Unit I Basics of Network & Physical Layer Types of networks, Network topologies, Design issues for Layers, Network models, OSI model & TCP / IP protocol suite, Types of addressing. (Chapter - 1) Unit II Data Link Layer Data link control, Framing, Flow and error control, Protocols for Noiseless, and Noisy Channels, HDLC, Point to Point Protocol, Media Access Control : Random Access, Controlled Access - Reservation, Channelization protocols. (Chapter - 2) Unit IIINetwork Layer - I Introduction to Network Layer : Network-Layer Services, Circuit switching, Packet Switching, Network-Layer Performance, IPv4 Addresses, Forwarding of IP Packets, Network Layer Protocols : Internet Protocol (IP), ICMPv4, Next Generation IP : IPv6 Addressing, The IPv6 Protocol, The ICMPv6 Protocol, Transition from IPv4 to IPv6. (Chapter - 3) Unit IV Network Layer - II Unicast & Multicast Routing : Introduction, Routing Algorithms, Unicast Routing Protocols, Introduction, Multicasting Basics, Intra-domain Multicast Protocols, Inter-domain Multicast Protocols, IGMP Distance Vector, Link State, Path Vector, Routing in Internet : RIP, OSPF, BGP. (Chapter - 4) Unit V Transport Layer Introduction to transport layer, User Datagram Protocol, Transmission Control Protocol, TCP Congestion Policy, Stream Control Transmission Protocol, Congestion control and QoS, socket programing. (Chapter - 5) Unit VI Application Layer Introduction to Application Layer, Standard Client Server Protocols : World Wide Web and HTTP, Telnet, FTP, Email, SMTP, IMAP, POP, DNS, BOOTP, DHCP. (Chapter - 6)