Adeveloperisdesigningamulti－tierwebapplicationanddiscoversaneedtologeachincomingclientrequest.Whichtwopatterns,takenindependently,provideasolutionforthisproblem?() A.TransferObjectB.ServiceLocatorC.FrontControllerD.InterceptingFilterE.BusinessDelegateF.Model-View-Controller
Adeveloperisdesigningamulti－tierwebapplicationanddiscoversaneedtologeachincomingclientrequest.Whichtwopatterns,takenindependently,provideasolutionforthisproblem?()
A.TransferObject
B.ServiceLocator
C.FrontController
D.InterceptingFilter
E.BusinessDelegate
F.Model-View-Controller
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Giventhatascopedattributecartexistsonlyinauser’ssession,whichtwo,takenindependently,ensurethescopedattributecartnolongerexists?() A.${cart=null}B.c：removevar=cart/C.c：removevar=${cart}/D.c：removevar=cartscope=session/E.c：removescope=sessioncart/c：remove
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