A pure ALOHA network transmits 200-bit frames on a shared channel of 200 kbps. What is the throughput if the system (all stations together) produces 500 frames per second?(a) 146 frames(b) 92 frames(c) 38 frames(d) 156 framesThe question was posed to me in an internship interview.Query is from Layers in portion Cryptography Overview, TCP/IP and Communication Networks of Cryptograph & Network Security

A pure ALOHA network transmits 200-bit frames on a shared channel of 2

1.	A pure ALOHA network transmits 200-bit frames on a shared channel of 200 kbps. What is the throughput if the system (all stations together) produces 500 frames per second?(a) 146 frames(b) 92 frames(c) 38 frames(d) 156 framesThe question was posed to me in an internship interview.Query is from Layers in portion Cryptography Overview, TCP/IP and Communication Networks of Cryptograph & Network Security
Answer» Correct option is (b) 92 frames The explanation: If the SYSTEM CREATES 500 frames per second, or 1/2 frames per millisecond. Then G = 1/2. S = G × e−2G= 0.184 (18.4 percent) This MEANS that Throughput = 500 × 0.184 = 92 Only 92 frames out of 500 will probably survive This is the maximum throughput case, percentage-wise.

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