What is a subroutine closure? What is it used for? How is it implemented?

Using your favorite language and compiler, write a program that can tell the order in which certain subroutine parameters are evaluated.

What is a calling sequence for a subroutine, and how does it function? For what purpose does it serve? Just what does "subroutine prologue" and "epilogue" entail, anyway?

In C#, how do you make a Windows service?

How well do you grasp the notion of concurrency control?

How does the lock-and-keys approch potentially have a techinal impact on a language (e.g., how does it impact the programs written in that language, such as Java, C#, LISP)

What role does software security play in the stack and development of a certain application?