Introduction

There is no doubt that information technologies have become a significant part of our lives, shaping in great measure the way people work, learn, and play. Their rise to prominence was accelerated over the past decade by computer communications. Networked computing devices have proven to be much more than their sum. This concept led to tremendous productivity increases and a plethora of new services that expanded its scope from research communities, to offices, to large corporations, and to the World Wide Web.

Unprecedented engineering innovation rapidly improved networking technologies in lockstep with the fast adoption of computer communications (which naturally require larger, faster, and feature-rich infrastructures). On the other ...

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