A network with bandwidth of 10 Mbps can pass only an average of 15,000 frames…
2015
A network with bandwidth of 10 Mbps can pass only an average of 15,000 frames per minute with each frame carrying an average of 8,000 bits. What is the throughput of this network ?
- A.
2 Mbps
- B.
60 Mbps
- C.
120 Mbps
- D.
10 Mbps
Attempted by 650 students.
Show answer & explanation
Correct answer: A
Solution:
Throughput = (number of frames × bits per frame) ÷ time
Calculate total bits per minute: 15,000 frames/min × 8,000 bits/frame = 120,000,000 bits/min.
Convert to bits per second: 120,000,000 ÷ 60 = 2,000,000 bits/s.
Convert to megabits per second: 2,000,000 ÷ 1,000,000 = 2 Mbps.
Therefore the throughput of the network is 2 Mbps.
Why the other numeric choices are incorrect:
60 Mbps and 120 Mbps do not match the calculated bits per second and exceed the network capacity given; they reflect common unit-conversion or interpretation errors.
10 Mbps is the link's maximum bandwidth, but actual throughput depends on the frames passed; using the given frame rate and size gives a throughput lower than 10 Mbps (specifically 2 Mbps).