Data Communication Quiz | Data Communication MCQs and Answers

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Questions
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

Answer: low-pass
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

Answer: P2 equals P1
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83 ________is the rate of change with respect to time.
A Time
B Frequency
C Amplitude
D Voltage

Answer: Frequency
84 _________ can impair a signal.
A Noise
B Attenuation
C Distortion
D All of the above

Answer: 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

Answer: -2
86 The _________ layer enables the users to access the network.
A application
B physical
C data link
D transport

Answer: application
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

Answer: transport
88 The_____ address identifies a process on a host.
A specific
B port
C IP
D physical

Answer: port
89 IPv6 has _______ -bit addresses.
A 128
B 32
C 64
D variable

Answer: 128

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