11. Draw and explain the IPO model.
12. What is the purpose of the API and why is it important to the computer systems?
13. List and define three types of computer categories.
14. How do communication channels enable computer and network operations?
15. What is the difference between RAM and ROM?
16. What is the purpose of the I/O interface?
17. Where does middleware reside and what is its purpose?
18. What is the difference between client-server and peer-to-peer computing?
19. Describe the top-down approach to systems analysis?
20. List and describe four basic computer operations.