2025 Mock Revision

Multiple Choice

In the FDE Cycle

The binary representation of an instruction needs to be decoded before it can be run. This is the process the control unit uses to work out what the other components need to do.

• Fetch

• Decode

• Execute

• Store

Multiple Choice

In the FDE Cycle

Once the instruction is understood, the instruction will be executed. The control unit will tell the other components what they need to do in order for the instruction to work.

• Fetch

• Decode

• Execute

• Store

Multiple Choice

In the FDE Cycle

Instructions are loaded into memory (RAM) before the processor starts running the program.

• Fetch

• Decode

• Execute

• Store

Multiple Choice

The Fetch-Decode-Execute cycle runs continuously when the computer is turned on.

• True

• False

Multiple Choice

When something is loaded from memory, where is it first stored?

• The CIR

• The MAR

• The MDR

• The ALU

Multiple Choice

According to the von Neumann model, _______ are stored in memory.

• only data

• only programs

• data & programs

• neither data nor programs

Multiple Choice

Which register is being described?
Stores the results of the calculations done by the ALU

• MAR
• MDR
• Accumulator
• Program Counter

Multiple Choice

Which register is being described?
Holds the memory address about to be used by the CPU

• MAR
• MDR
• Accumulator
• Program Counter

Multiple Choice

Which register is being described?
Holds the data / instructions that have been fetched from memory

• MAR
• MDR
• Accumulator
• Program Counter

Multiple Choice

Which register is being described?
Holds the memory address of the instruction for each cycle

• MAR
• MDR
• Accumulator
• Program Counter

Multiple Choice

What are registers used for?

• To check that students are in school.
• To temporarily hold bits of data needed by the CPU.
• To make sure that the CPU runs properly.
• To make the CPU faster.

Multiple Choice

What are the four registers in the CPU called?

• PC, MDR, Accumulator, MAR

• Cache, ALU, Control Unit

• ALU, PC, CU, Accumulator

• MAR, MDR, CAR, ALU

Multiple Choice

Which of the following is an example of 'main memory'.

• Hard Drive
• USB Drive
• RAM
• ROM

Multiple Select

Which of the following are embedded systems?

• Laptop

• Tablet

• PC

• Washing Machine

Multiple Choice

Which one is a characteristic of an embedded system

• Usually has a complex operating system

• Used for specialised tasks

• A desktop PC is a good example

• Can perform custom tasks

Multiple Choice

Which one is a characteristic of an embedded system?

• Has many cores

• Easy to update

• A single microprocessor including RAM,ROM and a CPU

• Anyone can program

Fill in the Blank

A ___ consists of 8 bits.

Fill in the Blank

Convert the binary number 0001 1101 to denary

Fill in the Blank

Convert the denary number 47 to binary

Multiple Choice

What is the value of the hexadecimal number 7C in decimal (denary)?

• 124

• 112

• 28

• 192

Multiple Choice

Which of the following hexadecimal numbers is equal to 250 in decimal?

• FA

• C0

• 2B

• 11

Multiple Choice

Which of the following denary numbers is correctly converted to hexadecimal as 5B?

• 91

• 19

• 172

• 207

Multiple Choice

When binary addition results in a number larger than 8-bits (or the amount of space allocated to it), there is an error. It is called an..

• Addition error

• Overflow error

• 9-bit error

• Actuary error

Multiple Choice

A binary shift to the left means that the number is...

• Added

• Multiplied

• Divided

• Subtracted

Multiple Choice

A binary shift to the right means that the number is...

• Added

• Multiplied

• Divided

• Subtracted

Multiple Choice

What is the purpose of the DNS?

• Turns human friendly domain names into IP addresses

• Turns human friendly domain names into MAC addresses

• Turns IP addresses into domain names

• Turns MAC addresses into IP addresses

Fill in the Blank

The frequency at which samples are taken is called the ___ rate.

Fill in the Blank

What is the name of the process of capturing sound and converting it into digital form?

Multiple Choice

What is sampling?

