DC (B-TECH information technology 4th)

Introduction: Uses of Computer Networks, Network Hardware, Network Software,

seven-layer OSI architecture of ISO, concepts of layer protocols and layer interfaces,

TCP/IP reference model, comparison of OSI &TCP/IP reference models[20%]

Physical Layer: Transmission media , telephone system (structure, trunks , multiplexing

and switching), wireless transmission , [15%]

Data Link Layer: Design Issues, Error detection and correction , elementary data link

protocols , sliding window protocols.[20%]

Medium Access Sub layer: The channel allocation , IEEE standards 802 for LAN &

MAN.

Network Layer: Design issues , routing algorithms, Congestion control Algorithims, IP

protocol , IP addresses, Sub nets.[15%]

Transport Layer: Treansport Services, Elements of Transport protocols, TCP service

Model , protocol, Header.[10%]

Application Layer: Network security, DNS. E-mail world wide web, multimedia.[10%]