CompTIA Cloud+ CV0-004 Certification PDF

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Exam : CV0-004
Title :
https://www.passcert.com/CV0-004.html
CompTIACloud+(2024)

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1.Anengineermadeachangetoanapplicationandneedstoselectadeploymentstrategythatmeetsthe
followingrequirements:
•Issimpleandfast
•CanbeperformedontwoIdenticalplatforms
Whichofthefollowingstrategiesshouldtheengineeruse?
A.Blue-green
B.Canary
C.Rolling
D.in-place
Answer:A
Explanation:
Theblue-greendeploymentstrategyisidealforscenarioswheresimplicityandspeedarecrucial.It
involvestwoidenticalproductionenvironments:one(blue)hoststhecurrentapplicationversion,whilethe
other(green)isusedtodeploythenewversion.Oncetestingiscompletedonthegreenenvironmentand
it'sreadytogolive,trafficisswitchedfrombluetogreen,ensuringaquickandefficientrolloutwith
minimaldowntime.Thismethodallowsforimmediaterollbackifissuesarise,bysimplyredirectingthe
trafficbacktotheblueenvironment.
Reference:CompTIACloud+materialemphasizestheimportanceofunderstandingvariouscloud
deploymentstrategies,includingblue-green,andtheirapplicationinreal-worldscenariostoensure
efficientandreliablesoftwaredeploymentincloudenvironments.
2.Thechangecontrolboardreceivedarequesttoapproveaconfigurationchange10deployinthecloud
productionenvironment.
Whichofthefollowingshouldhavealreadybeencompeted?
A.Penetrationtest
B.End-to-endsecuritytesting
C.Costbenefitanalysis
D.Useracceptancetesting
Answer:D
Explanation:
Beforeaconfigurationchangeisdeployedinthecloudproductionenvironment,itiscrucialtoconduct
UserAcceptanceTesting(UAT).UATinvolvestestingthesystembytheend-usersorclientstoensureit
canhandlerequiredtasksinreal-worldscenarios,accordingtospecifications.Thistestingisthefinal
stagebeforethechangeisapprovedforproduction,ensuringthatallfunctionalitiesmeetuser
requirementsandthesystemisreadyfordeployment.
Reference:TheCompTIACloud+certificationhighlightsthesignificanceofvarioustestingphases,
includingUAT,aspartoftheclouddeploymentprocesstovalidatethesystem'sreadinessand
functionalityforend-users.
3.Acustomerismigratingapplicationstothecloudandwantstograntauthorizationbasedonthe
classificationlevelsofeachsystem.
Whichofthefollowingshouldthecustomerimplementtoensureauthorisationtosystemsisgrantedwhen
theuserandsystemclassificationpropertiesmatch?(Selecttwo).
A.Resourcetagging

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B.Discretionaryaccesscontrol
C.Multifactorauthentication
D.Role-basedaccesscontrol
E.Token-basedauthentication
F.Bastionhost
Answer:B,D
Explanation:
DiscretionaryAccessControl(DAC)andRole-BasedAccessControl(RBAC)areeffectivemethodsfor
grantingauthorizationbasedonsystemclassificationlevels.DACallowsresourceownerstograntaccess
rights,makingitflexibleforenvironmentswithvaryingclassificationlevels.RBACassignspermissions
basedonroleswithinanorganization,aligningaccessrightswiththeuser'sjobfunctionsandensuring
thatusersaccessonlywhatisnecessaryfortheirrole,whichcanbemappedtosystemclassifications.
Reference:CompTIACloud+contentcoversvariousaccesscontrolmodels,emphasizingtheimportance
ofimplementingappropriatesecuritymeasuresthatalignwithorganizationalpoliciesandclassification
levelstoensuresecureandauthorizedaccesstocloudsystems.
4.Asystemsurpasses75%to80%ofresourceconsumption.
Whichofthefollowingscalingapproachesisthemostappropriate?
A.Trending
B.Manual
C.Load
D.Scheduled
Answer:C
Explanation:
Loadscalingisthemostappropriateapproachwhenasystemsurpasses75%to80%ofresource
consumption.Thismethodinvolvesadjustingresourcesdynamicallyinresponsetothecurrentload,
ensuringthesystemcanhandleincreaseddemandwithoutperformancedegradation.Loadscalingcan
beautomatic,allowingsystemstoscaleupordownbasedonpredefinedmetricslikeCPUusage,
memory,ornetworktraffic,providinganefficientwaytomanageresourcesandmaintainoptimal
performance.
Reference:TheCompTIACloud+examobjectivesincludeunderstandingcloudmanagementand
technicaloperations,whichencompassknowledgeofvariousscalingapproaches,includingloadscaling,
toensureefficientresourceutilizationincloudenvironments.
5.Anetworkadministratorisbuddingasite-to-siteVPNtunnelfromthecompany'sheadquartersoffice10
thecompany'spublicclouddevelopmentnetwork.Thenetworkadministratorconfirmsthefollowing:
TheVPNtunnelisestablishedontheheadquarterofficefirewall.
Whileinsidetheoffice,developersreportthattheycannotconnecttothedevelopmentnetworkresources.
WhileoutsidetheofficeonaclientVPN,developersreportthattheycanconnecttothedevelopment
networkresources.
TheofficeandtheclientVPNhavedifferentIPsubnetranges.
ThefirewallflowlogsshowVPNtrafficisreachingthedevelopmentnetworkfromtheoffice.
WhichofthefollowingisthenextstepthenextnetworkadministratorshouldtaketotroubleshoottheVPN
tunnel?

