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Share with the community a way you would like to introduce data transmission in computer networks into the classroom. It could be using any of the resources in the MOOC, a resource you have found or your own idea

1.What is the Internet?

The Internet is a global computer network that connects millions of computers and computer networks around the world and uses the TCP/IP communication protocol suite.


– Provide huge and endless resources.

For example, visit the encyclopedia page 2 letters, electronic lesson plans

– Provide fast, cheap, time-saving services.

For example: chat, games, email,…

– Guaranteed a whole new way of communication.

For example: shop online, make a phone call

  1. How do computers on the Internet communicate with each other?

The computers in the Internet work and communicate with each other because they use the same set of TCP/IP communication protocols.

TCP (Transmission Control Protocol):

A protocol that allows two communication devices in a network to communicate with each other and exchange data streams (encapsulated) or information to be transmitted.

Be sure to split the data at the sender into small packets of a defined shape and size and recover the original data at the receiver.

IP (Internet Protocol):

Is the protocol responsible for addressing and routing, allowing packets to reach their destination individually, independently.

Package contents include:

– Receiving address.

– Sending address.

– Data, length.

– Other control and service information.

How does the packet reach the right recipient?

In order for the packet to reach the correct recipient machine (the destination machine), the packet must contain information to identify the destination machine. Each computer that joins the network must have a unique address called an IP address.

IP address in the Internet: A sequence of four integers separated by a period (.).

For example:

For the convenience of users, IP addresses are converted to characters (domain names).

For example:


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