WorksheetsYear 9 GCSE 1.1 End of Unit ALL Questions.
Total questions: 66
Worksheet time: 50mins
Name
Class
Date
1.
How does having more CPU cores affect performance?
a)
It allows multiple instructions to be processed simultaneously
b)
It disables older cores to improve energy efficiency and prevent overheating
c)
It enables the computer to automatically update itself without user interaction
d)
It guarantees that all software will run at twice the speed without exception
2.
What are instructions stored on in embedded systems?
a)
ROM
b)
Hard drives with spinning disks
c)
RAM cache accessed over a network
d)
GPU-based system for persistent storage
3.
What are registers in the CPU?
a)
Tiny, fast memory locations with specific purposes
b)
Large capacity memory slots that can be upgraded to store more user data
c)
External chips that connect to USB ports to improve processing power
d)
Cloud-based memory units that synchronise automatically across multiple devices
4.
What are the three basic functions of a computer?
a)
Input, Process, Output
b)
Store, Print, Upload files using external devices and applications
c)
Save, Copy, Paste data across different folders and locations
d)
Type, Click, Drag items using input peripherals like mouse and keyboard
5.
What are the two critical components inside a typical desktop computer?
a)
Memory and central processing unit (CPU)
b)
Power supply unit that connects all devices and the motherboard with integrated circuits
c)
Monitor and keyboard used for user interaction and visual output
d)
Hard drive and graphics card used for storage and image rendering
6.
What could executing an instruction involve?
a)
Getting data from memory, doing a calculation, or saving the result
b)
Sending an email with attached images and files through an email client
c)
Turning off the computer using the operating system shutdown process
d)
Printing a document using a connected printer and driver software
7.
What does 1 Hz represent in CPU clock speed?
a)
One fetch-decode-execute cycle per second
b)
One mouse click registered by the operating system
c)
One email sent to a contact using an email client
d)
One file download completed from an online platform
8.
What does clock speed measure?
a)
The number of instruction cycles the CPU can carry out per second
b)
The duration it takes the cooling fan to regulate system temperature effectively
c)
How much time it takes for a program to load based on internet speed
d)
The number of programs the user can install without slowing down the system
9.
What does the Accumulator register do?
a)
Stores the results of calculations
b)
Stores system time, calendar data, and user timezone preferences
c)
Stores passwords in an encrypted vault connected to user accounts
d)
Stores sound files for quick access in multimedia applications
10.
What does the Arithmetic Logic Unit (ALU) do?
a)
Performs calculations and logical decisions
b)
Outputs graphics to the display using rendering techniques and GPU
c)
Connects to the internet using built-in or external network devices
d)
Stores permanent data on solid-state or hard disk drives
11.
What does the Control Unit do in the CPU?
a)
It enhances audio performance using specialised hardware for sound processing
b)
It sends signals to dictate how data moves around the CPU
c)
It manages external storage devices such as USB drives and external hard disks
d)
It handles software installation and monitors internet usage
12.
What does the CPU do with an instruction during the fetch cycle?
a)
It fetches the next instruction from the computer's main memory
b)
It performs the instruction straight away without delay
c)
It sends the instruction to the monitor to be displayed visually
d)
It stores the instruction in the hard drive for future use
13.
What does the CPU’s clock do?
a)
Controls the timing of all CPU operations
b)
Stores sound files, music playlists, and media content for playback
c)
Generates electricity for the CPU and motherboard from internal circuits
d)
Connects the CPU to external devices via ports and adapters
14.
What does the fetch-execute cycle involve?
a)
Fetching, decoding, and executing instructions repeatedly
b)
Uploading files to the internet using a cloud-based storage system
c)
Charging the laptop battery using mains electricity over time
d)
Deleting unused files to save space and speed up performance
15.
What does the Memory Address Register (MAR) do?
a)
Stores the address in memory of the instruction or data to be fetched
b)
Connects to USB devices and manages input/output operations
c)
Displays files, images, and documents stored in the downloads folder
d)
Stores file names, types, and icons for easy access on the desktop
16.
What does the Memory Data Register (MDR) do?
a)
Holds the data being transferred to or from memory
b)
Monitors system temperature and manages fan speed and cooling
c)
Displays graphics on the monitor using the latest driver updates
d)
Stores software updates downloaded from the operating system
17.
What happens after the CPU decodes an instruction?
a)
It carries out or executes the instruction
b)
It sends the instruction back to memory for further checking or waiting
c)
It disconnects from main memory to avoid overloading
d)
It goes into sleep mode to save power until needed again
18.
What happens during the decode stage of the cycle?
a)
The CPU breaks down the instruction to understand it
b)
The instruction is shown to the user through the user interface
c)
The CPU saves the result to a USB drive for backup
d)
The CPU waits for input from external devices like mouse or keyboard
19.
What is a common feature of embedded systems?
a)
Low power use
b)
Requires multiple logins and full administrative controls
c)
Provides cinematic-quality visual output as standard
d)
Synchronises data continuously across global cloud servers
20.
