Let’s play →
Technology

Digital World, Decoded

Understand the everyday concepts behind websites, computers and the information they move.

Easy10 questionsAbout 3 minutesNo timer

Understand the everyday concepts behind websites, computers and the information they move. Take ten thoughtfully chosen questions at your own pace. Each answer comes with a short explanation to help you connect the facts and remember something new.

Question 1 of 100 correct

What does CPU stand for?

Take your time. There’s no timer.
KEEP THE DISCOVERIES GOING

Your question-by-question study guide

Prefer to read, or revisit what you learned? Explore every question below. Open an answer when you’re ready.

1. What does CPU stand for?

  • Central processing unit
  • Computer power utility
  • Central program upload
  • Circuit printing unit
Reveal answer and explanation

Central processing unit — A CPU executes instructions and performs the core calculations of a computer.

2. What is a web browser used for?

  • Cooling a processor
  • Printing circuit boards
  • Charging batteries
  • Accessing and displaying websites
Reveal answer and explanation

Accessing and displaying websites — Browsers retrieve and render web content so people can navigate it.

3. Which number system uses only 0 and 1?

  • Hexadecimal
  • Roman numerals
  • Binary
  • Decimal
Reveal answer and explanation

Binary — Binary is a base-two system, making it useful for representing digital states.

4. What does RAM generally store?

  • Physical keyboard keys
  • Data currently in use
  • Only permanent backups
  • Printer ink levels only
Reveal answer and explanation

Data currently in use — RAM provides working memory and normally loses its contents when power is removed.

5. Which device routes data between computer networks?

  • Router
  • Monitor
  • Microphone
  • Scanner
Reveal answer and explanation

Router — Routers forward packets between networks using destination information.

6. What is the purpose of HTTPS?

  • Making every website truthful
  • Removing all advertisements
  • Increasing screen brightness
  • Protecting web communication in transit
Reveal answer and explanation

Protecting web communication in transit — HTTPS uses TLS to encrypt and authenticate communication between browser and server.

7. Which file extension commonly identifies a PNG image?

  • .csv
  • .exe
  • .png
  • .mp3
Reveal answer and explanation

.png — PNG is an image format that supports lossless compression and transparency.

8. What is an operating system?

  • A battery component
  • Software managing hardware and applications
  • A type of screen
  • A network cable
Reveal answer and explanation

Software managing hardware and applications — Operating systems allocate resources and provide services for applications.

9. What does a strong unique password help prevent?

  • Unauthorized account access
  • All hardware failure
  • Screen glare
  • Loss of electrical power
Reveal answer and explanation

Unauthorized account access — A unique password limits the risk that one compromised account exposes another.

10. What is a backup?

  • A faster processor
  • A screen setting
  • A browser tab
  • An additional copy of data
Reveal answer and explanation

An additional copy of data — Backups allow files to be restored if originals are lost or damaged.

Another spark of curiosity