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A.Reviewthedevelopmentnetworkroutingtable.
B.Changetheciphersonthesite-to-siteVPN.
C.Restartthesite-to-siteVPNtunnel.
D.ChecktheACLSonthedevelopmentworkloads
Answer:A
Explanation:
ThenextstepintroubleshootingtheVPNtunnelissueistoreviewthedevelopmentnetworkroutingtable.
Thisactionwillhelpdetermineiftheroutingconfigurationsarecorrectlydirectingtrafficfromthe
headquartersofficethroughtheVPNtunneltothedevelopmentnetworkresources.Properrouting
ensuresthatdatapacketsfindtheirwaytothecorrectdestinationwithinthecloudenvironment,whichis
criticalforestablishingsuccessfulcommunicationbetweendifferentnetworksegments.
Reference:CompTIACloud+materialsstresstheimportanceofnetworkingfundamentalsincloud
environments,includingVPNconfigurationsandrouting,toensuresecureandefficientconnectivity
betweenon-premisesinfrastructureandcloudresources.
6.Acompany'smanwebapplicationisnolongeraccessibleviatheinternet.Thecloudadministrator
investigatesanddiscoverstheapplicationisaccessiblelocallyandonlyviaanIPaccess.
Whichofthefollowingwasmisconfigured?
A.IP
B.DHCP
C.NAT
D.DNS
Answer:D
Explanation:
WhenawebapplicationisaccessiblelocallyviaanIPaddressbutnotviatheinternet,theissuelikelylies
withtheDomainNameSystem(DNS).DNSisresponsiblefortranslatingdomainnamesintoIP
addresses.AmisconfigurationinDNSrecordsorfailureinDNSresolutioncanpreventusersfrom
accessingtheapplicationthroughitsdomainname,eventhoughtheapplicationitselfisrunningand
accessibleviaitsdirectIPaddress.
Reference:IntheCompTIACloud+curriculum,understandingcloudconceptsandnetworking
fundamentals,includingDNS,iscrucialfortroubleshootingandensuringapplicationsareaccessibleand
performoptimallyincloudenvironments.
7.Acloudengineerisprovisioninganewapplicationthatrequiresaccesstotheorganization'spublic
cloudresources.
Whichofthefollowingisthebestwayforthecloudengineertoauthenticatetheapplication?
A.Accesskey
B.API
C.MFAtoken
D.UsernameandPassword
Answer:A
Explanation:
Thebestwaytoauthenticateanapplicationrequiringaccesstoanorganization'spubliccloudresources
isthroughtheuseofanaccesskey.Accesskeysprovideasecuremeansofauthenticationfor

