A:
No, the lens adapter tube for the Nikon Coolpix L120 only mounts one specific wide angle converter, and any 67 mm filter.
As your L120 has its own built-in lens, you can only use converter lenses. All of the focusing and so on is still provided by you camera's non-removable primary lens. This is a lens for the Nikon F mount SLR cameras, which lack a lens of their own, and so the focusing and zooming mechanism is built into it.