What is virtualisation? what is paging? what is thrashing? what is bellady's anonaly? and some more OS questions

Question

Accepted Answer

Virtualisation is the process of creating a virtual version of something, such as a server, storage device, network or operating system.

Virtualisation allows multiple operating systems to run on a single physical machine.
Paging is a memory management scheme that allows the operating system to move pages of memory between main memory and secondary storage.
Thrashing occurs when a computer's operating system spends a lot of time swapping data between RAM and virtual memory, slowing down performance.
Belady's Anomaly is a phenomenon in which increasing the number of frames allocated to a process may increase the page faults for that process.
Other OS questions may include topics like process scheduling, memory management, file systems, and security.

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