In a Token ring network a transmission speed is 107 bps and propagation speed…
2024
In a Token ring network a transmission speed is 107 bps and propagation speed is 200 m/μs. The 1-bit delay in a network is equivalent to —----------.
- A.
20 ms
- B.
30 ms
- C.
50 ms
- D.
40 ms
Attempted by 211 students.
Show answer & explanation
Correct answer: A
Key idea: find the time to transmit one bit and multiply by the propagation speed to get the distance corresponding to the 1-bit delay.
Step 1: Transmission speed = 10^7 bits/s, so time for 1 bit = 1 / 10^7 s = 1e-7 s = 0.1 μs.
Step 2: Propagation speed = 200 m/μs. Distance traveled in 0.1 μs = 200 m/μs × 0.1 μs = 20 m.
Conclusion: The 1-bit delay corresponds to 20 meters. (If answer choices show "ms", that is a unit error; the correct magnitude here is 20 meters.)