Network:-
             - A Network is an interconnection of devices
Networking:-
            - Networking is the communication between the interconnected devices

Types of Networks:-
Local Area Network(LAN)
                       - Operate within a limited geographical area
                       - Provides full-time connectivity to local services
Metropolitan Area Network (MAN)
                       - span with in city
                       - provides full time and part time connectivity
Wide Area Network(WAN)
                       - Operates over a large geographical area
                       - provides full time and part time connectivity
Network NIC Devices:-
NIC
                - The network interface card is frequently called as a NIC, It forms an interface between the network devices (computers) and the Ethernet (LAN)
HUB
               - It is generally used in to connect all devices all devices on a network so that they can communicate with each other. It always do broadcasting
Switch
               - Like HUB, It is also used to connect all devices on a network so that they can communicate with each other. But first time it will broadcast and from second time onwards it will do unicast.