COMPUTER NETWORK AND COMMUNICATION
Group A
Introduction. Principles of data communications:
Analog and digital transmission, multiplexing, transmission impairments, concepts of frequency spectrum and bandwidth, bandwidth efficient modulation techniques.
Basics of computer networks: Protocol hierarchies, design issues for the layers, interfaces and services. Concepts of circuit switching and packet switching, connection-oriented and connectionless services.
Reference models-OSI model and TCP/IP reference model. Example networks.
Physical layer: Transmission media-twisted pair, coaxial cable, optical fibre. Wireless transmission-radio, microwave, infrared and millimeter waves, telephone systems, cell phones. RS-232C, SONET, modems.
Data link layer: Services provided to the network layer, framing, error control, flow control. Error detection and correction. Unrestricted simplex protocol, stop-andwait Protocol, sliding window protocols. HOLC
Network layer: Design issues. Routing algorithms. Congestion control. Internetworking: concepts of sub network, bridges, etc. X.25 frame relay.
Group B
Transport layer: Services provided to the upper layers. Elements of transport control protocols-addressing, establishing a connection, releasing a connection, flow control and buffering, crash recovery. Example of simple
protocols using services primitives. TCP and UDP.
IP: IPV4 datagram, IP addressing. ICMP.
Media access control protocols: Concept of LANs and MANs. ALOHA, slotted ALOHA, CSMA, CSMA/CD. Ethernet, token bus, token ring, FDDI
ATM: Protocol architecture. ATM logical connections. ATM cells. Transmission of ATM cells. ATM adaptation layer. Traffic and congestion control.
Narrowband and broadband ISDN. Application layer:
SNMP, SMTP, FTP, TELNET.
Recommended Books
1. A S Tanenbaum. CompUter Networks. Prentice-Hallof
India (P) Ltd., New Delhi.
2. William Stallings.Data and Computer Communications.
Prentice-Hallof India (P) Ltd., New Delhi.
3. Uyless Black.Computer Networks, Protocols,Standards
and Interfaces.Prentice-Hallof India (P)Ltd.,New Delhi.
4. D Bertsekasand Roben GaIJager.DataNetworks.Prentice-
Hall of India (P) Ltd., New Delhi.