Network Protocols

☞ Protocol is a set of rules that governs the network.

☞ There are multiple protocols defined for computer network given below :

1. HTTP (HyperText Transfer Protocol) :
   • HTTP is the protocol used for transferring web pages and resources over the internet.
   • Enables communication between web browsers and servers.
2. FTP (File Transfer Protocol) :
   • FTP is a standard network protocol used to transfer files between computers over a TCP/IP network.
   • Often used for uploading and downloading data from servers.
3. PPP (Point-to-Point Protocol) :
   • PPP is a data link layer protocol used to establish direct connections between two networked devices.
   • It is typically for internet access over dial-up or VPN connections.
4. SMTP (Simple Mail Transfer Protocol) :
   • SMTP is a protocol used for sending and routing email messages between servers on the internet.
5. TCP/IP (Transmission Control Protocol/Internet Protocol) :
   • TCP/IP is the fundamental suite of protocols that governs communication over the internet.
   • It is responsible for ensuring reliable data transmission and routing between devices.
6. POP3 (Post Office Protocol version 3) :
   • POP3 is a protocol used by email clients to retrieve emails from a server.
   • It typically downloads and stores them locally on a user's device.
7. HTTPS (HyperText Transfer Protocol Secure) :
   • HTTPS is an encrypted version of HTTP.
   • It ensures secure communication between web browsers and servers.
   • Often used for sensitive transactions like online banking.
8. TELNET :
   • TELNET is an old network protocol used for remotely accessing and managing devices and servers over a command-line interface, though it's largely replaced by more secure protocols like SSH.
9. VoIP (Voice over Internet Protocol) :
   • VoIP is a technology that allows voice communication over the internet.
   • It enables phone calls to be made through data networks instead of traditional phone lines.