B-Tech Sixth Semester Computer Network Guidance

B-Tech Sixth Semester Computer Network Guidance

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B-Tech Sixth Semester

Subject: Computer Network 

  • Overview of data communication and Networking:
  • Introduction; Data communications: components, data representation(ASCII,ISO etc.),direction of data flow(simplex, half duplex, full duplex); Networks: distributed processing, network criteria, physical structure (type of connection, topology), categories of network (LAN, MAN,WAN);Internet: brief history, internet today; Protocols and standards; Reference models: OSI reference model, TCP/IP reference model, their comparative study.
  • Physical level:
  • Overview of data(analog & digital), signal(analog & digital), transmission (analog & digital)& transmission media ( guided & non-guided); TDM, FDM, WDM; Circuit switching: time division & space division switch, TDM bus; Telephone network;
  • Data link layer:
  • Types of errors, framing(character and bit stuffing), error detection & correction methods; Flow control; Protocols: Stop & wait ARQ, Go-Back- N ARQ, Selective repeat ARQ, HDLC;
  •  Medium access sub layer:
  • Point to point protocol, LCP, NCP, FDDI, token bus, token ring; Reservation, polling, concentration;
  • Multiple access protocols: Pure ALOHA, Slotted ALOHA, CSMA, CSMA/CD, FDMA, TDMA, CDMA;
  • Traditional Ethernet, fast Ethernet;
  • Network layer:
  • Internetworking & devices: Repeaters, Hubs, Bridges, Switches, Router, Gateway; Addressing : Internet address, classful address, subnetting; Routing : techniques, static vs. dynamic routing , routing table for classful address; Routing algorithms: shortest path algorithm, flooding, distance vector routing, link state routing; Protocols: ARP, RARP, IP, ICMP, IPV6; Unicast and multicast routing protocols.
  • Transport layer:
  • Process to process delivery; UDP; TCP; Congestion control algorithm: Leaky bucket algorithm, Token bucket algorithm, choke packets; Quality of service: techniques to improve Qos.
  • Application layer:
  • DNS; SMTP, SNMP, FTP, HTTP & WWW; Security: ryptography, user authentication, security protocols in internet, Firewalls.
  • Modern topics:
  • ISDN services & ATM ; DSL technology, Cable modem, Sonet.
  • Wireless LAN: IEEE 802.11; Introduction to blue-tooth, VLAN’s, Cellular telephony & Satellite network.

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