Telnet allows clients and servers to communicate over a network using the Telnet protocol. They are referred to as a network virtual terminal (NVT). When using Telnet, the client must know the address of the host in order to connect. Any text typed is sent with the host's IP address and Telnet commands to the server. The server then processes the received data and responds accordingly. This transaction of data makes interactions over Telnet slower than using a local computer.

1. Understanding Telnet
● Telnet Data Transaction
● For Using Telnet
● NVT1
● NVT2
● Reference

2. For using Telnet
● When I used Telnet, we must know address of the
host because host indicate a companion. If we do
not know address of the host, we can not contact
companion
● When we express, we express to use keyboard.
● Word express based on keyboard, it indicate
hardware's display.

3. NVT1
● A client and server communicate by using the Telnet
protocol.
● They are called a network virtual terminal (NVT).

4. NVT2
● After the data, typed text in a Telnet session is
compiled , the data is sent.
● The data is sent with the host's IP address and
Telnet commands is also sent.

5. Telnet Data Transaction
● Every time the Telnet server
receive the data, the server
processes data and acts as
expected from the data.
● The data must go through
between the server and the
client, any time of
transaction. This makes the
work on telnet a bit slower
than working with actual Image of telnet data transaction.
computer. Left: the client, Right: the server

6. References
The image that the slide2 uses is in
http://www.hw-group.com/products/hw_vsp/images/VSP_NVT_remote_IO.png
The image that the slide3 uses is in
http://www.keithparkerinc.com/photos/uncategorized/2008/05/20/16ps10.jpg
The image that the slide5 uses is
from ITWissen (written in German)
http://www.itwissen.info/definition/lexikon/Telnet-Protokoll-telnet.html