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SYLLABUS

Unit-I

Introduction: Networks, Network Types, Internet History, Standards and Administration, Network Models: Protocol Layering, TCP/IP Protocol Suite, The ISO Model. The Physical Layer: Data and Signals, Transmission Impairment, Data Rate Limits, Performance, Transmission Media: Introduction, Guided Media, Unguided Media, Switching: Introduction, Circuit Switched Networks, Packet Switching.

Unit-II

The Data Link Layer: Introduction, Link Layer Addressing, Error Detection and Correction: Cyclic Codes, Checksum, Forward Error Correction, Data Link Control: DLC Services, Data Link Layer Protocols, HDLC, Point to Point Protocol, Media Access Control: Random Access, Controlled Access, Channelization, Connecting Devices and Virtual LANs: Connecting Devices.

Unit-III

The Network Layer: Network Layer Design Issues, Routing Algorithms, Congestion Control Algorithms, Quality of Service, Internetworking, The Network Layer in the Internet: IPv4 Addresses, IPv6, Internet Control Protocol, OSPF, BGP, IP, ICMPv4, IGMP.

Unit-IV

The Transport Layer: The Transport Service, Elements of Transport Protocols, Congestion Control, The Internet Transport Protocols: UDP, TCP, Performance Problems in Computer Networks, Network Performance Measurement.

Unit-V

The Application Layer: Introduction, Client Server Programming, WWW and HTTP, FTP, E-mail, TELNET, Secure Shell, Domain Name System, SNMP.