If r is the number of data elements carried per signal element, N is the data rate, and S is the signal rate, then
A) S= N x r
B) S = N/r
C) N = S x r x r
D) None of the above
Correct Answer:
Verified
Q12: A single channel is shared by multiple
Q13: Wireless transmission can be done via
A)radio waves
B)microwaves
C)infrared
D)all
Q14: In asynchronous serial communication the physical layer
Q15: The physical layer is responsible for
A)line coding
B)channel
Q16: Attenuation means
A)loss of energy
B)change in form or
Q18: NRZ L and NRZ I differ in
A)synchronization
B)transition
C)Both
Q19: Analog to digital conversion can be done
Q20: The frequency of the modulated signal is
Q21: QAM combines
A)ASK and FSK
B)FSK and PSK
C)ASK and
Q22: Differential Manchester and multi line transmission (MLT-3)
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