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WorksheetsComputer Fundamentals Revision
Total questions: 60
Worksheet time: 11mins
The _______ is the metal and plastic box that contains the main components of the computer, including the motherboard, central processing unit (CPU), and power supply.
Monitor
System Unit
Keyboard
Mouse
The ______ is where your software, documents, and other files are stored. It long-term storage, which means the data is still saved even if you turn the computer off or unplug it.
RAM
USB
Hard Drive
Storage Drive
An _____________ is the most important software that runs on a computer. It manages the computer's memory and processes, as well as all of its software and hardware.
Banana
Hardware
Software
Operating System
Devices that are used to store data
Input Devices
Output Devices
Processing Devices
Storage Devices
Devices that are used to give instructions to the computer
Input Devices
Output Devices
Processing Devices
Storage Devices
Type of software that helps the user to perform certain type of work
Application Software
System Software
Both application & system software
None of these
Type of software that controls the working of your computer system
Application Software
System Software
Both application & system software
None of these
Information is lost when power is switched off... this means
Non-volatile
Volatile
Permanent
ROM
This memory component stores the data of the operating system and programs that are currently running, for access by the CPU.
ROM
Flash Memory
RAM
Which type of memory is non-volatile and retains data even when the power is turned off?
RAM
Flash Memory
ROM
Software written to meet the need specific need of a company is_______________
special purpose software
integrated software
general purpose software
custom written software
What is the name given to software that can be used by many people for a wide range of tasks?
Custom-written
Integrated
General-purpose
Special-purpose
Microwaves, washing machine, medical equipment, cameras, toys and airplanes are some of the appliances/ machines which uses the list above.
Personal Digital Assistants
Embedded Computers
Micro Computers
Wearable Computers
A _____ device is one that is attached to a computer to expand its ability to perform more.
Input
Output
Storage
Peripheral
They normally interact with the system via user interface provided by the application software.
a) Programmers
b) Developers
c) Users
d) Testers
Which of the following is not an advantage of local storage over cloud storage
You do not have full control of your data
Less susceptible to hacking
Its cheap to store your data
No need for Internet connection
What is a computer network?
A computer network is a physical barrier that prevents devices from connecting to each other.
A computer network is a set of interconnected devices that can communicate and share resources with each other.
A computer network is a group of unrelated devices that cannot communicate with each other.
A computer network is a type of software used for gaming purposes only.
What are the main hardware components of a computer?
Graphics card, sound card, network card
CPU, RAM, storage devices, motherboard, power supply, input/output devices
Keyboard, mouse, monitor, printer
Operating system, software applications, antivirus program
Which type of program acts as an intermediary between a user of a computer and the computer hardware?
Operating System
User Thread
Application program
Utility software
Which one of the following is not a function of the control unit?
Fetch instructions from memory
Decode instructions
Process instructions
Fetch data for required instructions
The ALU processes data and stores it in:
the main memory.
the instruction register.
the control unit.
the program counter.
Which of these is a function of the control unit?
Fetch and decode instructions from memory
Store data for processing
Perform logical operations
Perform arithmetic operations
The CPU fetches instructions from.... and executes those instructions.
Memory
ALU
ROM
Input Device
The control unit in the CPU does what?
Sets the speed of the operations
controls the input and output of data so it goes to the right place
Controls and monitors the input and output devices
Controls the ALU
A: 3 GHz Quad Core CPU
B: 3 GHz Duel Core CPU
Tick all that could be ways of improving CPU performance
Increase Clock Speed
Increase Hard Disk Size
Increase Cache Size
Add more Cores
Add more bandwidth
Which of the following are factors which affect CPU performance?
(Tick all that apply)
Cache Size
Number of Cores
Clock Speed
Program Counter Capacity
Application Size
Which of the following components ARE part of the CPU?
Input Devices
Accumulator
Main Memory
Output Devices
Arithmetic and Logic Unit
Used to store the results of calculations while they are in progress
Arithmetic and Logic Unit
Program Counter
Current Instruction Register
Accumulator
Memory Data Register
Holds the data that is being transferred to or from memory.
MAR (Memory Address Register)
MDR (Memory Data Register)
CIR (Current Instruction Register)
PC (Program Counter)
ALU (Arithmetic and Logic Unit)
Performs calculations (i.e. addition, division, multiplication, subtraction)
MAR (Memory Address Register)
MDR (Memory Data Register)
CIR (Current Instruction Register)
PC (Program Counter)
ALU (Arithmetic and Logic Unit)
Which of the following are CPU registers? Tick all that apply.
MAR
MDR
PC (Program Counter)
ALU (Arithmetic and Logic Unit)
Accumulator
Either stores the address from which data will be fetched from the CPU, or the address to which data will be sent and stored.
MAR (Memory Address Register)
MDR (Memory Data Register)
CIR (Current Instruction Register)
PC (Program Counter)
ALU (Arithmetic and Logic Unit)
This register contains the address (location) of the instruction being executed at the current time
MAR (Memory Address Register)
MDR (Memory Data Register)
CIR (Current Instruction Register)
PC (Program Counter)
ALU (Arithmetic and Logic Unit)
What is the function of the Program Counter register?
It synchronizes the operations of the CPU
It holds the address of the next instruction to be executed
It stores the data fetched from memory
It controls how data moves around the CPU
What does the Memory Address Register (MAR) hold?
The data to be written back to memory
The address in memory where data needs to be read from or written to
The next instruction to be executed
Frequently used instructions and data
What is stored in the Memory Data Register (MDR)?
The address in memory for data or instruction access
The address of the next instruction
Either the data or an instruction fetched from memory
Temporary values for CPU operations
What is the function of the Program Counter register?
It synchronizes the operations of the CPU
It holds the address of the next instruction to be executed
It stores the data fetched from memory
It controls how data moves around the CPU
What does the clock component do in a CPU?
Generates pulses at a constant rate to synchronize components
Stores the address where data needs to be read from or written to
Carries out calculations and logical decisions
Controls how data moves around the CPU
What is the purpose of cache in a CPU?
To synchronize the operations of the CPU
To store the address of the next instruction
To provide fast access to frequently used data and instructions
To transmit data and instructions from one component to another
What role does the Control Unit play within the CPU?
It performs calculations and logical decisions
It stores frequently used instructions and data
It sends signals to control how data moves around the CPU
It holds the address of the next instruction to be executed
What is the primary function of the Arithmetic Logic Unit (ALU) in a CPU?
To synchronize related components by generating pulses
To provide fast access to frequently used instructions and data
To carry out calculations and make logical decisions
To control how data moves around the CPU
What is the purpose of the Accumulator in a CPU?
To synchronize the operations of the CPU
To store temporary values before being written to or from memory
To store the address for data or instruction access
To hold the address of the next instruction
What is the main function of the CPU?
To carry out processing of the data.
To help with playing games.
To fetch instructions from memory, decode them and execute the instructions.
To heat up the computer.
Holds the instruction that is being processed (and translated) or executed
MAR (Memory Address Register)
MDR (Memory Data Register)
CIR (Current Instruction Register)
PC (Program Counter)
ALU (Arithmetic and Logic Unit)
Tick all that could be ways of improving CPU performance
Increase Clock Speed
Increase Hard Disk Size
Increase Data Bus Width
Add more Cores
Add more programs
