16. Which one is not transmission impairment? a) Distortion b) Attenuation c) Signal d) Noise e) None 17. If two signals, which carry data of the same type, interfere each other, then data in one channel embeds into other. This is called: a) Noise b) Crosstalk c) Spectrum d) Attenuation e) None 18. Which one of the followings cannot be improved at a constant temperature? a) Signal-to-noise ratio b) Bandwidth c) Signal power d) Noise Power e) None 19. Which one is a disadvantage of wired communication? a) Is useful only for point to point communication b) Only a small partition of transmitted energy can be received, since energy distributes everywhere c) Useful bandwidth is less than other wireless transmission d) It is requires more complex circuits e) None 21. Which one is used to describe methods that enable transmission of two or more signals with the same transmission system? a) Encoding b) Multiplexing c) Modulating d) Spectrum e) None
16. Which one is not transmission impairment?
a) Distortion b) Attenuation c) Signal d) Noise e) None
17. If two signals, which carry data of the same type, interfere each other, then data in one
channel embeds into other. This is called:
a) Noise b) Crosstalk c) Spectrum d) Attenuation e) None
18. Which one of the followings cannot be improved at a constant temperature?
a) Signal-to-noise ratio b) Bandwidth c) Signal power
d) Noise Power e) None
19. Which one is a disadvantage of wired communication?
a) Is useful only for point to point communication
b) Only a small partition of transmitted energy can be received, since energy distributes
everywhere
c) Useful bandwidth is less than other wireless transmission
d) It is requires more complex circuits
e) None
21. Which one is used to describe methods that enable transmission of two or more signals
with the same transmission system?
a) Encoding b) Multiplexing c) Modulating d) Spectrum e) None
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