Computer Networks- Notes

Unit I
Introduction Concepts: Goals and Applications of Networks, Network structure and architecture, The OSI reference model, services, Network Topology Design – Delay Analysis, Back Bone Design, Local Access Network Design, Physical Layer Transmission Media, Switching methods, ISDN, Terminal Handling
Unit  II
Medium Access sub layer: Medium Access sub layer – Channel Allocations, LAN protocols – ALOHA protocols – Overview of IEEE standards – FDDI. Data Link Layer – Elementary Data Link Protocols, Sliding Window protocols, Error Handling.
Unit  III
Network Layer: Network Layer – Point – to Pont Networks, routing, Congestion control Internetworking -TCP / IP, IP packet, IP address, IPv6.
Unit  IV
Transport Layer: Transport Layer – Design issues, connection management, session Layer-Design issues, remote procedure call. Presentation Layer-Design issues, Data compression techniques, cryptography – TCP – Window Management.

Unit V 

Application Layer: Application Layer: File Transfer, Access and Management, Electronic mail, Virtual Terminals, Other application. Example Networks – Internet and Public Networks