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Free download in PDF Data Communication MCQs and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams. These short solved questions or quizzes are provided by Gkseries.
81
Baseband transmission of a digital signal is possible only if we have a ____ channel.
[A]
bandpass
[B]
low-pass
[C]
high rate
[D]
low rate
82
A signal is measured at two different points. The power is P1 at the first point and P2 at the second point. The dB is 0. This means ________.
[A]
P2 equals P1
[B]
P2 is zero
[C]
P2 is much larger than P1
[D]
P2 is much smaller than P1
83
________is the rate of change with respect to time.
[A]
Time
[B]
Frequency
[C]
Amplitude
[D]
Voltage
84
_________ can impair a signal.
[A]
Noise
[B]
Attenuation
[C]
Distortion
[D]
All of the above
85
If the maximum amplitude of a sine wave is 2 V, the minimum amplitude is ________ V.
[A]
2
[B]
1
[C]
-2
[D]
None of the above
86
The _________ layer enables the users to access the network.
[A]
application
[B]
physical
[C]
data link
[D]
transport
87
The_________ layer is responsible for the delivery of a message from one process to another.
[A]
transport
[B]
network
[C]
physical
[D]
none of the above
88
The_____ address identifies a process on a host.
[A]
specific
[B]
port
[C]
IP
[D]
physical
89
IPv6 has _______ -bit addresses.
[A]
128
[B]
32
[C]
64
[D]
variable
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