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Networking

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Transcript

  • 1. Twisted Pair Cable
    Coaxial Cable
    Fiber Optic
    Cable/Wired Media
  • 2. Transmission media
    The means through which data is transmitted from one place to another is called transmission or communication media.
    There are two categories of transmission media used in computer communications.
  • 3. 1. Bounded media/wired media
    Bounded media are the physical links through which signals are confined to a narrow path. They are great for LABS because they offer high speed, good security and low cast. Three common types of bounded media are used of the data transmission. These are:
    Coaxial Cable
    Twisted Pairs Cable
    Fiber optics cable
  • 4. Coaxial cable:
    Copper Mesh
    Coaxial cable is the kind of copper cable used by cable TV companies between the community antenna and user homes and businesses. Coaxial cable is sometimes used by telephone companies from their central office to the telephone poles near users.
    Outside Insulation
    Insulation
    Copper Wire
  • 5. Coaxial Cable
    Advantages coaxial cable
    Disadvantage coaxial cable
    Easy to wire
    Easy to expand
    Inexpensive
    Single cable failure can take down an entire network
  • 6. Twisted Pair Cable
    Twisted Pair Cable
    The most popular network cabling is Twisted pair. It is light weight, easy to install, inexpensive and support many different types of network.
    There are two types of twisted pairs cabling: They are:
    1. Unshielded twisted pair (UTP)
    2. Shielded twisted pair (STP)
  • 7. Unshielded twisted pair (UTP)
    UTP is more common. UTP cables consist of 2 or 4 pairs of twisted cable.
    Twisted Pair
    Outer Jacket
    Colour coded plastic installation
  • 8. UTP
    Advantages of UTP
    Disadvantages of UTP
    Easy installation
    Capable of high speed for LAN
    Low cost
    It may be prone to radio and electrical frequency interference (it should not be too close to electric motors, fluorescent lights, etc.).
  • 9. Shielded twisted pair (STP)
    It is similar to UTP but has a mesh shielding that’s protects it from EMI which allows for higher transmission rate
    Twisted Pair
    Outer Jacket
    Overall Shield
    Pair shield
  • 10. STP
    If you must place cable in environments with lots of potential interference, or if you must place cable in extremely sensitive environments that may be susceptible to the electrical current in the UTP, shielded twisted pair may be the solution. Shielded cables can also help to extend the maximum distance of the cables.
  • 11. Shielded Twisted Pair
    Advantages of STP:
    Disadvantages of STP:
    Shielded
    Faster than UTP and coaxial
    More expensive than UTP and coaxial
    More difficult installation
  • 12. Fiber Optic
    Fiber optic cabling consists of a center glass core surrounded by several layers of protective materials (See fig. 5). It transmits light rather than electronic signals eliminating the problem of electrical interference. This makes it ideal for certain environments that contain a large amount of electrical interference.
  • 13. Fiber Optic
    Advantages Of Fiber Optic
    Disadvantages Fiber Optics
    Fast transmission of data
    Low attenuation
    No EMI interference
    Very costly
    Hard to install
  • 14. THE END