主观和客观，认识和实践的统一是（)A．抽象的不变的统一B．具体的历史的统一C．相对的暂时的统一D．绝

A.目的主机地址为192.168.7.30的数据包将被转发到地址192.168.7.9

B.该路由的目的网络地址是192.168.7.9

C.此命令中地址192.168.7.24是下一跳路由器地址

D.此命令是在接口配置模式下发出的

E.此命令用于定义一条静态路由

A.IVR

B.FSPF

C.FICON

D.SANTap

packets travelling through trunk links. When an Ethernet frame traverses a trunk link, a special VLAN tag is added to the frame and sent across the trunk link .How does ERS use the VLAN tag?（）

A. provide service internetworking

B. support transparency for Layer 2 frames

C. indicate destination as a connection identifier

D. map to the DLCI in service internetworking

liance.TheseappliancesshouldconnectdirectlyintoaLayer3switch.AloadbalancerandSSLterminationhavealsobeenrecommended.Potomac’smanagementhaveexpressedconcernoverthecost.Yousuggestusingintegratedblades.Whatisoneadvantageandonedisadvantageofyourdesignproposal？（）

A.Thedatacenterwouldneedseveraldevicestoachieveitsgoal.

B.Increasedusageofstandalonedevicesiscost-effective.

C.Usingintegratedbladeswouldonlyrequiretwodevices.

D.Puttingallsecuritydevicesinasinglechassisprovidesasinglepointoffailure.

A.Layer2

B.Layer3

C.Layer4

D.out-of-band

A.prioritization

B.classification

C.fragmentation

D.trafficshaping

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.