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IV‐4. Glossary
DefaultGateway(Wirelessbridge):Everynon‐accesspointIPdeviceneedsto
configureadefaultgateway’sIPaddress.WhenthedevicesendsoutanIP
packet,ifthedestinationisnotonthesamenetwork,thedevicehastosend
thepackettoitsdefaultgateway,which
willthensenditouttowardsthe
destination.
DHCP:DynamicHostConfigurationProtocol.Thisprotocolautomaticallygives
everycomputeronyourhomenetworkanIPaddress.
DNSServerIPAddress:DNSstandsforDomainNameSystem,whichallows
Internetserverstohaveadomainname(suchaswww.Broadbandaccess
point.com)andone
ormoreIPaddresses(suchas192.34.45.8).ADNSserver
keepsadatabaseofInternetserversandtheirrespectivedomainnamesand
IPaddresses,sothatwhenadomainnameisrequested(asintyping
"Broadbandaccesspoint.com"intoyourInternetbrowser),theuserissentto
theproperIPaddress.
TheDNSserverIPaddressusedbythecomputerson
yourhomenetworkisthelocationoftheDNSserveryourISPhasassignedto
you.
DSLModem:DSLstandsforDigitalSubscriberLine.ADSLmodemusesyour
existingphonelinestotransmitdataathighspeeds.
Ethernet:A
standardforcomputernetworks.Ethernetnetworksare
connectedbyspecialcablesandhubs,andmovedataaroundatupto10/100
millionbitspersecond(Mbps).
IPAddressandNetwork(Subnet)Mask:IPstandsforInternetProtocol.AnIP
addressconsistsofaseriesoffournumbersseparatedbyperiods,
that
identifiesasingle,uniqueInternetcomputerhostinanIPnetwork.Example:
192.168.2.1.Itconsistsof2portions:theIPnetworkaddress,andthehost
identifier.
TheIPaddressisa32‐bitbinarypattern,whichcanberepresentedasfour
cascadeddecimalnumbersseparatedby“.”:aaa.aaa.aaa.aaa,whereeach
“aaa”canbeanythingfrom000to255,orasfourcascadedbinarynumbers
separatedby“.”:bbbbbbbb.bbbbbbbb.bbbbbbbb.bbbbbbbb,whereeach“b”
caneitherbe0or1.