对于地下建筑及水工构筑物，因经常受到压力水的作用，要求材料具有一定的（)。A．抗渗性B．抗冻性C．耐

A.showframe-relaymap

B.showframe-relaylmi

C.showinterserial

D.showframe-relaypvc

A.24

B.4

C.3

D.16

A.B514：82C3：0029：：EC7A：0000：EC72

B.B514：82C3：0029：EC7A：EC72

C.B514：82C3：：0029：EC7A：0：EC72

D.B514：82C3：：0029：EC7A：EC72

A.Allowuserstodeveloptheirownapproachtonetworksecurity.

B.Physicallysecurenetworkequipmentfrompotentialaccessbyunauthorizedindividuals.

C.Encourageuserstousepersonalinformationintheirpasswordstominimizethelikelihoodofpasswordsbeingforgotten.

D.Delaydeploymentofsoftwarepatchesandupdatesuntiltheireffectonend-userequipmentiswellknownandwidelyreported.

E.Minimizenetworkoverheadbydeactivatingautomaticantivirusclientupdates.

A.Ithasthesamemaximumhopcountasversion1.

B.Itusesbroadcastsforitsroutingupdates.

C.Itisaclasslessroutingprotocol.

D.IthasalowerdefaultadministrativedistancethanRIPversion1.

E.Itsupportsauthentication.

F.Itdoesnotsendthesubnetmaskinupdates.

A.A CSU/DSU terminates a digital local loop

B.A modem terminates a digital local loop

C.A CSU/DSU terminates an analog local loop

D.A modem terminates an analog local loop

E.A router is commonly considered a DTE device

F.A router is commonly considered a DCE device

A.115.64.8.32

B.115.64.7.64

C.115.64.6.255

D.115.64.3.255

E.115.64.5.128

F.115.64.12.128

A.can be used over analog circuits

B.maps Layer 2 to Layer 3 address

C.encapsulates several routed protocols

D.supports IP only

E.provides error correction

A.staticallymapIPV4addresstoIPV6addresses

B.configurationIPv4tunnelsbetweenIPV6islands

C.useDHCPv6tomapIPV4addressestoIPV6addresses

D.useproxyingandtranslationtotranslateIPV6packetsintoIPV4packets

E.configureIPV6directly

F.enabledual-stackrouting

A.Itestablishesastaticroutetothe172.16.3.0network.

B.Itestablishesastaticroutetothe192.168.2.0network.

C.Itconfigurestheroutertosendanytrafficforanunknowndestinationtothe172.16.3.0network.

D.Itconfigurestheroutertosendanytrafficforanunknowndestinationouttheinterfacewiththeaddress192.168.2.4.

E.Itusesthedefaultadministrativedistance.

F.Itisaroutethatwouldbeusedlastifotherroutestothesamedestinationexist.