What does VTN mean?

This article mainly introduces what VTN means, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let the editor take you to understand it.

VTN, namely Virtual Terminal Network, refers to the network virtual terminal. VTN consists of two parts: 1, output device, usually display, for outputting remote data; 2, input device, for local data input.

Network Virtual Terminal (VTN), Virtual Terminal Network

Composition:

The network virtual terminal VTN consists of two parts:

Output device: output remote data, usually a monitor

Input devices: local data entry

Data format:

The data transmitted on the network virtual terminal VTN uses 8bit bytes of data, where

Bytes with the highest bit 0: general data

Bytes with the highest bit 1: for the VTN command

At the beginning of the communication, both sides of the communication support a basic subset of VTN terminal characteristics (which can only distinguish what is data and what is command) in order to communicate at the lowest level. on this basis, the two sides negotiate to determine the higher-level characteristics of VTN through VTN commands to achieve the expansion of NVT functions.

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