Protocols

Protocols

1. Application

   • HTTP (S)
     • HTTP means HyperText Transfer Protocol. HTTP is the underlying protocol used by the World Wide Web and this protocol defines how messages are formatted and transmitted, and what actions Web servers and browsers should take in response to various commands.
   • Pop
     • On the Internet, a point-of-presence (POP) is an access point from one place to the rest of the Internet.
   • IMAP
     • IMAP (Internet Message Access Protocol) is a standard email protocol that stores email messages on a mail server, but allows the end user to view and manipulate the messages as though they were stored locally on the end user's computing device(s).
   • SMTP
     • Simple Mail Transfer Protocol (SMTP) is the standard protocol for email services on a TCP/IP network. SMTP provides the ability to send and receive email messages. SMTP is an application-layer protocol that enables the transmission and delivery of email over the Internet.
   • FTP
     • File Transfer Protocol (FTP) is a standard Internet protocol for transmitting files between computers on the Internet over TCP/IP connections.

2. Transport

   • TCP
     • TCP (Transmission Control Protocol) is a standard that defines how to establish and maintain a network conversation via which application programs can exchange data. TCP works with the Internet Protocol (IP), which defines how computers send packets of data to each other.

3. Network

   • IP
     • An IP network is a communication network that uses Internet Protocol (IP) to send and receive messages between one or more computers. As one of the most commonly used global networks, an IP network is implemented in Internet networks, local area networks (LAN) and enterprise networks.

4. Link

   • Ethernet
     • a system for connecting a number of computer systems to form a local area network, with protocols to control the passing of information and to avoid simultaneous transmission by two or more systems.
   • Bluetooth
     • a standard for the short-range wireless interconnection of mobile phones, computers, and other electronic devices.