NRZ L and NRZ I differ in
synchronization and transition
Well Done. You are good Data Communication Engineer ! Your Answer is Correct Keep it Up!
transition
Both
None of the Option is Correct
Category: Computer Science
If r is the number of data elements carried per signal element, N is the data rate, and S isthe signal rate, then
If r is the number of data elements carried per signal element, N is the data rate, and S isthe signal rate, then
S = N/r
Well Done. You are good Data Communication Engineer ! Your Answer is Correct Keep it Up!
S= N x r
N = S x r x r
None of the Option is Correct
The physical layer is responsible for
The physical layer is responsible for
All Options are Correct
Well Done. You are good Data Communication Engineer ! Your Answer is Correct Keep it Up!
modulation
channel coding
line coding
Attenuation means
Attenuation means
loss of energy
Well Done. You are good Data Communication Engineer ! Your Answer is Correct Keep it Up!
change in form or shape of a signal
crosstalk
difference in frequency
In asynchronous serial communication the physical layer provides
In asynchronous serial communication the physical layer provides
start, stop signaling and flow control
Well Done. You are good Data Communication Engineer ! Your Answer is Correct Keep it Up!
flow control
Both
None of the Option is Correct
Wireless transmission can be done via
Wireless transmission can be done via
All Options are Correct
Well Done. You are good Data Communication Engineer ! Your Answer is Correct Keep it Up!
infrared
microwaves
radio waves
A single channel is shared by multiple signals by
A single channel is shared by multiple signals by
multiplexing
Well Done. You are good Data Communication Engineer ! Your Answer is Correct Keep it Up!
digital modulation
analog modulation
None of the Option is Correct
The physical layer translates logical communication requests from the ______ intohardware specific operations.
The physical layer translates logical communication requests from the ______ intohardware specific operations.
data link layer
Well Done. You are good Data Communication Engineer ! Your Answer is Correct Keep it Up!
network layer
trasnport layer
application layer
Physical layer provides
Physical layer provides
All Options are Correct
Well Done. You are good Data Communication Engineer ! Your Answer is Correct Keep it Up!
specification for IR over optical fiber
electrical specification of transmission line signal level
mechanical specifications of electrical connectors and cables
Shannon capacity formula for noisy channel is
Shannon capacity formula for noisy channel is
C = B Log (1 + SNR)
Well Done. You are good Data Communication Engineer ! Your Answer is Correct Keep it Up!
C = B Log (1/SNR)
C = B Log (SNR)
None of the Option is Correct