Application Layer0 Comments

It is the seventh , or highest, layer in the International Organization for Standardization’s Open Systems Interconnection (ISO/OSI) model  which manages the communication between application processes.This layer handles issues like network transparency, resource allocation, and problem partitioning.
It describes how application programs interact with the network operating system, including database management, electronic mail, and terminal emulation programs.

About Application Layer

• This is a point where user or application interfaces with the protocols to gain access to the network.
• This is the top layer of the OSI model.
• This is where communication between two users are established.
• This is where users communicate to the computer.
• The application layer is only concerned with presenting information in human-friendly way.
• The Application Layer receives its information from the ‘Presentation’ layer.
• Examples are WWW, Telnet, FTP, TFTP, E-mail, SNMP,POP3, DNS

• Transport Layer
• Datalink Layer
• Network Layer
• Transport Layer
• Session Layer