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DIGICOMM : TRANSMISSION
Quiz by Serapion, Mecaella B.
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It refers to the process of sending digital or analog data from one device to another using transmission media such as cables or wireless signals in computer networks. Data transmission ensures communication between devices, routers and servers.
exchange of data between devices via a transmission medium
the capacity of a channel to transmit data (measured in bits per second)
Time delay in transmitting data from source to destination
actual data transfer rate achieve after considering network overhead
Number of bits transmitted per second
number of signal changes or symbol per second
Transmission media is the physical medium through which data is transmitted from one device to another within a network.
This media can be wired or wireless.
The choice of medium depends on factors like distance speed and interference .
Also known as wired or bounded transmission media
Signals are transmitted confined in a narrow pathway by using physical links
Features:
High Speed
Secure
Used for comparatively shorter distance
A communication cable containing two insulated copper wire twisted together
To eliminate noise created by electromagnetic interference from external source
To minimize signal leaking from adjacent wire or cross stock between pairs improving signal quality
Has an outer plastic covering containing an insulation layer made of pvc or teflon and two parallel conductors each having a separate insulated protection cover
Uses the concept of total internal reflection of light through a core made up of glass.
The core is surrounded by a less dense glass or plastic covering called the coating
it is used for the transmission of large volumes of data
Is a transverse electromagnetic transmission line medium invented by Robert M Barrett of the Air Force Cambridge Research centre in the 1950
It is the earliest form of the planar transmission line
It uses a conducting material to transmit high frequency waves it is also called a wave guide
This conducting material is sandwiched between two layers of the ground plane which are usually shorted to provide EMI immunity.
It is a type of transmission media used to carry high frequency signals commonly found in microwave and radio frequencies circuits.
It consists of a flat narrow conducting strip (usually made of metal) placed on top of a dielectric material (an insulating layer) with a metal ground plane on the other side.