Layer3 is the Network Layer of the OSI Model, IP operates at Network Layer, OSI Model comprises of 7 layers, Application, Presentation, Session, Transport, Network, Datalink, Physical layers.
It is a model to follow when you are building Operating systems, applications to be used on the internet or compatibility with others.
Hope this helps
Mutahir
PS : Read about it on the wiki link i have provided, let me know for any other questions you may have.
No model or product number is corresponding with this serial number for a network switch device that...
(More)
No model or product number is corresponding with this serial number for a network switch device that is in my handreceipt.