R=transmission rate
S=signal speed
D=Distance between sender and receiver
T=time to create one frame
F=number of bits in a frame
N=number of data bits in a frame
A=number of bits in an acknowledgement
F>N
Q.1 Calculate the channel utilization
My take: (F/R) / (F/R + 2*D/S + A/R + 2*T)
Q.2 Calculate the effective data rate.
My take: ( (F/R) / (F/R + 2*D/S + A/R + 2*T) ) * (N/F)
