Chapter: Computer Networks : Physical Layer
Transmission media
Transmission media are actually located below the physical layer and are directly controlled by the physical layer.
Transmission media:
Transmission
media are actually located below the physical layer and are directly controlled
by the physical layer. Figure 1.26 shows the position of transmission media in
relation to the physical layer.
A transmission medium can be broadly defined as anything that can carry
information from a source to a destination.
In
telecommunications, transmission media can be divided into two broad
categories: guided and unguided. Guided media include twisted-pair cable,
coaxial cable, and fiber-optic cable. Unguided medium is free space.
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Computer Networks : Physical Layer