It is a nice title for a salesman, so questions are going to be relevant to the product and market sector
1. Identifie possible clients in the area.
2. What experience have you got dealing with products in your prevoius career.
3. Presentation skills experience.
4. Who would you be selling to.
I found ex services technicians great for service engr roles as they turned up on time, stayed till the job was done and did it well