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applicationsandserviceswithouttheneedforinteractivelogincredentials.Thismethodisparticularly
usefulforautomatedprocessesorapplicationsthatneedtointeractwithcloudservicesprogrammatically,
ensuringsecureandefficientaccesscontrol.
Reference:CompTIACloud+contentemphasizestheimportanceofsecureauthenticationmechanisms,
suchasaccesskeys,inmanagingandsecuringaccesstocloudresources,aligningwithbestpractices
forcloudsecurityandapplicationdeployment.
8.AsecurityengineerIdentifiesavulnerabilitymacontainerizedapplication.Thevulnerabilitycanbe
exploitedbyaprivilegedprocesstoreadtiecontentofthehost'smemory.
ThesecurityengineerreviewsthefollowingDockerfiletodetermineasolutiontomitigatesimilarexploits:
Whichofthefollowingisthebestsolutiontopreventsimilarexploitsbyprivilegedprocesses?
A.AddingtheUSERmyappuserinstruction
B.PatchingthehostrunningtheDockerdaemon
C.ChangingFROMalpiner3.17toFROMalpine:latest
D.Runningthecontainerwiththeready-onlyfilesystemconfiguration
Answer:A
Explanation:
Addingthe"USERmyappuser"instructiontotheDockerfileisthebestsolutiontopreventsimilarexploits
byprivilegedprocesses.Thisinstructionensuresthatthecontainerrunsasanon-privilegeduserinstead
oftherootuser,significantlyreducingtheriskofprivilegedexploits.Runningcontainerswithleast
privilegeprinciplesminimizesthepotentialimpactofvulnerabilities,enhancingtheoverallsecurity
postureofthecontainerizedenvironment.
Reference:TheCompTIACloud+frameworkincludessecurityconcerns,measures,andconceptsfor
cloudoperations,highlightingtheimportanceofcontainersecuritypractices,suchasrunningcontainers
asnon-rootuserstopreventunauthorizedaccessandexploitation.
9.Across-siterequestforgeryvulnerabilityexploitedawebapplicationthatwashostedinapubliclaaS
network.AsecurityengineerdeterminedthatdeployingaWAFinblockingmodeataCDNwouldprevent
theapplicationfrombeingexploitedagain.However,aweekafterimplementingtheWAF,theapplication
wasexploitedagain.
WhichofthefollowingshouldthesecurityengineerdotomaketheWAFcontroleffective?
A.ConfiguretheDDoSprotectionontheCDN.
B.InstallendpointprotectionsoftwareontheVMs
C.AddanACLtotheVMsubnet.
D.DeployanIDSonthelaaSnetwork.
Answer:C
Explanation:
AfteraWAFdeploymentfailstopreventanexploit,addinganAccessControlList(ACL)totheVirtual
Machine(VM)subnetcanbeaneffectivecontrol.ACLsprovideanadditionallayerofsecuritybyexplicitly
definingwhichtrafficcanorcannotenteranetworksegment.BysettinggranularrulesbasedonIP
addresses,protocols,andports,ACLshelptorestrictaccesstoresources,therebymitigatingpotential
exploitsandenhancingthesecurityoftheIaaSnetwork.

