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How can you determine what the Internet or even an intranet looks like? The answer is, of course, to draw it on screen. Once you can see the data succinctly, it becomes much easier to understand. The drawing itself can help locate bottlenecks and possible points of failure. Where is that newly acquired subsidiary connected? Which business units have connections to business partners? More important, visual displays of networks have another dimension-color. Color is an easy way to display link use, status, ownership, and network changes.
Burch et al. (Thu,) studied this question.