某分部工程单代号网络计划如下图所示．节点中下方数字为该工作的持续时间（单位：d)，其关键线路有（)

A.Endsystem

B.Protocol

C.Application

D.Throughput

A.Utilizationofspoke-to-spokedynamictunnels

B.UtilizationofmultipointGREtunnelsatthehubsite

C.Utilizationofhub-to-spokedynamictunnels

D.Supportformulticast

A.switchedvirtualcircuit

B.virtualcircuitstatus

C.simpleflowcontrol

D.multicasting

E.permanentvirtualcircuit

A.Smallercompaniesareatlessriskthanlargerenterprises，sotheirsecurityneedsarenotasgreat.

B.Businessstrategyshoulddirectlyrelatetothesecuritypolicyandbudget.

C.ThedesignatedsecurityexpertshouldreporttotheITdepartment，sincethatiswherethesolutionwillbeimplemented.

D.Securityshouldbeacontinuousprocess.

E.Securitysolutionsshouldcomefrommultiplevendorstomakeiteasiertocoordinatesecurityeventsfromthepointoforigin.

A.EBGPv4withasendingcommunity

B.IGPandLDP

C.EBGPv4withasendinglabel

D.IGPandEBGPv4

E.IGPandRSVP

A.Joinedhorizons

B.Packetforwardingloops

C.ciscoExpressForwardingload-balancinginconsistency

D.Asymmetricroutingthroughoutthenetwork

A. telnet access does not require a password

B. nat

C. no broadcast

D. chanage of destination address in the ipv6 header

E. chanage of source address in the ipv6 header

F. autoconfiguration