4.7 Provide two programming examples in which multithreading does not provide better performance than a single-threaded solution.

4.8 Describe the actions taken by a thread library to context-switch between user-level threads.

4.9 Under what circumstances does a multithreaded solution using multiple kernel threads provide better performance than a single-threaded solution on a single-processor system?

4.10 Which of the following components of program state are shared across threads in a multithreaded process?

4.11 Can a multithreaded solution using multiple user-level threads achieve better performance on a multiprocessor system than on a single-processor system? Explain.