WorksheetsIGCSE Computer Science Unit 3 Hardware Quiz
Total questions: 40
Worksheet time: 20mins
Which memory is directly accessed by the CPU?
The brain
Secondary storage
RAM
Blu-ray
What happens first in the Fetch-Execute cycle?
Instruction is decoded
PC is incremented
Address copied to MAR
Instruction placed in CIR
Which input device converts sound into electric signals?
Scanner
Microphone
Keyboard
Mouse
Which IP version uses 128-bit addresses?
IPv2
IPv4
IPv6
IPv1
What does a laser printer use to produce images?
Liquid ink
Static electricity
PLA Filament
Digital pixels
What is the purpose of the system clock?
Increase RAM
Store data temporarily
Produce timing signals
Execute instructions
What kind of memory is ROM?
Volatile
Permanent
DDR
Cache
What does OCR software do?
Converts text to image
Scans 3D models
Reads barcodes
Converts image to text
Which register holds the instruction currently being executed?
MDR
MAR
CIR
ACC
Which register holds the address of the next instruction?
MAR
MDR
PC
CIR
What does the ACC do in the CPU?
Stores address
Performs logic
Holds temporary data
Controls timing
Which component carries out arithmetic and logic operations in the CPU?
Control Unit
Accumulator
ALU
Register
What does DHCP do?
Assigns IP addresses
Manages hardware
Controls voltage
Starts BIOS
What is the advantage of a wider data bus?
Faster CPU clock
Faster data transfer
Lower voltage
More memory
Which storage device uses magnetic surfaces to store data?
SSD
RAM
ROM
HDD
What is one benefit of SSD over HDD?
Higher capacity
Slower access
Cooler operation
Louder noise
Which storage device uses NAND chips?
Blu-ray
SSD
HDD
CD
What is overclocking?
Reducing CPU speed
Adding RAM
Using higher clock speed
Disabling CPU cores
What is the function of the Immediate Access Store?
Store output
Store current instruction
Store all programs
Store instructions to be processed
Which sensor detects temperature?
Gas sensor
Humidity sensor
Thermal sensor
Temperature sensor
Which technology uses micromirrors to project images?
LCD projector
LED screen
Laser printer
DLP projector
Which sensor detects the presence of gas?
Flow sensor
Gas sensor
IR sensor
Level sensor
Which monitor uses fluorescent tubes for backlighting?
AMOLED
LCD with LED backlight
LCD with CCFL
OLED
What component melts toner onto paper in a laser printer?
Drum
Laser
Cartridge
Fuser
Which device uses powdered resin or filament for printing?
Laser printer
3D printer
Inkjet printer
Cutter
What type of embedded system device updates itself via Wi-Fi?
Static
ROM
Programmable
Volatile
Which is a common use of an embedded system?
Word processing
3D Modelling
Vending machine
Spreadsheet
What is the purpose of cache memory?
Store all OS
Store frequently used data
Act as ROM
Save battery
What happens when RAM is full?
System crashes
ROM is used
Cache increases
Virtual memory is used
Which bus is unidirectional?
Address bus
Data bus
Control bus
System bus
Which register holds the data from the memory address register?
CIR
PC
MDR
ACC
What does the control unit do?
Store instructions
Control CPU and devices
Perform calculations
Store results
What does a NIC allow a device to do?
Print documents
Connect to a network
Increase speed
Store backups
Which address is permanent and unique to a device?
MAC
IP
Router
Subnet
What is a dynamic IP address?
Manual and fixed
Automatically assigned
Only for phones
Always public
What is the role of a router in a network?
Store files
Send emails
Direct data packets
Create websites
What is the function of the PC in the fetch-execute cycle?
Holds current instruction
Holds next address
Stores data
Processes logic
What kind of device is a scanner?
Output
Storage
Input
Processing
What does an inkjet printer spray to produce text or images?
Dry toner
Liquid ink
Laser beam
Wax
What is one disadvantage of embedded systems?
Small in size
Difficult to upgrade
Low cost
Fast performance
