关于阶级的说法错误的是()
A.阶级的实质是阶级剥削
B.阶级的存在不是永恒的
C.私有制是阶级产生的前提之一
D.阶级本质上是一种政治关系
第1题
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
第2题
A.Thedatacenterwouldneedseveraldevicestoachieveitsgoal.
B.Increasedusageofstandalonedevicesiscost-effective.
C.Usingintegratedbladeswouldonlyrequiretwodevices.
D.Puttingallsecuritydevicesinasinglechassisprovidesasinglepointoffailure.
第3题
A.Layer2
B.Layer3
C.Layer4
D.out-of-band
第4题
A.prioritization
B.classification
C.fragmentation
D.trafficshaping
第5题
A.one-waylatencyof150msto200ms
B.jitterof30msorless
C.packetlossof2percentorless
D.150bpsofoverheadbandwidth
第6题
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.
第7题
A.ISL
B.VLANTrunk
C.VoQ
D.EnhancedISL
第8题
A.RSVPitselfprovidesbandwidthanddelayguarantees.
B.ForRSVPtobeend-to-end,alldevicesmustsupportRSVP.
C.RSVPreservationsaremaintainedbyacentralizedreservationsserver.
D.AnRSVPcompatibleQoSmechanismmustbeusedtoimplementguaranteesaccordingto RSVP reservations.
第9题
A. bandwidth efficiency
B. cell-switching
C. congestion notification
D. heterogeneous network
第10题
A.supportsmultipleprotocols
B.worksonlyinasharedorloopenvironment
C.allowsaddressingforupto4millionnodes
D.providesahighspeedtransportforSCSIpayloads
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