Question 1

Which function does not relate to the role of ROM in a computer system?

Accepted Answer

Holding currently running programs

Answer

Storing firmware

Answer

Holding bootstrap instructions

Answer

Being read-only

Question 2

Why is it important to have the BIOS stored in the ROM?

Accepted Answer

Because it needs to be permanently stored and not lost when the computer is powered off

Answer

Because it needs to be accessible to the user

Answer

Because it requires a large amount of storage space

Answer

Because it needs to be frequently updated

Question 3

What is the primary function of the fetch-execute cycle in a CPU?

Accepted Answer

To execute instructions

Answer

To manage memory

Answer

To control peripheral devices

Answer

To handle input and output

Question 4

What is the first step in the fetch-execute cycle of a CPU?

Accepted Answer

Fetching the instruction from memory

Answer

Executing the instruction

Answer

Storing the results of the instruction

Answer

Decoding the instruction

Question 5

In the fetch-execute cycle, what does the CPU do after it fetches an instruction?

Accepted Answer

It decodes the instruction

Answer

It sends the instruction to the RAM

Answer

It stores the instruction

Answer

It executes the instruction

Question 6

What is the primary purpose of an embedded system?

Accepted Answer

To perform a dedicated function or set of functions

Answer

To allow multiple users to work simultaneously

Answer

To replace the use of general purpose computers

Answer

To provide multi-functionality similar to a personal computer

Question 7

Which of the following best describes a characteristic of embedded systems?

Accepted Answer

They are highly specialized to deliver a specific function

Answer

They have unlimited memory capacity

Answer

They are designed to be operated by multiple users

Answer

They can run multiple operating systems simultaneously

Question 8

What is a typical feature of an embedded system?

Accepted Answer

They require less power than general purpose computers

Answer

They can easily be modified by the user

Answer

They contain several types of output and input devices

Answer

They use different programming languages for different tasks

Question 9

What is the result of a binary left shift on the binary number 1010?

Accepted Answer

10100

Answer

1001

Answer

101

Answer

1110

Question 10

Which of these is the result of a right shift on the binary number '1101'?

Accepted Answer

0110

Answer

1110

Answer

1111

Answer

1011

Question 11

How is an image represented in computer systems?

Accepted Answer

As a series of pixels represented in binary

Answer

As a series of decimal numbers

Answer

As a sequential list of logic gates

Answer

As a collection of hexadecimal values

Question 12

What does each pixel of an image stored in computer represent?

Accepted Answer

A specific color

Answer

A memory address

Answer

A volume size

Answer

A specific shape

Question 13

How is each pixel's color in an image represented in binary?

Accepted Answer

By the combination of binary codes for red, green, and blue

Answer

By storing the name of the color in binary

Answer

By using a single binary code for the whole pixel

Answer

By using ASCII codes

Question 14

How can sound be sampled and stored in digital form?

Accepted Answer

By converting sound waves into binary data

Answer

By converting sound waves into tangible objects

Answer

By converting sound waves into polygons

Answer

By converting sound waves into pixels

Question 15

What is the process of changing analogue signals into digital data called?

Accepted Answer

Digitisation

Answer

Modulation

Answer

Propagation

Answer

Digitalisation

Question 16

What is the concept of measuring the amplitude of a sound wave at regular intervals to create digital data called?

Accepted Answer

Sampling

Answer

Quantising

Answer

Converting

Answer

Relaying

Question 17

How many characters can be represented by a character set with 8 bits per character?

Accepted Answer

256

Answer

512

Answer

64

Answer

128

Question 18

Which character set uses 16 bits and can represent up to 65,536 characters?

Accepted Answer

Unicode

Answer

ISO-8859-1

Answer

EBCDIC

Answer

ASCII

Question 19

An ASCII (American Standard Code for Information Interchange) uses how many bits per character?

Accepted Answer

7

Answer

8

Answer

16

Answer

32

Question 20

Why is data compression necessary in computer science?

Accepted Answer

It saves storage space and improves data transmission speed

Answer

It helps to remove viruses

Answer

It allows data to be unencrypted

Answer

It increases the quality of the data

Question 21

Which of the following is not an advantage of data compression?

Accepted Answer

Improves the quality of data

Answer

Improves data transmission speed

Answer

Allows more data to be stored on a disk

Answer

Saves storage space

Question 22

What is a potential disadvantage of data compression?

