Introduction to Computer Network 1.1. Definition, merits, Demerits1.2. Network Models1.2.1. PAN, LAN, Campus Area Network (CAN), MAN, Country Area Network (CAN*), WAN, GAN.1.2.2. Topological Models (star, bus, distributed bus, mesh, tree, hybrid, ring)1.2.3. Client/Server, Peer-to-Peer & Active Network Model