A slotted ALOHA network transmits 200-bit frames using a shared channel with a 200 Kbps bandwidth. Find the throughput of the system, if the system (all stations put together) produces 250 frames per second :
Pick an option to check yourself, or open the answer below.
Show answer & explanation
Correct answer: A. 49
Explanation
Frame time = 200 bits / 200 kbps = 1 ms, so G = 250 × 1 ms = 0.25. S = G·e^(−G) = 0.25 × 0.78 ≈ 0.195, so about 0.195 × 250 ≈ 49 frames per second succeed.
More Data Communication and Computer Networks questions
- The period of a signal is 100 ms. Its frequency is _________.
- The dotted-decimal notation of the following IPV4 address in binary notation is _________.10000001 00001011 00001011 11101111
- Which of the following statements are true ? (a) Advanced Mobile Phone System (AMPS) is a second generation cellular phone system. (b) IS -…
- Match the following symmetric block ciphers with corresponding block and key sizes :
- Which of the following statements is/are true? (a) Three broad categories of Networks are (i) Circuit Switched Networks (ii) Packet Switche…
- In Challenge-Response authentication the claimant ________.