Assignment:
Question 1. Calculate the overhead associated with the following transmission schemes:
a. Asynchronous transmission; 8 data bits, 1 start bit, 1 stop bit
b. Asynchronous transmission; 7 data bits, 1 start bit, 1 stop bit
c. Asynchronous transmission; 7 data bits, 2 start bits, 1 stop bit, 4 bit FCS
d. Synchronous transmission; 1000 bit data field, 8 bit preamble and 8 bit post amble
e. Synchronous transmission; 2000 bit data field, 8 bit preamble and 24 bit post amble.
Question 2. Show a time sequence diagram for the following scenarios:
a. Stop-and-wait ARQ, frames 0,1, and 2 are transmitted successfully and frame 3 is in error and a successful resend of frame 3 occurs.
b. Go-back-N ARQ, frames 0,1,2 and 3 are sent. Frames 0,1, and 3 are received error free. Frame 2 is in error. Show the subsequent error correction.
Provide complete and step by step solution for the question and show calculations and use formulas.