• It is a set of rules that determines how data is transmitted between devices in same network.
• It allows connected devices to communicate with each other, regardless of any differences in their structure, design or internal processes.
• Network protocols are the reason you can easily communicate with people all over the world, and it plays a critical role in modern digital communications.

• There are various types of protocols that support a compassionate and major role in communicating with different devices across the network, they are:

Transmission Control Protocol

• It is used for communicating over a network and becomes a popular communication protocol.
• It separates any message into series of pockets where sent from source to destination and there it gets reassembled at the destination.

Internet Protocol

• It is mostly used with TCP and designed explicitly as addressing protocol.
• In network IP addresses in packets help in routing them through different nodes until it reaches the destination system.

User Datagram Protocol

• It is substitute communication protocol to TCP implemented primarily for creating low-latency and loss-tolerating linking between different applications.

Post Office Protocol

• Post Office Protocol is designed for receiving incoming E-mails.

Simple Mail Transport Protocol

• Simple Mail Transport Protocol is designed to distribute and send outgoing E-mail.

File Transfer Protocol

• It allows users to transfer files like text files, multimedia files, program files and documents from one machine to another.

Hyper Text Transfer Protocol

• In this HTML tags are used for creating links and it is designed for transferring a hypertext among two or more systems.

Hyper Text Transfer Protocol Secure

• It is a standard protocol to secure the communication among two computers one using the browser and other fetching data from web server.
• HTTPS is used for transferring data between the client browser (request) and the web server (response) in the encrypted format.

Telnet

• It is designed for connecting one system with another and here the connecting process is termed as remote login.
• Here the local computer system request for connection and remote computer system accepts the connection.

Gopher

• It is a collection of rules implemented for retrieving, searching as well as displaying documents from isolated sites and also works on the client/server principle.