La3 Mediumnetwork

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La3 Mediumnetwork

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

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