FOR REMEMBER:-

“PLEASE DO NOT THROUGH SU AZE PIZZA AWAY”

OR

“ALL PEOPLE SEEM TO NEED DATA POROCESING”

APPLICATION LAYER

It works closest to the user and provider file transmission , message exchange, terminal session and much more.

            The layer does not include the actual application, but includes the protocols that support the application. When an application needs to send data over the network, it passes instruction and the data to the protocols that support it at the application layer. Application layer send requests to an API, which is the door way to the supporting protocols. This layer process and property formats the data and passes it down to the next layer within the OSI model.

            Outlook                    Internet Explorer                         Printer

APPLICATION                   APPLICATION                               APPLICATION

 

SMPT

HTTP

LDP

EXAMPLES OF PROTOCOLS UNDER THIS LAYER:-

·        Simple mail transfer protocols (SMTP)

·        Hypertext transfer protocols(HTTP)

·        File transfer protocols(FTP)

·        Line printer daemon (LPD)

·        World wide web(WWW)

·        Talent

·        Trivial file transfer protocol (TETP)

·        Simple network management protocol (SNMP)