What is a CPU core?
a)
A graphical chip responsible for all visual output on the monitor
b)
A complete processing unit within the CPU
c)
A battery-powered unit that improves the efficiency of mobile devices
d)
A high-performance fibre cable connecting different parts of the computer
21.
What is a drawback of embedded systems?
a)
Limited power
b)
Complex interfaces with advanced settings for users
c)
High demand on power supply and cooling systems
d)
Excessive onboard memory that needs frequent updating
22.
What is an embedded system?
a)
A computer with a specific function
b)
A device designed only for leisure and multimedia purposes
c)
A high-performance computing setup for general tasks
d)
A platform-independent software suite for various operations
23.
What is clock speed measured in?
a)
Hertz (Hz)
b)
Gigabytes that represent total storage available to the system
c)
Volts which measure the electrical energy used
d)
Frames per second in rendering high-quality videos
24.
What is the fetch-decode-execute cycle?
a)
A repeating process where instructions are fetched, decoded, and executed
b)
A method of installing third-party software and drivers from online sources
c)
A type of memory used for fast access in newer devices
d)
A way of backing up and restoring system data using cloud storage
25.
What is the name of the special register that keeps track of the next instruction to be executed?
a)
Synchronous Input Output Scheduler
b)
Advanced Virtual Memory Address Locator System
c)
Program Counter
d)
File Access Register for Secondary Memory Devices
26.
What is the primary function of a computer?
a)
To take input, process data, and deliver output
b)
To connect to the internet and browse websites with multimedia
c)
To play video games using high-end graphics and audio
d)
To store large amounts of digital data for extended use
27.
What is the primary purpose of cache memory?
a)
To act as a backup in case the computer’s hard drive fails suddenly
b)
To help the computer download and install updates from the internet automatically
c)
To permanently store large programs and operating systems for future use
d)
To provide fast access to frequently used instructions and data
28.
What is the processor's clock speed measured in?
a)
Hertz
b)
Bytes used for storing files of different formats
c)
Volts delivered by the power supply unit in the motherboard circuit
d)
Watts that determine the energy consumption rate of the system
29.
What is the purpose of a computer program?
a)
To give a set of instructions for the computer to follow
b)
To increase screen resolution and display quality over time
c)
To access the internet through Wi-Fi or Ethernet connections
d)
To store files permanently on hard drives and external devices
30.
What is the purpose of the CPU?
a)
To fetch, decode, and execute instructions
b)
To cool down internal components by controlling fan speeds and thermal paste
c)
To supply constant power to the hardware components
d)
To store all user data permanently on internal storage devices
31.
What is the role of the Arithmetic Logic Unit (ALU)?
a)
To display graphical output on the computer's screen using dedicated hardware
b)
To perform calculations and make logical decisions
c)
To manage and configure network connections for external devices
d)
To store permanent files like documents and videos on a long-term basis
32.
What is the role of the Control Unit?
a)
It sends signals to control data movement inside the CPU
b)
It stores files retrieved from online databases and cloud services
c)
It cools the CPU using dedicated fans and thermal regulation tools
d)
It generates electricity for the motherboard and connected devices
33.
What is the role of the CPU?
a)
To fetch, decode, and execute instructions
b)
To display images using video output ports and high-resolution settings
c)
To move the cursor using hardware acceleration and pointer settings
d)
To produce sound through audio processing and speaker systems
34.
What is the role of the Program Counter (PC)?
a)
Keeps track of the memory address of the next instruction
b)
Saves high scores from games and stores them in the cloud
c)
Counts the number of clicks made by the user per session
d)
Calculates scores in online quizzes and competitive assessments
35.
What might the CPU do during the execute stage?
a)
Perform a calculation
b)
Open a new browser tab and load a website with interactive content
c)
Take a screenshot of the desktop and store it in a specified location
d)
Save a file to a shared network location or cloud drive
36.
What percentage of processors are used in embedded systems?
a)
98%
b)
41% with additional use in optional devices
c)
72% for all personal computing environments
d)
33% in legacy support for desktop platforms
37.
What processor type is typical in embedded systems?
a)
Microcontroller
b)
Server-grade multi-core performance CPU with hyper-threading
c)
Modular GPU system with high-speed video processing
d)
Desktop-class chipsets for enhanced productivity tools
38.
What type of storage is RAM?
a)
Primary storage
b)
Tertiary storage used for offline backups and archival data preservation
c)
Secondary storage designed for long-term file retention and portability
d)
Cloud storage that synchronises automatically across multiple devices
39.
What was an early embedded system?
a)
Apollo guidance computer
b)
iPhone 3GS with multitouch support
c)
MacBook Pro for creative workflows
d)
Commodore 64 for general-purpose computing
40.
What’s the main advantage of embedding a system in a device?
a)
Improved reliability
b)
Allows for constant software upgrades and social features
c)
Provides a built-in app store and Wi-Fi calling features
d)
Enables access to remote desktops for collaboration
41.
Where are embedded systems commonly found?
a)
Traffic lights
b)
Cloud-based distributed storage systems
c)
Full-featured desktop publishing environments
d)
Supercomputers with liquid cooling units
42.
