a standard reference model for communication between to end users in a network
ports protocol
The OSI model came after TCP/IP networking protocols were available in networks. The OSI description also as to describe and identify networking components that do not exist in the TCP/IP model.
OSI
It allows categorisation of network components in both functionality and complexity.
application -top of osi model physical- bottom of osi model
Offcourse osi..... TCP/IP is an implementation of osi....
Routers would be in layer 3 of the OSI model also known as the Network layer.
OSI stands for Open system interconnection model. Application layer is the seventh layer in OSI model.
Repeaters operate at the physical layer of the OSI model.
hub work at physical layer of osi model
p2p y osi
An OSI, or Open Systems Interconnect, model is a standard industry model that is used to describe how software data moves through a network from one computer to another. It has seven layers that are application, presentation, session, transport, network, data link, and physical.