Types of Transmission media
Illustrate the various types of Transmission media? Describe in brief.
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Signals are generally transmitted over some transmission media which are broadly categorized in two categories.
a) Guided Media: These are those which give a conduit from one device to the other which comprise twisted-pair, coaxial cable and the fiber-optic cable. The signal traveling all along any of such media is directed and is contained by the physical limits of the medium. Twisted-pair and coaxial cable use metallic which accept and transport signals in the form of electrical current. Optical fiber is a glass or plastic cable which accepts and transports signals in form of light.
b) Unguided Media: This is the wireless media which transport electromagnetic waves devoid of by using a physical conductor. Signals are broadcast either via air. This is done via radio communication, satellite communication and cellular telephony.
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