Five equal-size datagrams belonging to the same message leave for the destination one after another. However, they travel through different paths as shown in Table 8.1.

We assume that the delay for each switch (including waiting and processing) is 3, 10, 20, 7, and 20 ms respectively. Assuming that the propagation speed is 2 × 10⁸ m, find the order the datagrams arrive at the destination and the delay for each. Ignore any other delays in transmission.

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Path Length Visited Switches 1, 3, 5 1, 2, 5 1, 2, 3, 5 1, 4, 5 1,4, 3, 5 Datagram 1 3200 km 11,700 km 12,200 km 10,200 km 10,700 km 3 4