Cell phone wipe only Exchange or all accounts?

I'm using Exchange 2010 SP1.  When you remotely wipe a user's cell phone does the entire phone get wiped, or only the user's Exchange account information? (if they have say a home email account and the Exchange account on the same phone)  In addition, did the lock option disappear?  The users do have locks set on their phones, but I was wondering if I could force a lock in addition to the wipe.  (in case the user setup the phone to render the lock useless - like a super long timeout).