There's not enough information to say.
"RNAV" means "area navigation" which means being able to navigate direct to a point which is not necessarily a navaid (a navaid in this context is a VOR or an NDB).
In conventional radio navigation you can track direct to/from a navaid but not to some other point.
Years ago, there was a Bendix-King product called KNS80 or KNS81 which would receive one VOR and its co-located DME and which would synthesise a virtual VOR/DME at some other location. You could then track towards this virtual point, as if it was a real VOR/DME.
A KNS80 is a waste of space because it isn't FM immune. Also one has to be within reception of the real VOR/DME for the entire leg; if you are flying airways and ATC give you a DCT to some point which is 150nm away then there is little chance of having reception of the real VOR/DME for that distance. It also doesn't work in e.g. France whose VORs rarely have a DME in them.
The modern way of doing RNAV is with an IFR approved GPS.
You can use it for VFR too, if you plan your routes on airways intersections. This is a very handy way to do VFR route planning because all these points are in the GPS database. It is years since I had to enter the lat/long coordinates of some point. ATC quite like it too because it sounds like you know what you are doing
Some countries, e.g. Greece, like VFR pilots to route via airways intersections... this effectively implies a GPS.