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Reference:CompTIACloud+materialscovergovernance,risk,compliance,andsecurityforthecloud,
includingtheimplementationofnetworksecuritycontrolslikeACLs,toprotectcloudenvironmentsfrom
unauthorizedaccessandpotentialsecuritythreats.
10.Acloudengineerwantscontainerstorunthelatestversionofacontainerbaseimagetoreducethe
numberofvulnerabilities.TheapplicationsinuserequitePython3.10andatenotcompatiblewithany
otherversion.Thecontainers'imagesarecreatedeverytimeanewversionisreleasedfromthesource
image.
GiventhecontainerDockerfilebelow:
Whichofthefollowingactionswillachievetheobjectiveswiththeleasteffort?
A.Performdockerpullbeforeexecutingdockerrun.
B.Executedockerupdateusingalocalcrontogetthelatestcontainerversion.
C.Changetheimagetousepython:latestontheimagebuildprocess.
D.UpdatetheDockerfiletopinthesourceimageversion.
Answer:A
Explanation:
Performinga"dockerpull"beforeexecuting"dockerrun"ensuresthatthelatestversionofthecontainer
baseimageisused,aligningwiththeobjectiveofreducingvulnerabilities.Thiscommandfetchesthe
latestimageversionfromtherepository,ensuringthatthecontainerrunsthemostup-to-dateandsecure
versionofthebaseimage.Thisapproachisefficientandrequiresminimaleffort,asitautomatesthe
processofmaintainingthelatestimageversionsforcontainerdeployments.
Reference:WithintheCompTIACloud+examinationscope,understandingmanagementandtechnical
operationsincloudenvironments,includingcontainermanagementandsecurity,iscritical.Thisincludes
bestpracticesformaintainingup-to-datecontainerimagestominimizevulnerabilities.
11.Anengineerwantsloscaleseveralcloudworkloadsondemand.
Whichofthefollowingapproachesisthemostsuitable?
A.Load
B.Scheduled
C.Manual
D.Trending
Answer:A
Explanation:
Loadscalingisthemostsuitableapproachforscalingseveralcloudworkloadsondemand.It
automaticallyadjuststhenumberofactiveserversinacloudenvironmentbasedonthecurrentloador
traffic,ensuringthatresourcesareefficientlyutilizedtomeetdemandwithoutmanualintervention.This
approachhelpsmaintainoptimalperformanceandavailability,particularlyduringunexpectedsurgesin
workloadortraffic.
Reference:Understandingcloudmanagementandtechnicaloperations,includingscalingstrategies,is
crucialforoptimizingresourceutilizationandperformanceincloudenvironments,asoutlinedinthe
CompTIACloud+objectives.

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12.AsoftwareengineerisintegratinganapplicationloThecloudthatiswebsocketbased.
Whichofthefollowingapplicationsistheengineermostlikelydeploying?
A.Image-sharing
B.Datavisualization
C.Chat
D.Filetransfer
Answer:C
Explanation:
Achatapplicationismostlikelytobedeployedwhenintegratingawebsocket-basedapplicationtothe
cloud.Websocketsprovidefull-duplexcommunicationchannelsoverasingle,long-livedconnection,
whichisidealforreal-timeapplicationslikechatservicesthatrequirepersistentconnectionsbetweenthe
clientandserverforinstantdataexchange.
Reference:CompTIACloud+materialscovercloudnetworkingconcepts,emphasizingtheimportanceof
choosingtherighttechnologies,likewebsockets,forspecificapplicationrequirementstoensureefficient
andresponsivecloud-basedservices.
13.AmanagerwantsinformationaboutwhichuserssignedintoacertainVMduringthepastmonth.
Whichofthefollowingcanthecloudadministratorusetoobtainthisinformation?
A.Retention
B.Alerting
C.Aggregation
D.Collection
Answer:D
Explanation:
ToobtaininformationaboutwhichuserssignedintoacertainVMduringthepastmonth,acloud
administratorcanuselogcollection.Logcollectioninvolvesgatheringandstoringlogsfromvarious
sources,includingVMs,toprovidehistoricaldataonsystemaccessandactivity,whichcanthenbe
analyzedtoidentifyuserlogininstances.
Reference:TheCompTIACloud+certificationemphasizestheimportanceofmonitoringandvisibilityin
cloudenvironments,whichincludeslogcollectionandanalysisaskeycomponentsofoperational
managementandsecuritymonitoring.
14.AcloudengineerisreviewingthefollowingDockerfiletodeployaPythonwebapplication:
Whichofthefollowingchangesshouldtheengineermakelothefiletoimprovecontainersecurity?
A.Addtheinstruction"JSERnonroot.
B.Changetheversionfromlatestto3.11.
C.RemovetheEHTRYPOIKTinstruction.
D.Ensuremyapp/main.pylsownedbyroot.
Answer:A
Explanation:

