Question

Five routers are to be connected in a point-to-point subnet. Between each pair of routers, the designers may put a high-speed line, a medium-speed line, a low-speed line, or no line. If it takes 100 ms of computer time to generate and inspect each topology, how long will it take to inspect all of them

Answer 1

Answer:

Thus, there will be 10 potential lines: AB, AC, AD, AE, BC, BD, BE, CD, CE and DE. Each of these potential lines has 4 possibilities. Therefore, the total number of topologies is 4¹⁰=1,048,576.

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