OSI Model-7 layers

In our last class, we were introduced to the seven layers of the OSI model (Open System Interconnection Reference Model ). It was a neat way to learn it because we got into different groups and each group got to research and introduce their layer. Our group was responsible for the application layer. This layer is the closest layer to the end user and acts like a service layer. One example can be name resolution. For example, we remember "google" by its name, not by it's ip address....it a nutshell it Provides access to the network for applications.

Here is a short description for the other 6 layers:
Physical (Layer 1)
Defines the physical structure of the network.
Data-link (Layer 2)
Provides error detection and correction.

Network (Layer 3)
Provides the method which data can be passed from one network system to another.
Transport (Layer 4)
Provides connection services between the sending and receiving devices and ensures reliable data delivery.
Session (Layer 5)
Coordiantes the data exchange between applications on separate devices.

Presentation (Layer 6)
Formats data from the application layer into a format that can be sent over the network.