WorksheetsComputer Systems Test
Total questions: 66
Worksheet time: 33mins
What does CPU stand for?
Central Processing Unit
Central Performance Unit
Computer Processing Unit
Central Programming Unit
What is the role of the CPU in a computer?
To display graphics
To store data permanently
To execute all instructions and calculations
To manage the computer's power supply
John is working on his computer. Which of the following activities involves the CPU?
Checking emails
Plugging in a USB drive
Drawing power from an outlet
Connecting to a wireless network
How does the CPU process data?
In a continuous stream
In cycles
In random order
Only when the computer is turned off
What cycle does the CPU operate by repeating over and over again?
Input-Output Cycle
Compile-Run Cycle
Fetch-Decode-Execute Cycle
Read-Write Cycle
What is the first step in the Fetch-Decode-Execute cycle?
Execute
Decode
Fetch
Save
During which step of the Fetch-Decode-Execute cycle does the CPU work out what the instruction is?
Fetch
Execute
Decode
Load
What happens during the Execute step of the Fetch-Decode-Execute cycle?
The instruction is brought to the CPU from memory.
The CPU works out what the instruction is.
The instruction is carried out.
The instruction is saved to memory.
Which of the following is NOT one of the key components of a CPU?
The Control Unit
The Clock
CPU Memory
The Power Supply
What is the term used to collectively refer to the components of a CPU?
A bundle
A core
A chip
A package
What is the role of the Control Unit in the CPU?
It performs arithmetic operations.
It coordinates all of the other components in the CPU.
It stores data for quick access.
It enhances the graphics performance.
What does the Control Unit do with the instructions and data fetched from memory?
It transmits them to external devices.
It stores them for future use.
It decodes them.
It encrypts them for security.
After the Control Unit decodes instructions, what happens next in the CPU?
The instructions are sent back to memory.
The instructions are deleted.
Other components in the CPU are told how to execute these instructions.
The instructions are converted into analog signals.
Can the Control Unit issue instructions to devices outside of the CPU?
No, it can only manage internal CPU components.
Yes, but only to storage devices.
Yes, it can issue instructions to other connected devices.
No, it can only decode instructions and cannot issue them.
What is the ALU?
Arithmetic Logic Unit
Algorithmic Logic Unit
Arithmetic Linear Unit
Advanced Logic Unit
What types of operations does the ALU perform?
Graphical operations
Arithmetic and logical operations
Data storage operations
Input/output management
Which of the following is an example of an arithmetic operation performed by the ALU?
Data comparison
Data encryption
Addition
Data retrieval
What is an example of a logical operation that the ALU can perform?
Multiplication
Data comparison
Data storage
Data transmission
What are the two types of high-speed memory located directly on the CPU chip?
ROM & RAM
Registers & Hard Drive
Registers & Cache
Cache & SSD
Why is only a small amount of CPU's high-speed memory used?
Because it is low in capacity
Because it is less efficient than RAM
Because it is very expensive
Because it is slower than RAM
How does the CPU's own high-speed memory compare to RAM in terms of data fetching speed?
It is about the same speed as RAM
It is slower than RAM
It is much quicker than RAM
It does not fetch data
What is a core in the context of a CPU?
A single unit of computational power in a computer.
A combination of a Control Unit, an Arithmetic Logic unit, and CPU Memory.
The main circuit board of a computer.
A type of computer memory.
What is the benefit of having multiple cores in a CPU?
It reduces the physical size of the CPU.
It allows the CPU to execute more instructions simultaneously.
It increases the storage capacity of the CPU.
It enhances the graphical performance of the computer.
What does "EG Quad-Core processors have 4 cores on the chip" imply?
All processors have exactly 4 cores.
A Quad-Core processor is an example of a CPU with 4 cores.
Quad-Core processors are the fastest type of CPU available.
The term "Quad-Core" refers to the CPU's memory capacity.
For a CPU to run more quickly with multiple cores, what is required?
The software must support it.
A larger CPU chip.
Additional external memory.
A single-core architecture.
What does the Clock in a CPU control?
The power supply to the CPU
The timing of the whole CPU
The storage capacity of the CPU
The color display on the monitor
How does the Clock synchronize the CPU cores?
By cooling down the cores
By sending steady signals to synchronize when instructions are executed
By increasing the voltage to the cores
By reducing the memory usage
What is the unit of measurement for clock speed?
Volts
Watts
Hertz
Amps
How many hertz are there in one kilohertz (kHz)?
10 hertz
100 hertz
1,000 hertz
10,000 hertz
What is the relationship between clock speed and the execution of CPU instructions?
The slower the clock speed, the quicker instructions are executed.
Clock speed has no impact on the execution of instructions.
The faster the clock speed, the quicker instructions are executed.
Clock speed only affects the temperature of the CPU, not the execution speed.
How is clock speed measured?
