1. 1- Imagine a Web server that maintains a table in which client IP addresses are

   mapped to the most recently accessed Web pages. When a client connects to the server, the server looks up the client in its table, and if found, it returns the registered page. Is this server stateful or stateless?

2. 2- How do you set a priority for a thread? What is the default priority? (Choose a programming language that supports Multithreading to get into more details).

3. 3- What is the difference between a mutex and semaphore?