Self-Referential Aptitude 2

The questions in the following test are not listed in their proper order; figuring out the correct order is part of the puzzle.

\bullet What is the product of the answers to the previous and the next question?
\bullet How many questions in this test have a different answer from the previous question?
\bullet What is the sum of the answers to the first and the last question?
\bullet How many questions in this test have the same answer as the next question?