Summary:
- The article discusses chapters 4 and 5 of the book "Operating Systems: Three Easy Pieces" by Remzi H. Arpaci-Dusseau and Andrea C. Arpaci-Dusseau.
- Chapter 4 focuses on virtualization, which is the process of creating a virtual version of a physical resource, such as a computer, operating system, or storage device.
- Chapter 5 covers concurrency, which is the ability of a system to handle multiple tasks or processes at the same time.