HCDP英文版最新单选试题.docx
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HCDP英文版最新单选试题.docx
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HCDP英文版最新单选试题
1.whatisthemaximumbitsofaclasscaddresscanbeusedforsubnet?
A6
B8
C12
D14
A
2.whatisthefunctionofthepeerignorecommand?
AdeletesaBGPpeer
Bretainsallconfigurationsofthepeer,andmaintainstheBGPpeerrelationshipwiththepeer,butdoesnotreceivetheroutessentfromthepeer.
Cretainsallconfigurationsofthepeer,andmaintainstheBGPpeerrelationshipwiththepeer,butdoesnotadvertiseroutestothepeer.
Dretainsallconfigurationsofthepeer,interruptstheBGPpeerrelationshipwiththepeer,andclearsallrelatedroutinginformation.
D
3.whichfollowingBGPattributecanusedtodefineasetofprefixeswiththesamecharacteristics?
AOrigin
BNexthop
CCommunity
DMED
C
4.whichofthefollowingcharacterstringsmatchestheregularexpression100$?
A3100
B100
C1008
D100200
B
5.____INIPv4,whichofthefollowingistheSSMaddressrangeallocatedbytheIANA?
A232.0.0.0/24
B225.0.0.0/8
C232.0.0.0/8
D239.0.0.0/8
D
6.whichofthefollowingtechnologiescanreducethescaleofbroadcastdomain?
AVLAN
BTRUNK
CRARP
DSTP
A
7.Whichstatementaboutthetrunkinterfaceistrue?
AAtrunkinterfaceisalwaysconnectedtohosts.
BMultipleVLANIDscanbesetonatrunkinterface.TheVLANIDscanbethesameasordifferentfromthePVID.
CThetrunkinterfacecannothaveaPVID.
DIFthetrunkinterfacereceivesapacketwithaVLANnotintheallowedVLANlist,thetrunkinterfacebroadcastthepacketintheVLAN.
B
8.WhatisthelegalvirtualMACaddressinVRRP?
A01-01-5E-00-01-01
B01-00-5E-00-01-00
C00-00-5E-00-01-01
D01-01-5E-00-01-01
C
9.WhichofthefollowingstatementsarecorrectregardingpriorityinVRRP?
ATheipaddressowneralwaysuses255asitspriorityregardlessitsconfigpriority.
BTheipaddressowneralwaysuses0asitspriorityregardlessitsconfigpriority.
CWecanconfigurethepriorityas0tomaketherouterneverattendtheMasterelection.
DIfaVRRProuterchangesfromMastertoSlave,itwillsendoutaVRRPmessagewithpriority0inthenetwork.
A
10.WhichofthefollowingstatementsarecorrectregardingVRRP?
AOnlyMastercanprocessthedatapacketssendingtovirtualrouter.
BOnlySlavecanprocessthedatapacketssendingtovirtualrouter.
CBothMasterandSlavecanprocessthedatapacketssendingtothesamevirtualroutertorealizeloadbalance.
DBydefault,onlyMastercanprocessthedatapacketssendingtovirtualrouter:
butwecandosomeconfigurationtomaketheSlaveProcessthedatapacketssendingtovirtualrouter.
A
11.WhichofthefollowingstatementsarecorrectregardingthefunctionofVRRP?
AVRRPcanimprovethereliabilityofdefaultgateway.
BVRRPincreasetheconvergencespeedofroutingprotocol.
CVRRPismainlyusedfortrafficbalance.
DVRRPcanprovideonedefaultgatewayfordiffenrentnetworksegments,itsimplifiesthegatewayconfigurationforPC.
A
12.WhichofthefollowingstatementsarecorrectregardingdefaultgatewayofPCinthenetworkrunningVRRP?
AConfigureonlyonegatewayforthePCwhichistheIPaddressofMaster.
BConfigureonlyonegatewayforthePCwhichistheIPaddressofvirtualrouter.
CConfiguretwogatewaysforthePCwhicharetheIPaddressesofMasterandSlave.
DConfigurethreegatewaysforthePCwhicharetheIPaddressesofMaster,Slaveandvirtualrouter.
B
13.RTAconnectedtoaLANbye0/0whoseIPaddressis10.1.1.251andnetworkmaskis255.255.255.0.NowcreateavirtualrouterwithID1andvirtualIPaddress10.1.1.254onRTA.whichofthefollowingcommandsarecorrect?
A[RTA-ethernet0/0]vrrpvrid1virtual-ip10.1.1.254
B[RTA]vrrpvrid1virtual-ip10.1.1.254
C[RTA-ethernet0/0]vrrpvrid1virtual-ip10.1.1.254mask255.255.255.0
D[RTA]vrrpvrid1virtual-ip10.1.1.254mask255.255.255.0
A
14.WhichofthefollowingstatementsraecorrectregardingVRRPadvertisementmessage?
AVRRPhastwokindsofadvertisementmessage,oneissentbymaster,theotherissentbyslave.
BVRRPhastwokindsofadvertisementmessagewhichissentbymaster
CVRRPhastwokindsofadvertisementmessagewhichissentbyslave
DVRRPhastwokindsofadvertisementmessage,oneisusedformasterelection,theotheroneisusedinstablenetworkaftermasterelection.
B
15.whichofthefollowingfirewallsisthemostpopular?
Apacketfilteringfirewall
BStatefulfirewall
Cproxyfirewall
DAnti-virusfirewall
B
16.Howmanyuser-definedsecurityzonesatmostareconfiguredonanEudemon?
A3
B4
C5
D6
A
17.TheTCPSYNfloodattackusuallyoccursduringtheTCPhandshakeprocess.HowmanyhandshakesarerequiredtosetupaTCPconnection?
A1
B2
C3
D4
C
18.HowmanydefaultzonesdoestheEudemonsupportingmulti-instancehave?
