From technological point of view a network is a group of nodes which communicate with each other via some link. The nodes can be computers, mobile phones, printers etc. The link can be wireless or wired.
What is Network Structure?
We use the term network structure or network architecture to describe the patterns of node links. Means how network is laid down.
Link is a channel or path which helps data to move from one point to another point. The two devices must have a common link to share data with each other. There are two possible types of physical network connection between devices.
As the name suggests that it is a dedicated link between two devices. When you send a command via remote control to your air conditioner or television, you basically make a point-to-point link. Similarly the WiFi link between your mobile phone and router is a point to point link. See fig-1
2. Multi-point Connection
If a group of devices share a link then it’s a multi-point link. For example your cable TV is a multi-point link where multiple nodes share a cable coming from service provider.