9. An entities that conveys
meaning.
a.Signal
b.Information
c.Data
d.Network
10. The _____________ is caused by the strength of signal that degrades
with distance over a transmission link.
•Signal barrier
•Transmission impairment
•Noise
•Detortion
11-13.) give the three transmission
impairments
14.-15.) what are the two functions
of signal.
16.-18) enumerate the three context
of data communication.
18-20) give two examples of guided
media.