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2017年下半年系统规划与管理师英语题
2017年下半年系统规划与管理师英语题
●Typically,anIPaddressreferstoanindividualhostonaparticularnetwork.IPalso
accommodatesaddressesthatrefertoagroupofhostsononeormorenetworks.Such
Such
addressesarereferredtoasmulticastaddresses,andtheactofsendingapacketfromasource
tothemembersofa（71）groupisreferredtoasmulticasting.Multicastingdone（72）the
scopeofasingleLANsegmentisstraightforward.IEEE802andotherLANprotocolsinclude
provisionforMAC-levelmulticastaddresses.Apacketwithamulticastaddressistransmitted
onaLANSegment.Thosestationsthataremembersofthe（73）multicastgrouprecognize
themulticastaddressand（74）thepacket.Inthiscase,onlyasinglecopyofthepacketis
evertransmitted.Thistechniqueworksbecauseofthe（75）natureofaLAN:Atransmission
fromanyonestationisreceivedbyallotherstationontheLAN.
D.multicast
A.NumerousB.onlyC.singleD.multicast
A.NumerousBoC.singe
A.WithinB.outofC.beyondD.cover
A.withinB.outofC.beyond
D.cover
A.DifferentB.uniqueC.specialD.corresponding
A.DifferentD.corresponding
C.special
Bmige
D.transmit
A.RejectB.acceptC.discardD.transmit
A.RejectBacce体C.dsard
A.MulticastB.unicastC.broadcastD.multipleunicast
A.Muticast
B
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