10fig03

Character-Mode TELNET

"The rain in Spain ..

Each character a user types in a character-mode TELNET session is transmitted over the network as it is typed.

NetWork Output

-w	TCP/IP Header	T
w	TCP/IP Header	"h"
'w	TCP/IP Header	"e"
W	TCP/IP Header	.,
r’ w	TCP/IP Header	"r"
	TCP/IP Header	"a"
	TCP/IP Header	"i"

Block-Mode TELNET

User input

"The rain in Spain..

Network Output

Each character a user types in a Block-Mode TELNET session is buffered by the Client and transmitted as a błock of characters when a "transmit" key is pressed.

TCP/IP Header ! "The rain in Spain ..