Accepted Answer

It can result in lower quality files

Answer

It speeds up download time

Answer

It increases storage capacity

Answer

It makes files easier to find

Question 23

What is the purpose of virtual memory in a computer?

Accepted Answer

To act as a backup to the RAM when it runs out of space

Answer

To increase the processing speed of the CPU

Answer

To store files and applications permanently

Answer

To act as a temporary storage for the operating system

Question 24

When does a computer use virtual memory?

Accepted Answer

When the RAM is full

Answer

When the hard drive is full

Answer

When the BIOS is being updated

Answer

When the CPU is idle

Question 25

What is a potential downside of over-reliance on virtual memory in computing?

Accepted Answer

It can lead to slower system performance

Answer

It can lead to overheating of the system

Answer

It can drain battery life faster

Answer

It can cause data loss

Question 26

What is the equivalent of the denary number 35 in hexadecimal?

Accepted Answer

23

Answer

17

Answer

25

Answer

33

Question 27

What is the hexadecimal equivalent of the denary number 100?

Accepted Answer

64

Answer

44

Answer

100

Answer

80

Question 28

What is the denary equivalent of the hexadecimal number AF?

Accepted Answer

175

Answer

195

Answer

185

Answer

165

Question 29

In the context of Von Neumann architecture, what is the purpose of the Program Counter?

Accepted Answer

To hold the address of the next instruction to be executed

Answer

To hold the data that is being processed

Answer

To hold the address of the currently executing instruction

Answer

To store the result of calculations

Question 30

What is the role of the Memory Address Register (MAR) in Von Neumann architecture?

Accepted Answer

To hold the address of the memory location currently being accessed

Answer

To store the result of calculations

Answer

To hold the data that is currently being processed

Answer

To hold the current instruction being executed

Question 31

What is the Memory Data Register (MDR)'s function in the Von Neumann architecture?

Accepted Answer

To hold the data that is being read from or written to memory

Answer

To hold the results of the calculations

Answer

To store the current address being accessed in memory

Answer

To store the location of the next instruction to be executed

Question 32

Which of the following is an example of an embedded system?

Accepted Answer

Washing machine

Answer

Laptop

Answer

Desktop Computer

Answer

Smartphone

Question 33

Which of the following is NOT an example of an embedded system?

Accepted Answer

Desktop Computer

Answer

Digital Camera

Answer

Traffic Control System

Answer

SatNav

Question 34

Which of the following is an example of an embedded system in a car?

Accepted Answer

Airbag control system

Answer

Steering wheel

Answer

Car seats

Answer

Car radio

Question 35

How would you represent the denary whole number 23 in binary?

Accepted Answer

10111

Answer

11011

Answer

10011

Answer

11100

Question 36

Which denary whole number does the binary number 10010110 represent?

Accepted Answer

150

Answer

160

Answer

146

Answer

155

Question 37

How would you represent the denary whole number 37 in binary?

Accepted Answer

100101

Answer

101001

Answer

100110

Answer

101100

Question 38

What is the primary purpose of RAM in a computer system?

Accepted Answer

To temporarily store data and instructions for the processor

Answer

To cool the processor

Answer

To facilitate communication between internal components

Answer

To permanently store data and applications

Question 39

Why is RAM considered volatile?

Accepted Answer

Because it loses its contents when power is disconnected

Answer

Because it can permanently store data

Answer

Because it can quickly heat up

Answer

Because it changes its speed randomly

Question 40

What happens to the data in the RAM when a computer is shut down?

Accepted Answer

It is lost

Answer

It gets encrypted automatically

Answer

It is transferred to the hard drive

Answer

It is kept for future use

Question 41

Which type of network is best suited for communication within a city?

Accepted Answer

WAN

Answer

PAN

Answer

MAN

Answer

LAN

Question 42

What type of network typically connects computers in a single room or floor of a building?

Accepted Answer

LAN

Answer

PAN

Answer

WAN

Answer

MAN

Question 43

What type of network often connects large scale areas such as multiple cities or countries?

Accepted Answer

WAN

Answer

PAN

Answer

LAN

Answer

MAN

Question 44

Why is metadata important in database management systems?

Accepted Answer

It provides details about the data stored in the database

Answer

It stores the main data of the database

Answer

It prevents unauthorized access to the database

Answer

It adjusts the database speed

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