Yes
Depends. You can drive up to a Class 6 truck (up to 26,000 lbs. GVWR) without a CDL. Class 7 or Class 8 trucks require a CDL.
No, not to insure it just to drive it. You can insure it and let someone else drive it as long as they have their Class A CDL.
To drive a cement truck legally, you need a class B CDL (Commercial Drivers License). At 18, you can apply for a class B CDL.
Depends on which Class of CDL. A driver with a Class C CDL is not licensed on that vehicle. A driver with a Class B CDL can drive that combination only if the GVW of the trailer is less than 10,000 lbs. A driver with a Class A CDL can drive it.
Yes. You can drive that vehicle with either a Class B or Class A CDL.
You would need a Class A CDL for Dump Truck. It's not as intense as more restrictive classes of CDL.
Eighteen and possess a CDL, Class A license
Need to know which jurisdiction you live in to answer this question. In the US, the presence of air brakes on a vehicle has no impact on the license class, and that would be determined by the Gross Vehicle Weight Rating of the vehicle. Most likely, you would need a Class B CDL for the vehicle you're describing.
Yes. Class B CDL applies to all single vehicles with a GVW in excess of 26,000 lbs.
The same as it would be otherwise, minus the air brakes written test.
Yes. If it's a straight truck, you could drive it on a Class B, as well. The Moffet itself doesn't require a CDL or any additional licenses or endorsements.