Decibels
Volts
Hertz
Watts
What does 1 Hz in terms of clock speed equate to?
1 instruction per minute
100 instructions per second
1 instruction per second
10 instructions per second
How many instructions per second does a 3 kHz clock speed execute?
300 instructions per second
30 instructions per second
3000 instructions per second
30000 instructions per second
Where is CPU memory located?
On the motherboard
Inside the hard drive
On the CPU
Within the power supply unit
What is the benefit of having more CPU memory available?
It increases the CPU temperature for better performance
It allows more instructions to be stored on the CPU, reducing data transfer speeds
It enhances the graphics processing capabilities
It increases the overall weight of the CPU
Why is CPU memory considered very expensive?
Because it is made of rare materials
Because it requires a lot of electricity to function
Because it is very large in size
Because it is very expensive
What type of data is stored in CPU memory?
Data that is rarely used by the CPU
Data that is frequently used by the CPU
Data that is never used by the CPU
Data that is only used once by the CPU
How many processing units does a dual-core CPU have?
1
2
4
8
What is required for a multi-core processor to work more efficiently compared to a single-core processor?
The software must be designed for multi-core processing.
The processor must be overclocked.
The computer must have more RAM.
The processor must have a higher clock speed.
What is the main characteristic of memory in computing as opposed to storage?
Memory is non-volatile and retains data without power.
Memory is used to store data and programs that are not currently in use.
Memory is volatile and can only hold data when the computer has power.
Memory has larger capacity than storage.
Which of the following is an example of memory?
Hard Drives
USB sticks
CDs
RAM
What type of storage is used to hold data and programs that are not currently in use?
Volatile storage
Temporary storage
Non-volatile storage
Immediate storage
Which of the following is an example of non-volatile storage?
CPU memory
ROM
RAM
Cache memory
What does a storage device do?
It only reads data.
It is used to read/write the data.
It generates data.
It repairs data.
What is storage media?
A device that connects to the computer.
The data that is being used by the computer.
What the data is stored on.
A type of computer memory.
Which technology does magnetic storage use?
Uses lasers to read/write data.
Uses magnetic technologies to read/write data.
Uses electrical impulses to store data.
Uses specialized logic circuits to store data.
What does optical storage use to read/write data?
Magnetic fields.
Electrical impulses.
Lasers.
Logic circuits.
What is characteristic of solid-state storage?
It uses magnetic technologies to read/write data.
It uses electrical impulses to store data.
It uses lasers to read/write data.
It uses specialized logic circuits to store data.
What technology does solid-state storage use to store data?
Magnetic tape technology
Optical disc technology
Flash memory technology
Mechanical disk technology
Which of the following is NOT an example of solid-state storage?
Solid-state Drives
USB flash drives
SD/XD memory cards
DVD-ROM
What is one of the advantages of solid-state storage?
Low capacity
Prone to physical damage
Very robust
Slow read/write speeds
What is a disadvantage of solid-state storage?
High capacity
Relatively inexpensive
Limited write cycles
Extremely fast read/write speeds
What technology does magnetic storage use to represent binary data?
Uses electric signals
Uses optical recognition
Uses magnetic technology to polarise the storage media
Uses physical impressions on the media
Which of the following is NOT an example of magnetic storage?
Hard Disk Drives
Magnetic tape
Solid State Drive
Floppy disk
What is considered an advantage of magnetic storage devices?
High capacity
High read/write speeds
No moving parts
Resistance to magnetic fields
What is a disadvantage of magnetic storage devices?
Low capacity
Relatively slow read/write speeds
High cost
Durability against physical shocks
What is the function of the drive spindle in a hard disk drive?
Reads/writes data to/from the disk
Controls the read/write arm
Supports and rotates the platters
Stores the data
What component of a hard disk drive is responsible for reading and writing data to and from the disk?
Drive spindle
Actuator
Magnetic platters
Read/write head
What is the storage medium of a hard disk drive?
Actuator
Drive spindle
Magnetic platters
Read/write head
What does the actuator in a hard disk drive do?
Supports and rotates the platters
Reads/writes data to/from the disk
Controls the read/write arm
Stores the data
How fast do the platters in a hard disk drive typically spin?
5,000 rpm
10,000 rpm
15,000 rpm
20,000 rpm
What sits on either side of the platter in a hard disk drive to read or write data?
Motor
Actuator arm
Read/write head
Spindle
Into what are platters on a hard disk drive divided?
Tracks
Clusters
Sectors
Bytes
What are the circles called on which data is arranged in a hard disk drive?
Sectors
Clusters
Tracks
Bytes
How is data read or written on a hard disk drive?
By magnetizing a block to represent 1 or 0
By using an electrical charge to represent 1 or 0
By using light to encode data
By changing the color of the sector
The read/write head of a hard disk drive is aligned with the correct track and reads/writes how many blocks at a time as it passes the head?
One block
Two blocks
Four blocks
Eight blocks
