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Network Topology

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MASTER~JAI

MASTER~JAI

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  • 1. SEMINAR ON NETWORK TOPOLOGY
    • NAME: JAI~MCA
    • BRANCH: MCA
    • ROLL NO: 20
  • 2. ABSTRACT
    • Although the computer industry is youngest ,the major part of this spectacular progress is contributed by networking.To get acquainted with networks you must know about:
    • Network topologies
  • 3.
    • Introduction
    • Content
    • Hubs
    • Switch
    • Advantages & Disadvantages
  • 4. INTRODUCTION
    • WHAT IS IT?
      • A Network is a set of devices connected by media links. These devices are termed as Nodes. A Node can be any device which is capable of sending and/or receiving data from/to other Nodes. The links are called communication channels .
  • 5. CONTENT MAIN MENU SUMMARY EXIT EXERCISE OBJECTIVE Definition of Network Topology Types of Network Topology Differentiation Between the Types of Network Topology
  • 6. DEFINITION What is a Topology ? The physical topology of a network refers to the configuration of cables, computers and other peripherals.
  • 7. TYPES OF NETWORK TOPOLOGY Three commonly used network topologies are:- Bus network . Ring network . Star network .
  • 8. STAR TOPOLOGY
      • All devices connect to a
      • central device, called
      • hub.
      • All data transferred
      • from one computer to
      • another passes through
      • hub .
  • 9. STAR TOPOLOGY
  • 10. BUS TOPOLOGY
      • All computers and devices connected to central cable or bus.
    Consists of a main run of cable with a terminator at each end. Popular on LANs because they are inexpensive and easy to install.
  • 11. BUS TOPOLOGY USER USER USER USER USER
  • 12. RING TOPOLOGY
      • Cable forms closed ring or loop, with all computers and devices arranged along ring .
      • Data travels from device to device around entire ring, in one direction.
      • Primarily is used for LANs , but also is used in WANs .
  • 13. RING TOPOLOGY
  • 14.
    • ADVANTAGES :
    • NO TRAFFIC PROBLEMS
    • PRIVACY AND SECURITY
    • EASY FAULT IDENTIFICATION & ISOLATION
    • ROBUST
    • DISADVANTAGES:
    • MORE CABLES REQUIRED
    • MORE SPACE CONSUMPTION
    • EXPENSIVE HARDWARE
    • MORE I/O NODES
    • DIFFICULT INSTALLATION & CONFIGURATION
    MESH TOPOLOGY
  • 15. TREE TOPOLOGY Server
  • 16. Types of Hubs
    • Passive Hubs :- It simply receive data from one port of the hub and send it to the other ports.
    • Active Hubs:- It provide the same functionality of a passive hubs with an additional features . Active hubs repeating the data while resending it to all of the ports.
  • 17. Switches
    • A common solution to traffic problems is to implement switches.
    • Switches also referred to as multi port bridges.
    • Automatically determines the MAC address of the device connect to each port of the switch.
  • 18. DIFFERENTIATION BETWEEN THE THREE TYPES OF NETWORK TOPOLOGY WHAT IS DIFFERENTIATION BETWEEN THE THREE OF NETWORK TOPOLOGY?
  • 19. DIFFERENTIATION BETWEEN THE THREE TYPES OF NETWORK TOPOLOGY STAR 2) If the hub or concentrator fails, nodes attached are disabled. 2) Security can be implemented in the hub/switch. 1) Requires more cable length than a linear topology. 1) Easy to install and wire. 3) More expensive than linear bus topologies because of the cost of the concentrators. 3) Easy to detect faults and to remove parts. DISADVANTAGE ADVANTAGE
  • 20. DIFFERENTIATION BETWEEN THE THREE TYPES OF NETWORK TOPOLOGY BUS 2) Terminators are required at both ends of the backbone cable. 2) Requires less cable length than a star topology. 1) Entire network shuts down if there is a break in the main cable. 1) Easy to connect computer or peripheral to a linear bus. 3) Difficult to identify the problem if the entire network shuts down. DISADVANTAGE ADVANTAGE
  • 21. DIFFERENTIATION BETWEEN THE THREE TYPES OF NETWORK TOPOLOGY RING 2) If any of the nodes fail then the ring is broken and data cannot be transmitted successfully. 2) The transmission of data is relatively simple as packets travel in one direction only.
    • Data packets must pass through every computer
    • between the sender and recipient therefore, this makes it slower.
    1) Data is quickly transferred without a ‘bottle neck’. 3) It is difficult to troubleshoot the ring. DISADVANTAGE ADVANTAGE
  • 22. SUMMARY BUS TOPOLOGY
    • DEFINITION
    • All computers and devices connected to central cable
    • ADVANTAGE
    • Easy to connect a computer or
    • peripheral to a linear bus.
    • Requires less cable length than
    • a star topology.
    • DISADVANTAGE
    • Entire network shuts down if
    • there is a break in the main cable.
    • Terminators are required at both
    • ends of the backbone cable.
    • Difficult to identify the problem
    • if the entire network shuts down.
  • 23. SUMMARY RING TOPOLOGY
    • DEFINITION
    • Cable forms closed ring or loop, with all computers and devices arranged along ring.
    • ADVANTAGE
    • Data is quickly transferred without a ‘bottle neck’.
    • The transmission of data is relatively
    • simple as packets travel in one direction only.
    • DISADVANTAGE
    • Data packets must pass through every computer
    • between the sender and recipient therefore, this makes it slower.
    • If any of the nodes fail then the ring is broken and data cannot be transmitted successfully.
    • It is difficult to troubleshoot
    • the ring.
  • 24. SUMMARY
    • DEFINITION
    • All devices connect to a central device, called hub.
    • ADVANTAGE
    • Easy to install and wire.
    • Security can be implemented
    • in the hub/switch.
    • DISADVANTAGE
    • Requires more cable length
    • than a linear topology.
    If the hub or concentrator fails, nodes attached are disabled. More expensive than linear bus topologies because of the cost of the concentrators. STAR TOPOLOGY
    • Easy to detect faults and to
    • remove parts
  • 25. Thank You !!!! t