Layer 7 Web gets its name from the seventh layer of the OSI model. The OSI model (Open Systems Interconnected) is a conceptual model that contains seven layers. The layers are:
Physical Layer
This layer “conveys the bit stream”. The physical means by which the data is transported. Wires, Cables, Optical Networks.
Datalink Layer
This is where data packets are encoded and decoded into bits.
Network Layer
Where the switching and routing for transmitting data from node to node.
Transport Layer
Provides transparent transfer of data between end systems, or hosts, and is responsible for end-to-end error recovery and flow control. It ensures complete data transfer.
Session Layer
Establishes, manages and terminates connections between applications
Presentation Layer
The presentation layer works to transform data into the form that the application layer can accept.
Application Layer
Supports application and end-user processes
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