I think you just answered your own question and way to go!
Alam - know
Alam ko ang pangalan mo. (I know your name.)
Marunong - know how
Marunong akong mag-Tagalog / magsalita ng Tagalog. (I know how to speak Tagalog.)
You could even put them together:
Alam mo bang marunong si Rudel magTagalog? (Did you know that Rudel knows how to speak Tagalog?)
I hope that helped.