• The number of bits used to represent the sound

• Turning a microphone on and off to only record sound at certain times

• Taking measurements of a wave at regular intervals

• Combining two sound waves into one

Multiple Choice

What is sample rate?

• The number of bits used for a sample

• How many times a sound wave goes up and down

• How fast a sound wave moves

• How many samples you take each second

Multiple Choice

What is sample rate measured in?

• bits

• Hertz

• Kbps

• Decibels

Multiple Choice

If the sample rate and sample resolution are increased, what happens to the sound file?

• Quality goes up. Size of the file goes up.

• Quality goes down. Size of the file goes down.

• Quality goes down. Size of the file goes up.

• Quality goes up. Size of the file goes down.

Multiple Choice

Makes the file smaller by deleting parts of the file permanently (forever)

• Lossy Compression
• Lossless Compression

Multiple Choice

Makes the file smaller by giving repeated patterns/colours a specific code

• Lossy Compression
• Lossless Compression

Multiple Choice

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

• Images

• Music

• Videos

• Text

Multiple Choice

Compression looks for _______ data

• Unnecessary

• Repeated

Multiple Choice

What network has the server placed in the centre and the devices around it?

• Ring
• Bus
• Star
• Mesh

Multiple Choice

In a star network

• Each device is connected to a switch or hub
• Each device connects to each other
• Each device is connected in a line
• Each device is connected to a terminal

Multiple Choice

A star topology will cause a network failure if...

• If the hub/switch fails

• If one of the many of the computers fail

• If the printer fails

Multiple Choice

Which of the following best describes the role of a Domain Name Server (DNS)?

• It translates domain names into IP addresses so users can access websites.

• It stores all the content of websites.

• It provides internet access to users.

• It encrypts data sent over the internet.

Multiple Choice

What does DNS stand for?

• Domain Name System

• Domain Nomenclature Service

• Dynamic Naming Service

• Do Not Send

Open Ended

Compare the advantages and disadvantages of proprietary software and open-source software.

Multiple Choice

What is meant by 'open source' software?

• Software owned by an organisation, you may need to buy a license for
• Freely available, constantly upgraded by users.  No fee. 

Multiple Choice

What is meant by 'proprietary' software?

• Software owned by an organisation, you may need to buy a license for.
• Freely available, constantly upgraded by users.  No fee. 

Multiple Choice

Which of the following is an advantage of 'open source' software?

• You can edit the source code to customise it
• You need to be an expert to edit code
• You have to pay
• Can sometimes be too generic for specialist purposes

Multiple Choice

Which of the following is an advantage of 'open source' software?

• The software must be paid for.
• It’s often free.
• The produces provide regular updates.
• Not as customisable

Multiple Choice

Which of the following is a disadvantage of 'open source' software?

• High quality software with lots of features
• Not as customisable
• May not have been tested as much as proprietary software, so might have bugs.
• You can edit the source code to customise it

Multiple Choice

Which of the following is a disadvantage of 'open source' software?

• Can sometimes be too generic for specialist purposes
• It’s often free!
• Help and support provided
• You need to be an expert to edit code

Multiple Choice

Which of the following is an advantage of 'proprietary' software?

• It is usually free.
• Thoroughly tested because people are paying to use it.
• Not as customisable
• Can sometimes be too generic for specialist purposes

Multiple Choice

Which of the following is an advantage of 'proprietary' software?

• Regular updates provided by professionals
• A community of enthusiasts keep updating it
• Not as customisable
• Can sometimes be too generic for specialist purposes

Multiple Choice

Which of the following is a disadvantage of 'proprietary' software?

• You need to be an expert to edit code
• You have to pay for this type of software
• Its often free
• You can edit the source code to customise it

Multiple Choice

Which of the following is a disadvantage of 'proprietary' software?

• Can sometimes be too generic for specialist purposes
• It is usually free
• You need to be an expert to edit code
• Not as much support available or you may need to pay for it

Multiple Choice

Which of the following are considered ethical or cultural issues related to technology?

• Access to inappropriate content

• Increase in e-waste

• How to keep personal data safe

• The ability of websites to track users