website to then steal your security or login details?

a)

Phishing

b)

Pharming

c)

Baiting

d)

Pretexting

92.

Stealing login information by watching someone else log in.

a)

Phishing

b)

Tailgating

c)

Shoulder surfing

d)

Quid pro quo

93.

An advantage of lossless compression is...

a)

All data is lost

b)

The file size stays the same

c)

All of the important data is kept

94.

The correct encoding of the letter C in this tree is...

a)

11

b)

10

c)

01

d)

00

95.

Huffman trees use the _______________ of each character to work out their encoding.

a)

Frequency

b)

Order in ASCII

c)

Number value

96.

How do you calculate the number of bits of a body of text in ASCII?

a)

Number of characters * 7

b)

Number of characters (including spaces) *7

c)

bits in Huffman * 7

d)

bits in Huffman / 7

97.
What do we call the smallest unit of data that can be represented in an image?
a)
Pixel
b)
Dot
c)
Colour
d)
Bit
98.
What can a virus do to your computer?
a)
Delete files
b)
Cause inappropriate adverts to appear
c)
Spy on what you are doing
d)
Steal your infotrmation
99.
How can you protect your computer against viruses?
a)
Put a lock on it.
b)
Install an anti-virus package, scan and delete files and update it.
100.
How can you protect your computer against worms?
a)
Install anti-virus software and regularly update it.
b)
Update your operating system regularly.
101.
What is adware?
a)
Causes adverts to appear
b)
Deletes files
102.
What is spyware?
a)
Causes adverts to appear on screen.
b)
Software that deletes your files
c)
Slows your pc down.
d)
Collects information from you and transfers it across the internet.

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