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AS level_Quiz

Total questions: 65

Worksheet time: 44mins

Name
Class
Date
1.

Definition of encryption

a)

Using an algorithm and a key to convert message data into a form that is not understandable without that key.

b)

A method of trying to find the plain text from the cipher text without the decryption key.

c)

Process of turning legible text into gobbledygook.

d)

Using an algorithm and a key to convert encrypted message data into its plain text equivalent.

2.

Select all the Low-level programming code ...

a)
b)
c)
d)
3.

Select the true statements about operating systems:

a)

A computer can only have one OS

b)

The OS manages memory, storage, security, printing and other useful functions of the system

c)

The OS provides a user interface

d)

All OSes allow you to use multiple programs at once

4.

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

5.

What is the point of binary?

a)

It represents how computers interpret electrical signals

b)

Because we like to make you do extra math

c)

It is fun

d)

Because it describes star systems

6.

How is our number system different from the binary system?

a)

Our number system is base 5; the binary system is base 3

b)

Our number system is base 10; the binary system is base 2

c)

Our number system is base 10; the binary system is base 1

d)

Our number system is base 100; the binary system is base 2

7.

What is the device shown in the picture?

a)

INPUT

b)

OUTPUT

c)

MOUSE

d)

KEYBOARD

8.

What does CPU stand for?

a)

Computational Unit

b)

Computer Processing Unit

c)

Central Processing Unit

d)

Command Processing Unit

9.

The performance of which three components is most important in a Gaming computer?

a)

CPU, RAM, Graphics Card

b)

Hard Disk Drive, BIOS, Monitor

c)

RAM, Hard Disk Drive, CPU

d)

Motherboard, USB Socket,

10.

Which of the following is correct?

a)

hardware is all ports and button on a computer

b)

hardware is any part of your desktop

c)

hardware is any part of your computer that has a physical structure.

d)

hardware is the processing part of your computer

11.

What do you call the item in the picture?

a)

motherboard

b)

processor

c)

fatherboard

d)

RAM

12.

Which of the following is a RAM?

a)
b)
c)
d)
13.

What does a RAM do?

a)

process graphic

b)

store all your files

c)

to process your graphic

d)

temporary storage for your software

14.

Which of the following is NOT a storage device?

a)
b)
c)
d)
15.

What make computer a computer?

a)

the ability to take information

b)

the ability to compute information

c)

the ability to output information

d)

the ability to keep information

16.

Which of the following is NOT consider as a computer?

a)

Digital rice cooker

b)

Smart phone

c)

Analog clock

d)

Smart watch

17.

There are 4 tasks that define a computer, they are input, ___________, ____________ and output

a)

storing, processing

b)

computing, processing

c)

storing, saving

d)

saving, searching

18.
What is an example of an output device?
a)
Mouse
b)
Microphone
c)
Speakers
d)
DVD
19.
Firefox, Opera, Chrome, Safari and Explorer are types of what?
a)
Wildlife Charities
b)
Folder
c)
Web Browser
d)
Different colours of the new Vauxhall Vectra
20.
What does HTML stand for?
a)
Hyper Text Mark up Lingo
b)
Hyper Text Mark Up Language
c)
Hyper Total Managed Language 
d)
Handy Texting Management Level
21.
Which of these is the 'brain' of the computer?
a)
RAM
b)
CPU
c)
Motherboard
d)
Hard drive
22.

instructions that can be stored and run by hardware

a)

Software

b)

Bug

c)

Debug

d)

Computer

23.
Which of the following is an IP address?
a)
www.google.com
b)
192.168.2.25
c)
1024.2048.64.512.256
d)
A5:D4:23:56:FF:A4
24.

What is a bit (in computer science knowledge)?

a)

Smallest unit of data that a computer uses to process and store information

b)

a small piece of something

c)

a set of actions or ideas associated with a specific group or activity

d)

A bit is a group of bytes

25.

How many bits does a byte hold?

a)

2

b)

4

c)

6

d)

8

e)

10

26.

Computers can only understand 0s and 1s

a)

True

b)

False

27.

How would you write the number 2 in binary code?

a)

0100

b)

0000

c)

0001

d)

0010

28.

What would the binary number: 01101, be in decimal?

a)

1101

b)

4

c)

13

d)

16

29.

