I like to ask if you remember any question in the Google adwords certification. Maybe you still remember some so please share with us.
I have an entire mock test I use for my training courses, PM me for a copy and send me your email address!
Keep me updated about this thread. My idea is that to achieve certification you will need to manage a client account with a $1000 spend in 90 days I think, so it is pointless to take the test unless you already have such a client.