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💻 How Computers Work

Years 6 to 10 · Read up first

10 questions. Get 8 right to earn 10 minutes. All 10 right = +5 bonus. They start easy and get harder as you go, so treat the first few as a warm-up. Every one you miss comes back with the answer and why.

1. What is an operating system?

A single computer gameA folder for storing photosA type of internet cableThe main software that manages a computer's hardware and runs other programs

2. What is a hard drive (or an SSD) mainly used for?

Connecting a mouse and keyboardCooling the computer downStoring files and data long term, even when the computer is offDisplaying graphics on the screen

3. What is an IP address?

A number that identifies a device on a network so data knows where to goA password used to unlock a computerA type of computer virusThe name of a website

4. What does 'hardware' mean?

A type of computer virusThe physical parts of a computer you can touchThe instructions that tell a computer what to doA folder full of files

5. What is an algorithm?

A set of step by step instructions for solving a problem or completing a taskA type of computer chipA password ruleA file that stores photos

6. An image made up of a grid of tiny coloured squares is usually called what?

A byte imageA raster or bitmap image, made of pixelsA vector imageA binary image

7. What does a 'loop' do in a program?

Repeats a set of instructions, often until a condition is metDeletes a file permanentlyConnects the program to the internetStops the program from ever running again

8. Why does visiting a website usually involve both DNS and a server working together?

They do the same job, so only one of them is actually neededThe server looks up the address, and DNS displays the pageDNS stores the whole website, and the server is only used for imagesDNS finds the correct IP address for the website's name, then the browser talks to the server at that address

9. At a basic level, what is a large language model (the kind of AI behind many chatbots) actually doing when it answers a question?

Connecting directly to a person's brain to read their thoughtsRunning a fixed list of pre-written answers written by a personLooking up the exact correct answer in a single trusted encyclopediaPredicting the most likely next words, based on patterns learned from huge amounts of text

10. Why might two websites with completely different addresses (URLs) actually be running on the same physical server?

A single server can host many separate websites at once, each identified by its own domain nameServers can only ever host one website for their entire lifetimeEvery website must have its own dedicated physical server, with no exceptionsDomain names and physical servers are always matched one to one

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