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Modified Syllabus of Data Communication and Networking


Unit 1: Network fundamentals

Network elements (LAN, WAN, host, workstation, server)
Physical topologies (bus, star, ring, mesh, backbone)
Physical media(coaxial cable, twisted-pair cable, fiber optics)
Common network connectivity devices (NIC, hub, switch, bridge, router, gateway and other devices)

Unit 2: Networking models

            Layers task, sender, receiver, carrier
            The OSI model,
            Layers in OSI models

Unit 3: Data and signals

            Analog and digital
            Periodic analog signals
            Digital signals
            Attenuation, Distortion, Bandwith, Throughput, Latency
            Digital to digital conversion
            Analog to digital conversion

Unit 4: Transmission media

            Guided media

                        Twisted-pair cable with advantages and disadvantages
                        Coaxial cable with advantages and disadvantages
                        Fiber optics cable with advantages and disadvantages

            Unguided media

                        Radio waves
                        Microwaves
                        Infrared
                        Bluetooth
                        Wi-Fi
                        Wi-Max
Unit 5: The OSI layers and its services

            MAC sub layer
            LLC sub layer
            Logical addressing
            IPv 4
            Unicasting, multicasting, broadcasting
            Addressing mapping, subnetting
            UDP (operation, use, diagram format)
            TCP (services, features, segment, packet format)
            Presentation layer services
            Application layer services

Unit 6: Connecting LANs and Wireless LANS

            Backbone networks
            Virtual LAN
            Cellular telephony
            Satellite network
            SONET/SDH(architecture, layers)
            Frame relay
            ATM

Unit 7: Domain Naming System

            Name space
            Domain name space
            DNS in internet
            Resolution, DNS message, Types of records
            Remote login, electronic mail and file transfer
            E-mail architecture, message user agent, message access agent,  message transfers
            SMTP, POP, IMAP, FTP, web based mail

Unit 8: Network Management SNMP

Network management system(Configuration management, fault management, performance management )SNMP(concept, management concept, structure of management, information management, information base, lexicographic ordering)

Unit 9: Network security
           
Cryptography
Symmetric-Key cryptography
Asymmetric-Key cryptography


      
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