said by redwolfe_98:
one time, when i had a problem with my yahoo account, instead of giving me security questions to answer, they told me to tell them what the security questions were, as well as the answers..
The 'what are your questions' challenge was an easy way to harden a weak verification routine with data that was already there.
I had the same problem with not knowing the questions because it wasn't necessary to remember them when they were set.
I don't know of any service provider that adopted this extra challenge that actually informed it's users of the change.