If you have an ItemUpdated or ItemUpdating event receiver and it causes an update to the item, how do you prevent another ItemUpdated and ItemUpdating event from being fired during your update?
Cannot prevent it
This type of situation will never arrise
Before performing your update, call DisableEventFiring(). After update, call EnableEventFiring().
Before performing your update, call EnableEventFiring(). After update, call DisableEventFiring().
None of the above