The frequency of the modulated signal is constant for the duration of one signal element, but changes for the next signal element if the data element changes. Both peak amplitude and phase remain constant for all signal elements. This is
A) PSK
B) FSK
C) ASK
D) None of the above
Correct Answer:
Verified
Q15: The physical layer is responsible for
A)line coding
B)channel
Q16: Attenuation means
A)loss of energy
B)change in form or
Q17: If r is the number of data
Q18: NRZ L and NRZ I differ in
A)synchronization
B)transition
C)Both
Q19: Analog to digital conversion can be done
Q21: QAM combines
A)ASK and FSK
B)FSK and PSK
C)ASK and
Q22: Differential Manchester and multi line transmission (MLT-3)
Q23: OSI model defines an open system as
A)a
Q24: 1 TeraHertz =
A)1000000 Hz
B)1000000000 Hz
C)1000000000000 Hz
D)None of
Q25: Shannon capacity formula for noisy channel is
A)C
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