In every atom and molecule on this earth there will be Van der waal (London dispersion forces).
(Nobody be a smartass about this; the spec says these very words).
Dipole Dipole interaction exists between Dipoles.
A Dipole is simply a difference in Electronegativity, Pretty much if you have a C-X or H-X where X is the Halogen, You will have a Dipole Dipole Interaction, but don't forget you still have Van der waals forces present, it's just that Dipole-Dipole Interaction is the strongest.