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GATE Computer Science (CS) 2012 Solved Paper

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Question : 54

Total: 65

Consider a source computer (S) transmitting a file of size 10⁶bits to a destination computer (D) over a network of two routers (R₁ and R₂) and three links (L₁, L₂, and L₃). L₁ connects S to R₁; L₂ connects R₁ to R₂; and L₃ connects R₂ to D. Let each link be of length 100 km. Assume signals travel over each link at a speed of 10⁸ meters per second. Assume that the link bandwidth on each link is 1Mbps. Let the file be broken down into 1000 packets each of size 1000 bits. Find the total sum of transmission and propagation delays in transmitting the file from S to D?

1005 ms
1010 ms
3000 ms
3003 ms

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