Inwhichofthesephasesisacustomersnetworkassessedtodetermineitssystemreadiness?Selectexactly1answer(s)fromthefollowing:()。 A.planB.designC.operateD.implement
Inwhichofthesephasesisacustomersnetworkassessedtodetermineitssystemreadiness?Selectexactly1answer(s)fromthefollowing:()。
A.plan
B.design
C.operate
D.implement
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对因果系统,只要判断H(s)的极点,即A(s)=0的根(称为系统特征根)在平面上的位置,即可判定系统是否稳定。下列式中对应的系统可能不稳定的是________。 A.s*s*s+4s*s-3s+2B.s*s*s+4s*s+3sC.s*s*s-4s*s-3s-2D.s*s*s+4s*s+3s+2
非单位负反馈系统,其前向通道传递函数为G(S),反馈通道传递函数为H(S),当输入信号为R(S),则从输入端定义的误差E(S)为 ( ) A 、()()()E S R S G S =⋅;B 、()()()()E S R S G S H S =⋅⋅;C 、()()()()E S R S G S H S =⋅-;D ()()()()E S R S G S H S =-。
用罐外测量法对铁路罐车进行检定,在罐体规定位置多点测量罐的壁厚后,计算罐平均上板厚度和平均端板厚度的计算公式分别为()。 A.S1=(S11+S12+S13+S14)/4;S2=(S21+S22)/2B.S1=(S11+S12+S13+S14)/2;S2=(S21+S22)/2C.S1=S11+S12+S13+S14;S2=S21+S22D.S1=(S11+S12+S13+S14)/2;S2=(S21+S22)/4
查询选修了课程号为'C2'的学生号和姓名，若用下列SQL的SELECT语句表达时，错误的是( )。A．SELECT S.S#，SNAME FROM S WHERE S.S# =(SELECT S C.S# FROM SC WHERE C#='C2')B．SELECT S.S#,SNAME FROM S，SC WHERE S.S#==S C.S# AND C#='C2'C．SELECT S.S#，SNAME FROM S，SC WHERE S.S#=S C.S# AND C#='C2' ORDER BY S.S#D．SELECT S.S#，SNAME FROM S WHERE S.S IN (SELECT SC.S## FROM SC WHERE C#='C2')
Whichdesignphaseservicecomponentincludesthedevelopmentanddocumentationofthetestcaseorcasesusedtoverifythatadeployedinfrastructuremeetsoperational，functional，andinterfacerequirements？Selectexactly1answer（s）fromthefollowing：（）。A.ImplementationPlanB.BusinessPlanC.StagingPlanD.DetailedDesignDevelopmentE.SystemsAcceptanceTestPlanDevelopment
WhichoftheseisanaccuratelistofCiscoLifecycleServicesphases?Selectexactly1answer(s)fromthefollowing:()。 A.initiationplanninganalysisdesigndevelopmentimplementationoperationsandmaintenanceB.projectplanning，siteassessmentriskassessmentsolutionselectionandacquisition，testing，andoperationsC.prepare，plan，design，implementoperate，andoptimizeD.analysis，design，deploymenttesting，implementation，andproductionE.presales，projectplanning，developmentimplementation，operationstesting，andoperationssign-off
WhichoftheseisthebestdefinitionoftheCiscoLifecycleServicesapproach?Selectexactly1answer(s)fromthefollowing:()。 A.ItdefinestheminimumsetofservicesrequiredtosuccessfullydeployandoperateasetofCiscotechnologiesB.ItdetermineshowbesttopriceCiscoproductsC.ItprovidespartnerswithausefulwaytoleverageCiscoresourcesD.Itconsistsofthesephases：plan，deploy，support，andtroubleshoot
Whichdesignphaseservicecomponentconsistsofdevelopingadetailed,site－specificplanforimplementinganewtechnologysystemorsolution?Selectexactly1answer(s)fromthefollowing:()。 A.DetailedDesignDevelopmentB.SystemsAcceptanceTestPlanDevelopmentC.StagingPlanD.ImplementationPlanDevelopmentE.ProjectKick-off
Whichservicecomponentwithinthepreparephaserecommendstheappropriatetechnologystrategytoaddressabusinessrequirementofthecustomer?Selectexactly1answer(s)fromthefollowing:()。 A.identifyingwhatacustomerrequiresfromaproposedsolutionB.analyzesthecustomersbusinessrequirementsandrecommendstheappropriateCiscotechnologiestomeetbusinessrequirementsC.determiningwhatend-usertrainingacustomerrequiresD.addressingacustomer’sphysicalrequirements
Whichplanphaseservicecomponentinvolvesevaluatinghowpreparedacustomerscurrentfacilityinfrastructureistosupportanewtechnology?Selectexactly1answer(s)fromthefollowing:()。 A.ProofofConceptB.SiteReadinessAssessmentC.ProposalDevelopmentD.OperationsReadinessAssessment
Duringtheimplementphase,systemsacceptancetestingdoeswhichofthefollowingforthecustomer?Selectexactly1answer(s)fromthefollowing:()。 A.installation，configuration，andtesting，aswellasthecommissioningoftoolsandprocessesinaccordancewiththeoperationsimplementationplanB.provisionofinformationregardingcustomer-specifieddesignrequirementsandconfigurationC.themigrationofnetworkservicesfromanexistingstatetoafuturestateinaccordancewiththemigrationplanD.theprovisionofanobjectivemeansofmeasuringsystemoperabilityandfunctionality
