Lesson 1 Internet

1⃣ Q: What is the Internet in simple terms?

A: A global network connecting billions of computers and devices that share information using cables, satellites, and wireless signals.

2⃣ Q: When did the Internet begin and why?

A: It began in the 1960s so government researchers could share information and build a communication system that could survive a nuclear attack.

3⃣ Q: What was ARPANET?

A: The Advanced Research Projects Agency Network — the first major network that later evolved into today’s Internet.

4⃣ Q: When is the Internet’s official birthday?

A: January 1, 1983.

5⃣ Q: What is an Internet Service Provider (ISP)?

A: A company that provides Internet access (examples: Verizon, Comcast, Spectrum).

6⃣ Q: Name four common types of Internet services.

A: Dial-up, Cable, Satellite, and 3G/4G/5G wireless.

7⃣ Q: Why isn’t the Internet centralized?

A: It’s built from billions of independent networks with no single control point, allowing anyone to connect and communicate end-to-end.

8⃣ Q: What is a computing device?

A: A physical artifact that can run a program (computer, tablet, router, smart sensor).

9⃣ Q: What is a computing system?

A: A group of computing devices and programs working together for a shared purpose.

🔟 Q: What is a computer network?

A: Interconnected computing devices that can send and receive data — a type of computing system.

11⃣ Q: What is end-to-end connectivity?

A: The principle that anyone on the Internet can communicate directly with anyone else at any time.

12⃣ Q: Why are distributed networks preferred over centralized ones?

A: Because if one part fails, other routes keep devices connected — increasing reliability.

13⃣ Q: Who is Vint Cerf and what did he say?

A: A co-creator of the Internet’s architecture who said, “You can’t escape from contact with the Internet. So why not get to know it?”