Networking and configurations AND Open system:
A system which is connected to the network and is ready for communication.
A system which is not connected to the network and can’t be communicated with.
It is the interconnection of multiple devices, generally termed as Hosts connected using multiple paths for the purpose of sending/receiving data or media.
There are also multiple devices or mediums which helps in the communication between two different devices which are known as Network devices. Ex: Router, Switch, Hub, Bridge