Air 802 Linux USB?ADG?2 Specifikace stáhnout pdf (Strana 27)

APPENDIXA:GLOSSARY

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802.11–TheInstituteofElectricalandElectronicEngineers(IEEE)hascreatedanumberof

wirelessstandards.Thishelpstoinsurethatproductsbuilttocomplywithaspecificstandard

areinteroperablewithoneanotherevenifmanufacturedbydifferentcompanies.

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802.11b–Specifiesamaximumdatatransferrateof11Mbps,anoperatingfrequencyof2.4

GHz,andWEPencrypionforsecurity.CommonlyreferredtoasWi‐Fi.

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802.11g–Specifiesamaximumdatatransferrateof54Mbps,anoperatingfrequencyof2.4

GHzandisbackwardscompatiblewith802.11b.CommonlyreferredtoasWi‐Fi.

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AccessPoint–Aninterworkingdevicethatseamlesslyconnnectswiredandwirelessnetworks

together.

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Ad‐Hoc–AnAd‐HocwirelessLANisagroupofcomputers,eachwithaWLANcard,connected

asanindependentwirelessLAN.Ad‐HocwirelessLANisapplicableatadepartmentalscalefor

branchSOHOoperation.

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BSS–BasicServiceSetisan802.11interworkingframeworkthatincludesanAccessPoint.

ComputersinaBSSmustbeconfiguredwiththesameBSSID.

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CTS(CleartoSend)–AnRS‐232signalsentfromthereceivingstationtothetransmitting

stationthatindicatesisisreadytoacceptdata.

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Client–AworkstationorPConanetwork.

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DefaultGateway–TheIPAddressofeitherthenearestrouterorserverfortheLAN.

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DHCP–DynamicHostConfigurationProtocolisamethodinwhichIPaddressesareassigned

fromapoolofIPaddressesbyaserverdynamicallytoclientsonthenetwork.DHCPisusedfor

DynamicIPAddressingandrequiresadedicatedDHCPserveronthenetwork.

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DNS–DomainNameSystemisusedtomapreadablemachinenames(Internetdomainnames)

intoIPaddresses.

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DSSS–DirectSequenceSpreadSpectrumisamethodthewirelesscardsusetotransmitdata

overthefrequencyspectrum.Theothermethodisfrequencyhopping.Directsequencespreads

thedataoveronefrequencyrange(channel)whilefrequencyhoppingjumpsfromonenarrow

frequencybandtoanothermanytimespersecond.

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Air 802 Linux USB?ADG?2 Specifikace Strana 27