Computer Networks

OSI, TCP/IP and other networks models, Examples of networks : Novell networks, Arpanet, Internet, Network topologies WAN, LAN, MAN.Physical LayerTransmission media copper, Twisted pair wireless, Switching and encoding asynchronous communications; Narrow band, Broad band ISDN and ATM.Data Link LayerDesign issues, framing, error detection and correction, CRC, Elementary protocol-stop and wait Sliding window, Slip, Data link layer in HDLC, Internet, ATM.Medium Access SublayerALOHA, MAC addresses, Carrier sense multiple access. IEEE 802.X Standard ethernet, Wireless LANs, Bridges.Network LayerVirtual circuit and datagram subnets - Routing algorithm shortest path routing, Flooding, Hierarchical routing, Broadcast, Multicast, Distance vector routing.Dynamic routing - Broadcast routing, Rotary for mobility. Congestion, Control algorithms - General principles of congestion prevention policies. Internet working. The network layer in the Internet and in the ATM networks.Transport LayerTransport services, Connection management, TCP and UDP protocols; ATM AAL layer protocol.Application LayerNetwork security, Domain name system, SNMP, Electronic mail; the World WEB, Multimedia.