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Toimprovecontainersecurity,theengineershouldaddtheinstruction"USERnonroot"totheDockerfile.
Thischangeensuresthatthecontainerdoesnotrunastherootuser,whichreducestheriskofprivilege
escalationattacks.Runningcontainersasanon-rootuserisabestpracticeforenhancingsecurityin
containerizedenvironments.
Reference:CompTIACloud+contentincludessecurityconcerns,measures,andconceptsforcloud
operations,highlightingcontainersecuritybestpracticessuchasrunningcontainerswithleastprivilegeto
mitigatesecurityrisks.
15.Acompanyhasdecidedtoadoptamicroservicesarchitectureforitsapplicationsthataredeployedto
thecloud.
Whichofthefollowingisamajoradvantageofthistypeofarchitecture?
A.Increasedsecurity
B.Simplifiedcommunication
C.Reducedservercost
D.Rapidfeaturedeployment
Answer:D
Explanation:
Amajoradvantageofadoptingamicroservicesarchitectureisrapidfeaturedeployment.Microservices
allowforindependentdevelopment,deployment,andscalingofindividualservicecomponents,enabling
teamstobringnewfeaturestomarketmorequicklyandefficientlycomparedtomonolithicarchitectures.
Reference:TheCompTIACloud+certificationcoversclouddesignaspects,includingarchitecturalmodels
likemicroservices,emphasizingtheirroleinfacilitatingagiledevelopmentpracticesandrapidfeature
releasecyclesincloudenvironments.
16.Acompanywantstooptimizecloudresourcesandlowertheoverheadcausedbymanagingmultiple
operatingsystems.
Whichofthefollowingcomputeresourceswouldbebesttohelptoachievethisgoal?
A.VM
B.Containers
C.Remotedesktops
D.Bare-metalservers
Answer:B
Explanation:
Containersarethebestcomputeresourcestooptimizecloudresourcesandlowertheoverheadcaused
bymanagingmultipleoperatingsystems.Containersencapsulateapplicationsandtheirdependencies
intoasingleexecutablepackage,runningonasharedOSkernel,whichreducestheneedforseparate
operatingsystemsforeachapplicationandsimplifiesresourcemanagement.
Reference:CompTIACloud+materialsdiscussmanagementandtechnicaloperationsincloud
environments,includingtheuseofcontainerstoimproveresourceutilizationandoperationalefficiencyby
minimizingtheoverheadassociatedwithtraditionalVMs.
17.Adeveloperisdeployinganewversionofacontainerizedapplication.
TheDevOpsteamwants:
•Nodisruption

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•Noperformancedegradation*Cost-effectivedeployment
•Minimaldeploymenttime
Whichofthefollowingisthebestdeploymentstrategygiventherequirements?
A.Canary
B.In-place
C.Blue-green
D.Rolling
Answer:C
Explanation:
Theblue-greendeploymentstrategyisthebestgiventherequirementsfornodisruption,noperformance
degradation,cost-effectivedeployment,andminimaldeploymenttime.Itinvolvesmaintainingtwo
identicalproductionenvironments(blueandgreen),whereonehoststhecurrentapplicationversionand
theotherisusedtodeploythenewversion.Oncetestingonthegreenenvironmentiscomplete,trafficis
switchedfrombluetogreen,ensuringaseamlesstransitionwithnodowntime.
Reference:Understandingvariousclouddeploymentstrategies,suchasblue-greendeployments,is
essentialformanagingcloudenvironmentseffectively,ashighlightedintheCompTIACloud+objectives,
toensuresmoothandefficientapplicationupdates.
18.AnDevOpsengineerisreceivingreportsthatuserscannolongeraccessthecompany'sweb
applicationafterhardeningofawebserver.Theusersarereceivingthefollowingerror:
ERR_SSLJ/ERSION_OR_CIPHER_MISMATCH.
Whichofthefollowingactionsshouldtheengineertaketoresolvetheissue?
A.Restartthewebserver.
B.ConfigureTLS1.2ornewer.
C.Updatethewebserver.
D.ReviewlogsontheWAF
Answer:B
Explanation:
ToresolvetheERR_SSL_VERSION_OR_CIPHER_MISMATCHerrorafterhardeningawebserver,the
engineershouldconfiguretheservertouseTLS1.2ornewer.Thiserroroftenoccurswhentheserveror
clientsupportsanoutdatedversionofSSL/TLSorincompatibleciphersuites.Updatingtoamodern,
secureversionofTLSensurescompatibilityandenhancessecurity.
Reference:TheCompTIACloud+certificationincludesgovernance,risk,compliance,andsecurityforthe
cloud,emphasizingtheimportanceofimplementingup-to-datesecurityprotocolslikeTLStoprotectdata
intransitandensuresecurecommunicationsincloudenvironments.