1.

Explain the two modes of long distance communication.

Answer»

SOLUTION :The two hasic MODES of long distancecommunication are
(1) point-to-point or guided or line communication
(2) unguided or space communication, called BROADCAST.
Line communication is a transmission system in a FIXED (land-hased) telecommunioation network that uses transmission Lines as a communication channel.
Space commumication is a transmission system in a fixed (land-based) as well as mobile (maritime, aeronautical abd land-based) telecommunications network that uses the physical space surrounding us as the communication channel. Space communication is via radio waves in CERTAIN internationally agreed frequency bands.


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