Questions

I take examinations in OPP by means of a paper
(approx 5-10 pages).
Incidentally, I do a follow up by means of an oral
examination that consists of some 'knowledge' questions
and a discussion about the topic of their paper.

You may let the students prepare a short essay (1 A4)
about one of the questions that you find with each chapter,
and elaborate on this in a discussion.

To mention some topics, and suggest some possible questions:

* Discuss the potential for reuse of object technology.
* Discuss the issues that arise in the transition from C to C++.
* Relate OO approaches in analysis, design and implementation.
* How well does the object paradigm match the requirements
  for distributed systems.
* Sketch your favorite design method.
* What benefits does an object oriented approach have?
* Find some arguments against an object-oriented approach.
* What relations can exist between objects.
* On what principles would you base metrics foor OO systems?
* How well does a formal approach match OO design?

Actually, the list is endless, taken as variations on a common theme.
Personally, I prefer an in-depth discussion to check the understanding
students have of the main issues such as
  
  * subclassing vs subtyping
  * the notion of contracts -- as a design method
		and as an implementation device
		to check run-time consistency
  * extensions to the 'classical' object model
  * the behavioral interpretation of types
  * composition mechanisms: idioms and 'patterns'
  * events: as a means to 'objectify' complex behavior

Hopefully, these hints provide some help.
Don't hesitate to contact me.
I am certainly willing to think of a more elaborate
suite of questions.