OSI Data Link Layer
OSI Physical Layer
OSI Presentation Layer
OSI Transport Layer
OSI Application Layer
OSI Session Layer
OSI Network Layer
Provides services to exchange the individual pieces of data over the network between identified end devices
The protocols in this layer describe the mechanical, electrical, functional, and procedural means to activate, maintain, and de-activate physical connections for bit transmission to and from a network device
Defines services to segment, transfer, and reassemble the data for individual communications between the end devices
The protocols in this layer describe methods for exchanging data frames between devices over a common media
Provides for common representation of the data transferred between application layer services
Contains protocols used for process-to-process communications
Provides services to the presentation layer to organize its dialogue and to manage data exchange