Q.What is a protocol? Name any four Internet protocols and state what each is used for.

For computers to communicate they must follow common rules; the answer should define those rules and then name specific ones with their jobs.

Meaning. As Section g explains, a protocol is a set of rules that governs how data is formatted, sent, and received across a network, so that the sending and receiving computers understand each other. Without shared protocols, different computers could not communicate on the Internet.

Four Internet protocols and their uses:

1. TCP/IP (Transmission Control Protocol / Internet Protocol) — the basic, fundamental protocol suite of the whole Internet. IP handles addressing and routing (breaking data into packets and sending each to the right address); TCP handles reliable delivery (making sure all packets arrive in the correct order and reassembling them).
2. HTTP (HyperText Transfer Protocol) — used to transfer web pages between a web server and a browser; its secure form, HTTPS, encrypts the data. …

Do not confuse a protocol with a device or an address. A protocol is a rule for communication, not a piece of hardware. Also, TCP/IP is the basic Internet suite, not just one single …