Review: How the internet sends a message

What is a packet?

A packet is a small chunk of data sent over the internet. It contains information like the sender's address, receiver's address, and the actual data.

True or false: Data travels instantly on the internet.

False, because data takes time to travel through cables and networks.

Difference between TCP and UDP?

TCP is reliable and ensures data is received correctly. UDP is faster but does not guarantee delivery.

What happens when you send an email?

The email is broken into packets, sent through servers, and reassembled at the receiver's device.

Fill in the blank: The __________ connects all computers on the internet.

The internet backbone connects all computers on the internet through high-capacity cables.

What is an IP address?

An IP address is a unique number assigned to each device on the internet. It's like a home address for data.

How does a web browser work?

A web browser requests data from a server, which sends back the website's files. The browser displays them on your screen.

True or false: Wi-Fi is a type of internet connection.

True, because Wi-Fi allows devices to connect to the internet wirelessly.

Question: What does DNS stand for?

DNS stands for Domain Name System. It translates website names into IP addresses.

What is latency?

Latency is the delay before a transfer of data begins. It's measured in milliseconds.

Question: Why do we use routers?

Routers direct data packets to their destination. They connect different networks and devices.

Difference between the internet and the World Wide Web?

The internet is the network of networks. The World Wide Web is a collection of websites and webpages on the internet.