Network topology
Introduction A network topology refers to the physical and logical arrangement of nodes and connections in a network. Each node is connected with each using networking devices.
Network layer
Introduction The third layer of the osi reference model is network layer. It is responsible for providing functions for a logical topology of your network using logical addresses.
Physical layer
Introduction The first layer of the osi reference model is physical layer. This layer is responsible for the physical mechanics of a network connection.
Application layer
Introduction Application layer is the seventh and the uppermost layer of the OSI reference model. It provides an interface that a person interacts with an application.