All-in-One Guide: Wide Area Network (WAN) Basics
A wide area network (WAN) basically connects two or more local area networks (LAN). While this may sound like a relatively straightforward goal, the implications of WAN connectivity have had a profound influence on networking. It's easy to get WAN connectivity, but selecting the "right" connectivity requires careful consideration of practical issues, such as bandwidth, cost, latency and reliability. This first chapter covers basic WAN information.
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