La3 Mediumnetwork
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La3 Mediumnetwork Presentation Transcript

  • 1. MEDIUM
  • 2. LEARNING OUTCOMES
    • 3.2.2 Medium
    • Identify various types of cables such as Unshielded Twisted Pair (UTP), Shielded Twisted Pair (STP), Coaxial and Fibre Optic Cable.
    • Identify various types of wireless transmission media such as infrared, radio wave and satellite.
  • 3. PHYSICAL TRANSMISSION MEDIA
  • 4. CABLES AS A PHYSICAL TRANSMISSION MEDIUM
    • Cables are used as a physical transmission medium. There are three types of cables used in transmitting electrical messages. They are:
    • Twisted-Pair Cable - Two insulated copper wires that are twisted around each other. Each connection on twisted-pair requires both wires.
    • Coaxial Cable - A cable consisting of a conducting outer metal tube that encloses and is insulated from a central conducting core, used primarily for the transmission of high-frequency signals.
    • Fibre Optic Cable - Glass fibre used for laser transmission of video, audio and/or data.
  • 5. Various types of cables
    • Unshielded Twisted Pair (UTP),
    • Shielded Twisted Pair (STP),
    • Coaxial
    • Fibre Optic Cable.
  • 6. UTP and STP
  • 7. Twisted-Pair Cable
    • - Two insulated copper wires that are twisted around each other. Each connection on twisted-pair requires both wires.
    • Two types of twisted-pair cable
    • 1. STP
    • 2. UTP
  • 8. COAXIAL
  • 9. Coaxial Cable
    • - A cable consisting of a conducting outer metal tube that encloses and is insulated from a central conducting core, used primarily for the transmission of high-frequency signals.
  • 10. FIBRE OPTIC
  • 11. Fibre Optic Cable
    • - Glass fibre used for laser transmission of video, audio and/or data.
  • 12. TRANSMISSION MEDIA
    • TWO BROAD CATEGORIES
    • Physical transmission media
    • 2. Wireless transmission media
  • 13. Physical Transmission media
    • Refers to material substances that can propagate waves and energy.
    • waves are guided along a solid transmission medium.
    • Example
    • 1. connect PC to printer using parallel port or USB port.
    • 2. connect PC to the same phone line for internet.
    • 3. connect PC to PC using untwisted-pair cable
  • 14. Wireless Transmission media
    • Means data communication between network devices without using cables or cord, but by using radio frequency or infrared waves.
    • Method of communication that uses electromagnetic waves rather than wire conductors to transmit data between devices.
    • Waves are unguided and the transmission and reception are by means of antennas.
  • 15. Cont… Wireless Transmission media
    • Wireless data transmission is categorised into short, medium, and long range data transmission.
    • Example:
    • short range – bluetooth, infra red
    • medium range – WiFi or Wireless LAN
    • long range– 3G