UNIT I : Introduction of Local Area Networks TCP/TP Protocol Suit, Media Access Control : Random Access, Controlled Access-Reservation, Channelization. Wired LAN : Ethernet Protocol, Standard Ethernet, Fast Ethernet (100 MBPS), Gigabit Ethernet, 10 Gigabit Ethernet. Wireless LAN : Introduction, IEEE 802.11 Project, Bluetooth. (Chapter - 1) UNIT II : Network Layer Part I Introduction to Network Layer : Network-Layer Services, Packet Switching, Network-Layer Performance, IPv4 Addresses, Forwarding of IP Packets, Network Layer Protocols : Internet Protocol (IP), ICMPv4, Mobile IP. (Chapter - 2) UNIT III : Network Layer Part II Unicast and Multicast Routing : Introduction, Routing Algorithms, Unicast Routing Protocols, Introduction, Multicasting Basics, Intra-domain Multicast Protocols, Inter-domain Multicast Protocols, IGMP. Next Generation IP:IPv6 Addressing, The IPv6 Protocol, The ICMPv6 Protocol, Transition from IPv4 to IPv6. (Chapter - 3) UNIT IV : Transport Layer Introduction to Transport Layer : Introduction, Transport-Layer Protocols, Transport Layer Protocols : Introduction, User Datagram Protocol, Transmission Control Protocol, SCTP. (Chapter - 4) UNIT V : Application Layer Introduction to Application Layer, Standard Client Server Protocols : World Wide Web and HTTP, FTP, Electronic Mail, Telenet, SSH, DNS. Network Management : Introduction, SNMP. (Chapter - 5) UNIT VI : Network Security Cryptography and Network Security : Introduction Confidentiality, Other Aspects of Security. Internet Security : Network-Layer Security, Transport-Layer Security, Application-Layer Security, Firewalls. (Chapter - 6)