UNIT - I Network hardware, Network software, OSI, TCP/IP Reference models, Example Network: ARPANET, Internet. Physical Layer: Guided Transmission media: twisted pairs, coaxial cable, fiber optics, Wireless transmission. (Chapter - 1) UNIT - II Data link layer: Design issues, framing, Error detection and correction. Elementary data link protocols: simplex protocol, A simplex stop and wait protocol for an error-free channel, A simplex stop and wait protocol for noisy channel. Sliding Window protocols: A one-bit sliding window protocol, A protocol using Go-Back-N, A protocol using Selective Repeat, Example data link protocols. Medium Access sub layer: The channel allocation problem, Multiple access protocols: ALOHA, Carrier sense multiple access protocols, collision free protocols. Wireless LANs, Data link layer switching. (Chapter - 2) UNIT - III Network Layer: Design issues, Routing algorithms: shortest path routing, Flooding, Hierarchical routing, Broadcast, Multicast, distance vector routing, Congestion Control Algorithms, Quality of Service, Internetworking, The Network layer in the internet. (Chapter - 3) UNIT - IV Transport Layer: Transport Services, Elements of Transport protocols, Connection management, TCP and UDP protocols. (Chapter - 4) UNIT - V Application Layer - Domain name system, SNMP, Electronic Mail; the World WEB, HTTP, Streaming audio and video. (Chapter - 5)
