State Management.

Client-side state management patterns and libraries. Covers 12 sub-skills.

• State Management · 1 of 3

  React Context API

  Which component must wrap consumers to supply a Context value?

  AContext.ScopeBContext.ConsumerCContext.WrapperDContext.Provider

• State Management · 2 of 3

  Global vs Local State Patterns

  In a 2026 React app, where should the value of a list filter (e.g. ?status=open) most appropriately live, per the modern state-placement hierarchy?

  AIn a top-level React Context near the app rootBIn a global Zustand store shared across routesCIn the URL search params, read via the routerDIn useState on the page component rendering the list

• State Management · 3 of 3

  TanStack Query / SWR

  What tradeoff does increasing staleTime usually introduce?

  AQuery cache entries are never garbage-collectedBHigher network usage but data stays fresherCAutomatic mutation retry logic gets disabledDLower refetch load but higher stale-data risk