The throughput of the system on a Slotted Aloha network. All computers on C1 are
ID: 3744512 • Letter: T
Question
The throughput of the system on a Slotted Aloha network.
All computers on C1 are connected to hub H1, and all computers on C2 are connected to hub H2. No computer is located at the intersection of the two circles.The radius of each circle is 50 meters, and the maximum rate of all links is 1 Gbps. The propagation speed in the medium is 2.5×10^8 meters/second.
Assume that the network uses Slotted Aloha, where the length of each timeslot is equal to the transmission time of a single packet. Each computer generates 500 packets per second with each packet being 1000 bytes. What is the throughput of the system if there are 10 computers on the network?
1C2 C11 50 H1 50 H2 50Explanation / Answer
Explaination:
S=G×eG (for Slotted aloha)
500 packets per second = 1/2 packest per millisecond
S = 1/2*(e{-1/2}
S = 0.30325
Throughput = G*S = 1000 * 0.30325 = 303.25 packets per computer
Throughput of 10 computers = 10*303.25 = 3032.5 packets
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