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Contention in a wireless or noisy spectrum, where the physical medium is entirely out of the control of those who specify the protocol, requires measures that also use up throughput. Wireless devices, BPL, and modems may produce a higher line rate or gross bit rate, due to error-correcting codes and other physical layer overhead. It is ...
Line Printer Daemon (LPD), [11] print service 517: Yes: Talk: 518: Yes: NTalk 520 Yes: efs, extended file name server Yes: Routing Information Protocol (RIP) 521: Yes: Routing Information Protocol Next Generation (RIPng) 524: Yes: NetWare Core Protocol (NCP) is used for a variety things such as access to primary NetWare server resources, Time ...
Wireless LAN (WLAN) channels are frequently accessed using IEEE 802.11 protocols. The 802.11 standard provides several radio frequency bands for use in Wi-Fi communications, each divided into a multitude of channels numbered at 5 MHz spacing (except in the 45/60 GHz band, where they are 0.54/1.08/2.16 GHz apart) between the centre frequency of the channel.