从从业人数上看，工业企业在该县第二产业中的比重为（)。A．15.06%B．45.50%C．71.18%D．92.89%

A.5

B.10

C.14

D.20

A.Layer1intercontrollerroaming

B.Layer2intercontrollerroaming

C.Layer3intercontrollerroaming

D.Layer4intercontrollerroaming

A.RIPv1

B.RIPv2

C.EIGRP

D.OSPF

quarterslocatedinHouston，Texas.Thecampusthereismadeupofanumberofofficebuildingslocatedwithinthesamevicinity.In2003，anewbuilding.

Building331Bwasadded.Theadditionalbuildinghousesapproximately1000employees.Ratherthandeployaprivatebranchexchange（PBX）inthenewbuilding，SunStablehasdecidedtoimplementanIPtelephonysolution.ExternalcallswillbecarriedacrossaMANlinktoanotherbuilding，whereagatewayconnectsintotheworldwidePBXnetworkofSunStable.VoicemailandunifiedmessagingcomponentsarerequiredandallIPphonesandworkstationsshouldbeon separateVLANsandIPsubnets.

ActualTests.comWhichIPtelephonydeploymentbestsuitstheirneed？（）

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.允许通过图形界面配置路由器。

B.允许建立到路由器命令行界面的安全远程连接。

C.允许通过网络管理应用程序监控路由器。

D.允许通过不安全的工作站或服务器安全传输IOS软件映像。

A.

B.

C.

D.

than standard serial and parallel ports. In addition, you can attach many devices to a single SCSI port, so that SCSI is really an I/O bus rather than simply an interface Which two statements about SCSI are true?（）

A. The bus is limited to 64 devices.

B. It is a full-duplex serial standard.

C. It is a half-duplex serial standard.

D. It allows up to 320 MB/s of shared channel bandwidth.

A.DiffServ

B.IntServ

C.RSVP

D.WFQ

A.multicastroutingusesRPF

B.multicastroutingisconnectionless.

C.Inmulticastrouting，thesourceofapacketisknown.

D.Whennetworktopologieschange，multicastdistributiontreesarenotrebuilt，butusetheoriginalpath

E.Multicastroutingismuchlikeunicastrouting，withtheonlydifferencebeingthatithasaagroupofreceiversratherthanjustonedestination