Summary
For certain applications, wired LANs—of which the canonical example is Ethernet—will always be superior to WLANs if the only means of comparison were raw throughput. For one thing, the wired LAN is much more resistant to radio-frequency (RF) interference, which is a major factor that can affect WLAN throughput. Twisted-pair wiring is extremely immune to RF interference.[24] The highest-performance wired LANs are based on optical fiber and are the most resistant to both electrical and RF interference. Moreover, any advances in data modulation techniques can be applied equally well to both wired and wireless media.
[24] However, the fact that there is still an electrical connection between two devices means that one device can still interfere ...
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