必然王国与自由王国是社会发展的（)A．两条不同道路B．两种不同工具C．两个不同阶段D．两种不同结果

A.one-waylatencyof150msto200ms

B.jitterof30msorless

C.packetlossof2percentorless

D.150bpsofoverheadbandwidth

A. Neither broadcast nor multicast traffic is ever flooded in VPLS.

B. Multicast traffic is flooded but broadcast traffic is not flooded in VPLS.

C. VPLS emulates an Ethernet switch, with eachEMS being analogous to a VLAN.

D. Because U-PE devices act as IEEE 802.1 devices, the VPLS core must use STP.

E. When the provider experiences an outage, IP re-routing restores PW connectivity and MAC relearning is needed.

ndingstorageenvironments.Bycombiningarobustandflexiblehardwarearchitecturewithmultiplelayersofnetworkandstorage-managementintelligence，theCiscoMDS 9000Serieshelpsyoubuildhighlyavailable，scalablestoragenetworkswithadvancedsecurityandunifiedmanagement.WhatmethoddoestheCiscoMDS9000Seriesusetosupporttrunking？（）

A.ISL

B.VLANTrunk

C.VoQ

D.EnhancedISL

A.RSVPitselfprovidesbandwidthanddelayguarantees.

B.ForRSVPtobeend-to-end，alldevicesmustsupportRSVP.

C.RSVPreservationsaremaintainedbyacentralizedreservationsserver.

D.AnRSVPcompatibleQoSmechanismmustbeusedtoimplementguaranteesaccordingto RSVP reservations.

A. bandwidth efficiency

B. cell-switching

C. congestion notification

D. heterogeneous network

FibreChannel，orFC，isagigabit-speednetworktechnologyprimarilyusedforstoragenetworking.FibreChannelisstandardizedintheT11TechnicalCommitteeoftheInterNationalCommitteeforInformationTechnologyStandards（INCITS），anAmericanNationalStandardsInstitute（ANSI）Caccreditedstandardscommittee.WhichtwoofthesecorrectlydescribeFibreChannel？（）

A.supportsmultipleprotocols

B.worksonlyinasharedorloopenvironment

C.allowsaddressingforupto4millionnodes

D.providesahighspeedtransportforSCSIpayloads

A.79xxIPphonesdonotautomaticallymarkvoicepacketswithnon-zeroDSCPvalues.

B.79xxIPphonesdonotmarkprotocolpacketssuchasDHCP，DNS，orTFTPwithnon-zero DSCPvalues.

C.79xxIPphonesdonotmarkvoicepacketswithoptimalDSCPvalues.

D.79xxIPphonesuseacustomprotocoltocommunicateCDPinformationtotheswitch.

ibre Channel devices enabled by a Fibre Channel switch. Fabrics are normally subdivided by Fibre Channel zoning.Each fabric has a name server and provides other services. Higher redundancy over FC-AL, P2P.Which path selection protocol is used by Fibre Channel fabrics?（）

A.OSPF

B.RIP

C.FSPF

D.VSANs

VLANTagging，alsoknownasFrameTagging，isamethoddevelopedbyCiscotohelpidentify packetstravellingthroughtrunklinks.WhenanEthernetframetraversesatrunklink，aspecial VLANtagisaddedtotheframeandsentacrossthetrunklink.HowdoesERSusetheVLANtag？（）

A.provideserviceinternetworking

B.supporttransparencyforLayer2frames

C.indicatedestinationasaconnectionidentifier

D.maptotheDLCIinserviceinternetworking

ance Agent contained in Cisco IOS. Which CiscoWorks network management application will be used to report the latency and availability for configured traffic operations on an end-to-end and hop-byhop (router-to-router) basis?（）

A. nGenius Real-Time Monitor

B. CiscoView

C. Device Fault Manager

D. Internetwork Performance Monitor