Whatisonekeyobjectiveoftheoperationsreadinessassessmentperformedintheplanphase?Selectexactly1answer(s)fromthefollowing:()。 A.alignbusinessrequirementswithtechnicalrequirementsB.createaplantorecycleusedequipmentC.evaluatethereadinessofacustomerscurrentoperationsandnetworkmanagementinfrastructuretosupportanewtechnologyD.installandtestsystemcomponentsinanon-productionenvironment
Whichbenefitcanbeobtainedbyusingtheconfigurationmanagementservicecomponentintheoperatephase?Selectexactly1answer(s)fromthefollowing:()。 A.reducedoperatingcosts，duetoaconsistentframeworkformakingnecessarychangesinanefficientandaccountablemannerB.greateraccuracy，completeness，andtimelinessofnetworkconfigurationinformationC.notificationprovidedtointerestedpartiesregardingproblemsthathavebeenidentified，andasystemthatscaleswithcustomerrequirementsD.improvedsystemservicequalityandfewerdisruptions
Whichdefinitionbestdescribesthestagingplandevelopmentservicecomponentwithinthedesignphase?Selectexactly1answer(s)fromthefollowing:()。 A.providingastep-by-stepplanthatdetailstheinstallationandservice-commissiontasksrequiredinordertocreateacontrolled-implementationenvironmentthatemulatesacustomernetworkB.assessingtheabilityofsitefacilitiestoaccommodateproposedinfrastructurechangesC.developingandexecutingproof-of-concepttests，validatinghigh-levelinfrastructuredesign，andidentifyinganydesignenhancementsD.improvingthenetworkmanagementsystemandtheperformanceandfunctionalityofinfrastructureoperations
Whichofthefollowingbestdescribethecustomerbenefitsofchangemanagementintheoperatephase?Selectexactly1answer(s)fromthefollowing:()。 A.reduceunnecessarydisruption，delays，rework，andotherproblemsbyestablishingtestcasesforuseinverifyingthatthesystemmeetsoperational，functional，andinterfacerequirementsB.improveitsabilitytomakesoundfinancialdecisionsbydevelopingabusinesscasebasedonitsbusinessrequirementsandestablishingabasisfordevelopingatechnologystrategyC.reduceoperatingcostsandlimitchange-relatedincidentsbyprovidingaconsistentandefficientsetofprocessesD.improvethereturnoninvestmentandhastenmigrationbyidentifyingandplanningfornecessaryinfrastructurechangesandresourceadditions，aswellasreducedeploymentcostsbyanalyzinggapsearlyintheplanningprocesstodeterminewhatisneededtosupportthesystem
Whichisthemostaccuratestatementregardingthebusinessrequirementsdevelopmentservicecomponentinthepreparephase.Selectexactly1answer(s)fromthefollowing:()。 A.DeterminetheappropriatecoolingtemperatureforacustomersserverroomB.AnalyzethecustomersbusinessrequirementsforaproposedsolutionC.AnalyzeacustomersongoingoperationalrequirementsD.Identifyacustomerstechnologyrequirements
Choosethemostaccuratestatementregardingtheaccountqualificationandplanningservicecomponentinthepreparephase.Selectexactly1answer(s)fromthefollowing:()。 A.providingapartnerwithinformationregardingcustomeracceptanceofanewSolutionB.providinginformationregardingcurrentnetworkinfrastructurereadinessC.usingstakeholderinterviewstoidentifystakeholdersanddecision-makers，high-levelsolutionrequirements，timelines，andthescopeofanopportunityD.adjustingasolutiontoaccountforacustomersphysicalsitecharacteristics
main（）{ char *s2=“I love China!”,**s1=s2；char *s3,c,*s4=“w”;s3=c;*s3=‘H’;s2=s2+2;printf(“%s\t%c\t%s\t%c\n”,s2,*s3,s4,**s1);}
下列等式中，哪一个是不正确的？（）A、S1∩（S2∩S3）≡（S1∩S2）∩S3B、πA（S1∩S2）≡πA（S1）∩πA（S2）C、σF（S1∩S2）≡σF（S1）∩σF（S2）D、πA（S1∪S2）≡πA（S1）∪πA（S2）
下列哪一项是元素原子电离能递增的正确顺序（）A、1S2，1S22S22P2，1S22S22P6，1S22S22P63S1B、1S22S22P63S1，1S22S22P6，1S22S22P2，1S2C、1S2，1S22S22P6，1S22S22P2，1S22S22P63S1D、1S22S22P63S1，1S22S22P2，1S22S22P6，1S2
查询选修了课程号为’C2’的学号和姓名，下列可以实现该效果的SQL语句是（）A、select s.s#，sname from s where s.s#=（selectsc.s#fromscwherec#=’c2’B、select s.s#，sname from s，s cwhere s.s#=sc.s#andc#=’c2’C、select s.s#，sname from s joinscon s.s#=sc.s#wherec#=’c2’D、select s.s#，sname from s where s.s#in（selectsc.s#fromscwherec#=’c2’）
非单位负反馈系统，其输出为C（S），反馈通道传递函数为H（S），当输入信号为R（S），则从输入端定义的误差E（S）为（）。A、E（S）=C（S）·H（S）B、E（S）=R（S）·C（S）·H（S）C、E（S）=R（S）·H（S）-C（S）D、E（S）=R（S）-C（S·）H（S）
单选题45s rRNA经剪接后生成（ ）。A5s.5.8s.18s.rRNAB16s.25s.5s.rRNAC18s.25s.5s.rRNAD16s.5.8s.25s.rRNAE18s.5.8s.28s.rRNA