Editing Network congestion (section)

==Network capacity==
Network resources are limited, including [[Router (computing)|router]] processing time and link [[throughput]]. [[Resource contention]] may occur on networks in several common circumstances. A [[wireless LAN]] is easily filled by a single personal computer.<ref>den Hartog, F., Raschella, A., Bouhafs, F., Kempker, P., Boltjes, B., & Seyedebrahimi, M. (2017, November). [http://unsworks.unsw.edu.au/fapi/datastream/unsworks:50254/bin458a10d9-f568-479c-a9b5-5c185ef64e78?view=true A Pathway to solving the Wi-Fi Tragedy of the Commons in apartment blocks]. In 2017 27th International Telecommunication Networks and Applications Conference (ITNAC) (pp. 1-6). IEEE.</ref> Even on fast computer networks, the [[Backbone network|backbone]] can easily be congested by a few servers and client PCs. [[Denial-of-service attack]]s by [[botnet]]s are capable of filling even the largest [[Internet backbone]] network links, generating large-scale network congestion. In telephone networks, a [[mass call event]] can overwhelm digital telephone circuits, in what can otherwise be defined as a denial-of-service attack.