Where are instructions fetched from during the fetch stage?
a)
RAM (main memory)
b)
Cache used to temporarily store frequently accessed data and instructions
c)
Hard drive where long-term files and operating systems are stored
d)
CPU fan that keeps the processor cool during operations
43.
Which device is an embedded system?
a)
Microwave
b)
External hard drive with backup encryption
c)
High-spec office desktop running Windows
d)
Multi-user gaming console with modular upgrades
44.
Which is a property of embedded systems?
a)
Small size
b)
Built-in modular ports for display and media expansion
c)
Full-size graphical interface with advanced UI elements
d)
Variable voltage for external GPU compatibility
45.
Which of these would NOT be considered an embedded system?
a)
Tablet
b)
Dishwasher with a pre-set program loop
c)
Digital thermostat with programmed routines
d)
Pacemaker with built-in monitoring logic
46.
Which two components are highlighted inside a desktop computer in the video?
a)
CPU and RAM
b)
Monitor and printer used to show and produce physical copies
c)
Graphics card and SSD for faster data access and display rendering
d)
Keyboard and mouse for typing commands and navigating interfaces
47.
Why are embedded systems hard to program?
a)
Limited resources
b)
They allow unlimited user configurations and setups
c)
They rely on complex multi-threaded graphics rendering
d)
They use excessive memory compared to desktop systems
48.
Why are embedded systems often custom-made?
a)
To suit their job
b)
To support a variety of user profiles and virtual machines
c)
To run entertainment apps and social media tools
d)
To enable dynamic compatibility with all operating systems
49.
Why does mass production help embedded systems?
a)
Cuts cost
b)
Makes operating systems more modular and updatable
c)
Adds smart AI features for predictive tasks
d)
Enhances display sharpness and refresh rate
50.
Why is cache memory faster than main memory?
a)
Because it is refreshed automatically using advanced background processes
b)
Because it uses a complex layered file system similar to SSD drives
c)
Because it is located closer to or inside the CPU
d)
Because it compresses data in real-time to improve overall read and write speeds
51.
What is the order of the fetch-execute cycle?
a)
Fetch → Decode → Execute
b)
Execute → Decode → Fetch
c)
Decode → Fetch → Execute
d)
Execute → Fetch → Decode
52.
Why is the Program Counter updated after each instruction?
a)
To point to the next instruction
b)
To reset the CPU
c)
To count how many commands run per second
d)
To increase memory size
53.
How does the MAR work with the MDR during the fetch cycle?
a)
MAR holds address, MDR holds the data
b)
Both store the same value
c)
MAR stores data, MDR gets the next address
d)
MAR decodes instructions for the CPU
54.
How does increasing clock speed affect CPU performance?
a)
More instructions per second
b)
It uses less electricity
c)
Reduces heat
d)
Makes the PC lighter and portable
55.
How does RAM size impact CPU performance?
a)
Bigger RAM allows more multitasking
b)
It speeds up the hard drive
c)
RAM size changes the monitor resolution
d)
Small RAM creates better security
56.
What is the difference between RAM and ROM?
a)
RAM is volatile, ROM is not
b)
ROM is faster than RAM
c)
RAM runs without power
d)
ROM changes while in use
57.
What is the purpose of virtual memory?
a)
Uses storage as extra RAM
b)
Makes the computer look better
c)
Increases the number of cores
d)
Cleans malware from RAM
58.
What is the role of the cache hierarchy (L1, L2, L3)?
a)
Stores frequently used data closer to the CPU
b)
Manages the power supply
c)
Replaces the BIOS in modern computers
d)
Keeps the screen resolution consistent
59.
What factors affect CPU performance?
a)
Clock speed, cores, cache, bus speed
b)
Battery size, keyboard type, and screen size
c)
USB port count and fan speed
d)
Whether you use wireless or wired internet
60.
Clock speed
a)
Controls how fast instructions run
b)
Changes screen refresh rate
c)
Powers the fans inside the case
d)
Adjusts speaker volume
61.
Number of cores
a)
More cores = more instructions at once
b)
Extra cores increase monitor size
c)
Cores handle internet settings
d)
One core is better than many
62.
Cache size
a)
Bigger cache = faster access to data
b)
Cache only works with external drives
c)
Cache is used for long-term storage
d)
Cache slows down when RAM is full
63.
Bus speed
a)
Faster speed = quicker data transfer
b)
It changes the desktop wallpaper
c)
Slower buses produce more colour depth
d)
It controls the CD drive speed
64.
Why are registers faster than RAM?
a)
Located inside the CPU
b)
Registers have more memory
c)
RAM connects directly to cache
d)
RAM uses fibre optics
65.
How does the CPU use the Program Counter and MAR together?
a)
PC sends the address to the MAR
b)
MAR changes the PC value
c)
PC stores data while MAR runs instructions
d)
MAR and PC do the same job
66.
What is the difference between volatile and non-volatile memory?
a)
Volatile loses data when powered off
b)
Non-volatile is used for cache only
c)
Volatile runs in ROM
d)
Non-volatile deletes data faster
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