Information or signals entered into the computer system is called:

a)

Output

b)

Variables

c)

Input

d)

Words

30.

A component of the CPU that performs arithmetic and logic calculations.

a)

ALU

b)

Control Unit

c)

RAM

d)

Register

31.

The component of the CPU that manages instructions

a)

ALU

b)

RAM

c)

Control Unit

d)

Register

32.

To run a computer program.

a)

Fetch

b)

Decode

c)

Execute

33.

A register within the CPU that records the current instruction being executed.

a)

general register

b)

instruction register

c)

program counter

d)

RAM

34.

Also called object-code, this is low-level code that represents how computer hardware and CPUs understand instructions. It is represented by either binary or hexadecimal numbers.

a)

Machine Code

b)

Syntax

c)

Assembly Language

d)

Library

35.

The section of high speed memory within the CPU that stores data to be processed.

a)

RAM

b)

Register

c)

Virtual Memory

d)

Cache

36.

Non-volatile memory that can be read from and written to. It is suitable for secondary storage.

a)

Solid State

b)

Magnetic

c)

Optical

37.

A description of the processing architecture that all CPUs use. John von Neumann invented the processor architecture which stores a program in memory as instructions and executes them sequentially using the ALU, control unit and registers. This is known as the stored program concept.

a)

Von Neumann architecture

b)

Stored program concept

c)

CPU

d)

Processor

38.
Convert 11111111 to decimal
a)
255
b)
245
c)
235
d)
225
39.
Which logic gate is this?
a)
AND
b)
NOR
c)
NOT
d)
OR
40.
Which logic gate is this?
a)
AND
b)
OR
c)
XOR
d)
NOT
41.
Which logic gate is this?
a)
XOR
b)
NOR
c)
NAND
d)
NOT
42.
Which logic gate is this?
a)
OR
b)
NOR
c)
XOR
d)
NXOR
43.
Which logic gate is this?
a)
NAND
b)
NOR
c)
XOR
d)
NXOR
44.
Which logic gate is this?
a)
NOR
b)
XOR
c)
NXOR
d)
NAND
45.
Which logic gate is this?
a)
NXOR
b)
NAND
c)
XOR
d)
NOR
46.
Which truth table is this?
a)
NOT
b)
AND
c)
OR
d)
NAND
47.
Which truth table is this?
a)
AND
b)
OR
c)
NOT
d)
NOR
48.
Which truth table is this?
a)
OR
b)
NOR
c)
XOR
d)
AND
49.
Which truth table is this?
a)
XOR
b)
NAND
c)
NOR
d)
NOT
50.
Which truth table is this?
a)
NAND
b)
AND
c)
OR
d)
NOR
51.

How many possible input combinations are there with 3 gates?

a)

7

b)

8

c)

9

d)

10

52.

A 2GHz Processor can process:

a)

2,000,000 instructions per second

b)

2,000,000,000 instructions per second

c)

20,000,000 instructions per second

d)

200,000 instructions per second

53.

Which of these clock speeds is the fastest:

a)

10 Mhz

b)

1 Mhz

c)

1 Ghz

d)

100 Mhz

54.

Which of the factors below can significantly impact the performance of a CPU? (choose as many as are appropriate)

a)

Clock Speed

b)

Cache Size

c)

Number of cores

d)

SSD (Solid State Drive)

55.
What is the purpose of the CPU?
a)
To process all the data and instructions.
b)
To turn the computer on.
c)
To create PowerPoint presentations.
d)
To provide power to the computer.
56.
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.
57.
What are the two other parts of the CPU that you learned?
a)
RAM & ROM
b)
Hard Drive & Motherboard
c)
The ALU and Cache
58.
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.
59.
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.
60.
What is the program counters job?
a)
To count the programs
b)
It contains the memory address of the next instruction to be loaded
c)
It stores instructions
d)
It carries out the calculations
61.
Which of the following is a job of the control unit?
a)
To start up the computer
b)
To manage the fetch decode execute cycle
c)
To create presentations
d)
To carry out calcul
62.
Which of the following is an example of 'main memory'.
a)
Hard Drive
b)
USB Drive
c)
RAM
d)
ROM
63.
Which of the following CPU's will have a better better performance:
A: 3 GHz Quad Core CPU
B: 3 GHz Duel Core CPU 
a)
A
b)
B
64.
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
65.
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

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