A user has asked you if it's possible to run a 32-bit application on a 64-bit operating system. What is your answer?

Both 32-bit and 64-bit applications will be supported by a 64-bit operating system. Although a 32-bit application will run on a 64-bit operating system, it won't benefit from the 64-bit speed. It will essentially run at half the speed of a 64-bit application. A 64-bit application cannot run on a 32-bit operating system, which only supports 32-bit programs. Fortunately, 32-bit operating systems aren't available on many computers today.