GATE | GATE IT 2005 | Question 71
A network with CSMA/CD protocol in the MAC layer is running at 1 Gbps over a 1 km cable with no repeaters. The signal speed in the cable is 2 x 108 m/sec. The minimum frame size for this network should be
(A)
10000 bits
(B)
10000 bytes
(C)
5000 bits
(D)
5000 bytes
Answer: (A)
Explanation:
Frame Size S >= 2BL/P
Where,
Cable Length L = 1KM = 1000M
Propagation Speed P = 2 x 10^8 m/sec
Bandwidth = 1 Gbps = 10^9 bps
See this for details of above formula.
S >= (2 * 10^9 * 1000) / (2 x 10^8)
>= 10000 bits
Quiz of this Question
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Last Updated :
02 Nov, 2022
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