2. TCP/IP: TCP
The protocol used for communicating over the internet is called TCP/IP, or "Transmission Control Protocol / Internet Protocol". It has two parts: TCP and IP.
TCP - Transmission Control Protocol
This protocol governs how messages are prepared for transmission, and how computers that receive a message from the Internet will put the message back together.
When sending data the TCP rules (protocol) include
- Dividing the message into chunks called "packets"
- Adding a sequence number to each packet so the message can be re-assembled
- Adding extra error-correction information, so errors can be spotted and fixed
When receiving data the TCP rules (protocol) include
- Examining each packet for errors by using the extra information that was added to it
- Fixing any errors (if possible) or requesting that the packet be re-sent
- Spotting missing packets and requesting them to be re-sent
- If all packets are present, using the sequence number of each packet to re-assemble the message
Challenge see if you can find out one extra fact on this topic that we haven't already told you
Click on this link: What is TCP/IP