Question 1: OS Concepts                                                                 (10 + 10 + 10 = 30 marks)

    1. Please describe what an operating system is from both a Top-Down view and a Bottom-Up view.
    2. What is a Linux distribution? Besides CentOS and Ubuntu which we learned in this unit, please list at least 5 other popular Linux distributions including their names, founders, initial release years, release dates of the latest versions, and project/product website URLs.
    3. What are the functions of an OS kernel. Discuss what are Microkernel and Hypervisor kernel structures and their pros and cons.


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