EE205: Computer Networks

DEPARTMENT OF COMPUTER SCIENCE & APPLICATIONS1BCA 101: Computer Fundamental & ProgrammingUnit -- IV2DEPARTMENT OF COMPUTER SCIENCE & APPLICATIONSOverview of Networking: An introduction to computer networking, Network types (LAN, WAN, MAN), Network topologies, Modes of data transmission, Forms of data transmission, Transmission channels(media), Introduction to internet and its uses, Applications of internet, Hardware and Software requirements for internet, Intranet,Applications of intranetCOMMUNICATION MODEL3DEPARTMENT OF COMPUTER SCIENCE & APPLICATIONS

DATA TRANSMISSION MODES4DEPARTMENT OF COMPUTER SCIENCE & APPLICATIONS

DATA TRANSMITION SPEED5DEPARTMENT OF COMPUTER SCIENCE & APPLICATIONSBandwidth: Range of frequencies available for datatransmission. It refers to data transmission rate. Higher the bandwidth, the more data it can transmit

Baud: Unit of measurement of data transfer rate.Measured in bits per second (bps)

DATA TRANSMITION MEDIA6DEPARTMENT OF COMPUTER SCIENCE & APPLICATIONSTwisted Pair wire (UTP cable)

co axial cable

Microwave

Communication satelite

Optical Fiber

Unshielded Twisted-Pair (UTP)

DEPARTMENT OF COMPUTER SCIENCE & APPLICATIONS7CO-AXIAL CABLEDEPARTMENT OF COMPUTER SCIENCE & APPLICATIONS8

MICROWAVEDEPARTMENT OF COMPUTER SCIENCE & APPLICATIONS9

OPTICAL FIBER

DEPARTMENT OF COMPUTER SCIENCE & APPLICATIONS10SATELLITE COMMUNCATION

DEPARTMENT OF COMPUTER SCIENCE & APPLICATIONS11TOPOLOGYTerm network topology refers to the way in which the nodes of a network are linked together.The main types of network topologies are:STARLINEAR BUSRingTree or Hybrid_ MESH

DEPARTMENT OF COMPUTER SCIENCE & APPLICATIONS12STARDEPARTMENT OF COMPUTER SCIENCE & APPLICATIONS13

BUS DEPARTMENT OF COMPUTER SCIENCE & APPLICATIONS14

ADVANTAGES/DISADVANTAGES OF BUS TOPOLOGYDEPARTMENT OF COMPUTER SCIENCE & APPLICATIONS15

Hybrid or TreeDEPARTMENT OF COMPUTER SCIENCE & APPLICATIONS16

MESH DEPARTMENT OF COMPUTER SCIENCE & APPLICATIONS17

RingDEPARTMENT OF COMPUTER SCIENCE & APPLICATIONS18

NETWORK TYPENetworks are broadly classified into two types: LocalArea Network (LAN) and Wide Area Network (WAN)Local Area Network (LAN) as compared to WAN: Limited to a small geographic coverageHas much higher data transmission rateExperiences fewer data transmission errorsHas lower data communication costTypically owned by a single organizationNetworks that share some of the characteristics of both LANs and WANs are referred to as Metropolitan Area Network (MAN)

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