What are the rules established for data exchange in a network

What are the rules established for data exchange in a network?

Network protocols are rules established for data exchange in the network.

Network protocol is a collection of rules, standards or conventions established for data exchange in computer networks.

For example, a microcomputer user in the network communicates with a mainframe operator. Since the two data terminals use different character sets, the commands entered by the operators do not recognize each other. In order to enable communication, it is stipulated that each terminal must first convert the characters in its own character set into the characters in the standard character set before entering the network for transmission. After reaching the destination terminal, it is then converted into the characters in the terminal's character set. Of course, for incompatible terminals, in addition to changing the character set characters, other characteristics such as display format, line length, number of lines, screen scrolling method, etc. also need to be changed accordingly.

Related introduction:

Network protocol refers to a set of rules that must be followed when exchanging information between peer entities communicating with each other in a computer network.

Peer entities usually refer to information units at the same level in the computer network architecture. The general system network protocol includes five parts: communication environment, transmission service, vocabulary, information encoding format, timing, rules and procedures. In 1969, when the U.S. Department of Defense established the ARPA Computer Network, the earliest network, it issued a set of military standards for computer communication protocols. It included five protocols. It is customary to use TCP and IP as this set of protocols. general name.

Network Protocol

TCP/IP is the official network protocol of the Internet. It is a set of protocols that provide interconnection functions between many independent host systems. It regulates the transmission and transmission of all computers on the Internet when they are interconnected. Interpretation, execution, and interoperability solve the interconnection, interoperability, and operability of computer systems. It is a recognized international industry standard for network communication protocols. TCP/IP is a packet switching protocol. Information is divided into multiple packets for transmission over the Internet. After reaching the receiver, these packets are reassembled into the original information. In addition to TCP/IP, commonly used network protocols include PPP, SLIP, etc.

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