Year 9 GCSE 1.1 End of Unit ALL Questions.

How does having more CPU cores affect performance?

• It allows multiple instructions to be processed simultaneously
• It disables older cores to improve energy efficiency and prevent overheating
• It enables the computer to automatically update itself without user interaction
• It guarantees that all software will run at twice the speed without exception

What are instructions stored on in embedded systems?

• ROM
• Hard drives with spinning disks
• RAM cache accessed over a network
• GPU-based system for persistent storage

What are registers in the CPU?

• Tiny, fast memory locations with specific purposes
• Large capacity memory slots that can be upgraded to store more user data
• External chips that connect to USB ports to improve processing power
• Cloud-based memory units that synchronise automatically across multiple devices

What are the three basic functions of a computer?

• Input, Process, Output
• Store, Print, Upload files using external devices and applications
• Save, Copy, Paste data across different folders and locations
• Type, Click, Drag items using input peripherals like mouse and keyboard

What are the two critical components inside a typical desktop computer?

• Memory and central processing unit (CPU)
• Power supply unit that connects all devices and the motherboard with integrated circuits
• Monitor and keyboard used for user interaction and visual output
• Hard drive and graphics card used for storage and image rendering

What could executing an instruction involve?

• Getting data from memory, doing a calculation, or saving the result
• Sending an email with attached images and files through an email client
• Turning off the computer using the operating system shutdown process
• Printing a document using a connected printer and driver software

What does 1 Hz represent in CPU clock speed?

• One fetch-decode-execute cycle per second
• One mouse click registered by the operating system
• One email sent to a contact using an email client
• One file download completed from an online platform

What does clock speed measure?

• The number of instruction cycles the CPU can carry out per second
• The duration it takes the cooling fan to regulate system temperature effectively
• How much time it takes for a program to load based on internet speed
• The number of programs the user can install without slowing down the system

What does the Accumulator register do?

• Stores the results of calculations
• Stores system time, calendar data, and user timezone preferences
• Stores passwords in an encrypted vault connected to user accounts
• Stores sound files for quick access in multimedia applications

What does the Arithmetic Logic Unit (ALU) do?

• Performs calculations and logical decisions
• Outputs graphics to the display using rendering techniques and GPU
• Connects to the internet using built-in or external network devices
• Stores permanent data on solid-state or hard disk drives