Gate CS-2012 Question Paper With Solutions

Q. 44 Consider a source computer (S) transmitting a file of size 108 bits 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 1 Mbps.
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?

(A) 1005ms

(B) 1010 ms

(C) 3000 ms

(D) 3003ms

Answer: (A)


Gate CS-2012 Question Paper With Solutions

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