Computer Networks

Introduction to Data Communication - Modes of communication, Physical topologies, Signal encoding, Multiplexing, Transmission media overview. Performance indicators – Bandwidth, Throughput, Latency, Queuing time, Bandwidth–Delay product. Basics of Internet, The Network Edge, The Network Core, Protocol layers and their service models - The OSI reference model, The TCP/IP reference model.

Principles of network applications, The Web and the HTTP, Electronic mail, Multipurpose Internet Mail Extension (MIME), File Transfer Protocol (FTP), Domain Name System (DNS), Simple Network Management Protocol. Peer-to-peer applications - P2P file distribution. Video streaming and Content Distribution Networks.

Introduction and Transport Layer services, Multiplexing and Demultiplexing, UDP, Principles of Reliable Data transfer – Go-Back-N and Selective Repeat, TCP, Principles of Congestion Control, TCP Congestion control.

Overview, Router, IPv4 and Addressing, Network Address Translation, IPv6, Routing Algorithms – Link state and Distance Vector Routing, Open Shortest Path First Protocol (OSPF), Border Gateway Protocol (BGP), Internet Control Message Protocol (ICMP), Address Resolution Protocol (ARP), Reverse Address Resolution Protocol (RARP), Bootstrap Protocol (BOOTP), Dynamic Host Configuration Protocol (DHCP).

Services provided by DLL, Error Detection and Correction Techniques, Sliding window protocols, High-Level Data Link Control (HDLC) protocol. Medium Access Control (MAC) sublayer – Channel allocation problem, Multiple access protocols, Ethernet, Wireless LANs - 802.11, Repeaters, Hubs, Bridges, Switches, Routers and Gateways.