For personal use, no. AARP et. al. still have enough weight to throw around that politicians don't dare try regulating RVs in any way which might actually inconvenience anyone.
For commercial purposes (e.g., transporting from the manufacturer to the dealership), yes, if the Gross Combined Weight Rating (the weight rating of the tow vehicle plus the weight rating of the trailer) is in excess of 26,000 lbs. and the trailer itself has a GVW in excess of 10,000 lbs.
If it's not on a for-hire basis (e.g., a transporter delivering it to a dealer), then no.
Only if you're transporting is as a third party carrier. Recreational vehicles are exempt from CDL requirements. However, your state may have additional requirements for non-CDL vehicles in excess of 26,000 lbs. Gross Vehicle Weight Rating/Gross Combination Weight Rating. You need to inquire with the DMV in your home state about this.
Not necessarily, but specifics matter in regard to this question.
Yes. If it requires a tanker with an unrestricted CDL, so it does with a permit, as well.
For private, recreational use, no. And this applies to all states.
If the Gross Combined Weight Rating of the truck and trailer is in excess of 26,000 lbs, yes.
IF it is for commercial/business purposes and IFthe trailer and tow vehicle come up to a Gross Combination Weight Rating in excess of 26,000 lbs., then yes, you need a Class A CDL.
No, you don't. RVs are exempted from CDL requirements. Your state, however, may require that you upgrade your licence if the vehicle is over 26,000 lbs. GVWR.
Yes, you will need insurance to drive with a CDL license.
Vehicle length is not a factor in determining whether or not a CDL is required.
Depends on the GVW of the trailer and the Gross Combined Weight Rating of the truck and trailer.
That depends on the purpose of the vehicle, and the Gross Combination Weight Rating. If it's for commercial use, and the GCWR exceeds 26,000 lbs., then yes, you'll need a CDL. If it's a registered RV, then no - RVs are exempt from CDL requirements.