ATwo
BThree
CFour
DFive
C
19.WhichofthefollowingisthepriorityvalueoftheDMZontheEudemon?
A10
B50
C75
D85
B
20.WhatisthemaximumnumberofsecurityzonessupportedbytheEudemon?
A256
B128
C32
D16
D
21.WhichofthefollowingindicatorsareperformanceindicatorsoftheEudemon?
AThroughputoflarge-sizedorsmall-sizedpackets.
BNumberofnewconnectionsandconcurrentconnectionspersecond
CVPNperformance
DMTUcheck
B
22.Inthescenariowherepacketsaresentandreceivedalongdifferentpaths,whichofthefollowingfunctionsneedstobedisabledonthefirewall?
AStatusdetection
BAttackdefense
CPacketfiltering
DStatusbackup
A
23.Assumethatthetraceroutetestisusedtodetectthepacketforwardingpathandtracertpacketshavepassedthroughthefirewall.whichofthefollowingattackprotectionfunctionsneedstobedisabledtonormallydisplaythetracertresult?
AICMP-redirect
BICMP-unreachable
CTracert
DSmurf
C
24.WhatistherecommendedminimumdelayforHRPpreemptionontheEudemon?
A120S
B60S
C10S
D5S
B
25.WhichofthefollowingcommandsisusedtodisplaythedetailedinformationabouttheEudemon?
Adisplayfirewallstatisticsystem
Bdisplayfirewallsessiontablerawboth-direction
Cdisplayfirewallsessiontableverbose
Ddisplayfirewallsessiontabledetail
C
26.Toprovideservicesofdifferentqualities,youcanclassifyservicesbasedonsuchpacketinformationasthepacketpriority,sourceIPaddress,destinationIPaddress,andportnumber.WhichofthefollowingQostechnologycanbeusedtoserviceclassification?
ATrafficpolicing
BTrafficshaping
CComplextrafficclassification
DCongestionmanagement
C
27.Qosinbest-effortservicemodeuseswhichofthefollowingqueueschedulingtechnology
AFIFO
BWFQ
CPQ
DRR
A
28.WhichofthefollowingstatementaboutQosindiffservmodeisfalse?
ATheparameterfieldintheIPpacketheaderinformsdevicesonthenetworkoftheQosrequirementsoftheapplication.
BEverydeviceonthepackettransmissionpathscanlearntheservicerequesttypesbyanalyzingtheIPpacketheader.
CBeforesendingPackets,theapplicationprogramneedstoconfirmthatthenetworkhasreservedresourcesforpackettransmission.
DDiffServisaQossolutionbasedonpackets.
C
29.Whichofthefollowingstatementaboutpacketmarkingisfalse?
AComparedwithtrafficpolicing,trafficshapingisadvancedintermsofcachingbursttraffic.
Bwithtrafficshaping,packetscanbetransmittedatanevenrate.
CCachingpacketsinthequeueincreasesthepacketdelayincaseofcongestion.
DIncaseofcongestion,trafficshapingcausesthepacketlossratiotoincrease.
D
30.Whichofthefollowinginformationinapacketcanbemarkedorre-marked?
AIPDSCP,IPprecedence,and802.1Pinformation
BIPsourceanddestinationaddresses
CMACaddress
DAnyinformationinthepacket
A
31.Simpletrafficclassificationcanbeperformedbasedonwhichofthefollowinginformationinvlanpackets?
ADSCP
BIPprecedence
CMPLXEXP
D802.1p
D
32.BasedontheDSCPfield(first6bitsoftheTosfield),pakcetscanbeclassifiedintohowmanytypes?
A4
B8
C16
D64
D
33.Inadditiontotrafficratelimit,theCARcanmarkpacketswithcolors.Ifonetokenbucketone-rateisusedintrafficpolicingandthenumberoftokensisinsufficient,packetsaremarkedwithwhichofthefollowingcolor?
ARed
BGress
CYellow
DBlue
A
34.Intrafficpolicingusingtwotokenbucketstwo-rate,whentheCIRissetto1Mbit/sandthePIRissetto2Mbit/s,whatisthemaximumtransmissionrateforthetrafficingreen?
A1Mbit/s
B2Mbit/s
C3Mbit/s
D4Mbit/s
A
35.Assumethattherearefourflowsa.b.c,andd,thetransmissionrateofeachflowis50Mbit/s,andthetotalbandwidthoftheinterfaceforflowtransmissionis100Mbit/s,Inthecaseofcongestion,WFQisavailableforflowsa,b,c,andd,withtheweightproportionbeing1:
2:
3:
4,whichofthefollowingstatementabouttheinterfacebandwidthallocatedtoeachflowistrue?
AInterfacebandwidthsallocatedtoflowsa,b,canddare10Mbit/s,20Mbit/s,30Mbit/s,and40Mbit/srespectively.
BInterfacebandwidthsallocatedtoflowsa,b,canddare50Mbit/s,50Mbit/s,0Mbit/s,and0Mbit/srespectively.
CInterfacebandwidthsallocatedtoflowsa,b,canddare40Mbit/s,30Mbit/s,20Mbit/s,and10Mbit/srespectively.
DFlowsa,b,canddarediscarded.
A
36.Assumethatcongestionoccursontheoutboundinterface,packetAiscachedinthePQ,andpacketBiscachedintheWFQ,whichofthefollowingstatementaboutpacketschedulingistrue?
APacketAisscheduledfirst.
BPacketBisscheduledfirst.
CPacketsAandBarescheduledatthesametime.
DPacketsAandBarediscarded.
A
37.AssumethatthefollowingWREDpolciesareusedinQoS:
ThelengthofthequeueforsavingDSCPpacketswiththeprioritybeingAF21ranges
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