TheOSPFHelloprotocolperformswhichofthefollowingtasks?(Choosetwo.)()
A.Itprovidesdynamicneighbordiscovery.
B.Itdetectsunreachableneighborsin90secondintervals.
C.Itmaintainsneighborrelationships.
D.Itnegotiatescorrectnessparametersbetweenneighboringinterfaces.
E.Itusestimerstoelecttherouterwiththefastestlinksasthedesignatedrouter.
F.ItbroadcastshellopacketsthroughouttheinternetworktodiscoverallroutersthatarerunningOSPF