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Communication medium for computers...

Communication medium for computers...

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  • 1. COMPUTER NETWORK
    Submitted By
    Gaurav Gupta
    IILM- Business School
    MBA July 2011
    Wednesday, July 06, 2011
    1
  • 2. What is Computer Networking ?
    A computer network is a collection of computers and devices interconnected by communications channels(wire & wireless)
    Purpose—To facilitate communications and allow sharing of resources and information among interconnected devices
    Wednesday, July 06, 2011
    2
  • 3. COMMUNICATION MEDIUM
    Wednesday, July 06, 2011
    3
    Wired Communication Medium
    Wireless Communication Medium
  • 4. WIRED COMMUNICATION
    Wednesday, July 06, 2011
    4
  • 5. WIRELESS TECHNOLOGIES
    TERRESTRIAL MICROWAVE – Terrestrial microwaves use Earth-based transmitter and receiver, like BTS(Base Trans-receiver Station)
    Wednesday, July 06, 2011
    5
  • 6. WIRELESS TECHNOLOGIES
    Communications satellites -- The satellites are stationed in space, typically 35,400 km (22,200 miles) (for geosynchronous satellites) above the equator. These Earth-orbiting systems are capable of receiving and relaying voice, data, and TV signals
    Wednesday, July 06, 2011
    6
  • 7. WIRELESS TECHNOLOGIES
    Wireless LANs – Wireless local area network use a high-frequency radio technology similar to digital cellular
    Wednesday, July 06, 2011
    7
  • 8. WIRELESS TECHNOLOGIES
    A global area network (GAN) is a network used for supporting mobile communications across an arbitrary number of wireless LANs, satellite coverage areas, etc. The key challenge in mobile communications is handing off the user communications from one local coverage area to the next
    Wednesday, July 06, 2011
    8
  • 9. NETWORKS CLASSIFIED BY THEIR PHYSICAL OR ORGANIZATIONAL EXTENT
    Local area network (LAN),
    Wide area network (WAN),
    Metropolitan area network (MAN),
    Personal area network (PAN),
    Virtual private network (VPN),
    Campus area network (CAN),
    Storage area network (SAN),
    Controller area network (CAN).
    Wednesday, July 06, 2011
    9
  • 10. VPN (Virtual Private Network)
    Share Brokerage Firm
    Wednesday, July 06, 2011
    10
  • 11. Wednesday, July 06, 2011
    11