Glossary
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defaultgateway
The IPaddress of the networkorhost towhich all packetsaddressed to an
unknown networkorhostaresent. The defaultgatewayistypicallyarouteror
otherdevice.
DNS
DomainNameSystem.AprotocolwithinTCP/IPused tofind IPaddressesbased
on hostnames.
field
Alogicalgrouping ofcontiguousbitsthatconveyone kind ofinformation,such as
the startorend ofamessage,an address,data oran errorcheck.
frame
Agroup ofbitswhichformadiscrete block ofinformation.Frames contain network
control information ordata.The size and composition ofaframeisdetermined by
the networktechnologybeing used.
framing types
Twocommonframing typesareEthernetIIandIEEE 802.3.
FTP
FileTransferProtocol.Anetworkingprotocolused to exchange filesbetween
stationson a networkoroverthe Internet.
gateway
Adevicewhichconnectsnetworks with dissimilarnetworkarchitecturesandwhich
operatesat the Application Layer.Thistermmayrefertoarouter.
host
Anode on a network.
hostname
Adomain name given toaspecific computeron a networkand used to address
thatcomputer.
HTTP
HyperTextTransportProtocol.Aprotocolusedto deliverhypertextdocuments.
hub
Adevicewhichconnectsaseriesof flexible and centralized modulestocreate a
network.
ICMP
InternetControlMessage Protocol.AprotocolwithinTCP/IPused toreporterrors
in datagramtransmission.