No, they are not grounded.
Yes, they are GFCI protected (as long as they are on the LOAD side of the GFCI). *
You are allowed to protect older ungrounded outlets by GFCI protecting them, though it's still preferable (but more invasive) to actually get ground wires everywhere. If you have any 3-prong outlets without a ground, they must be GFCI protected and labelled "No equipment ground".