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What is the difference between process and thread?
Operating system basics question for CS freshers and backend interviews.
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KASA answer
A process has its own address space, resources, and execution state. Two processes are more isolated from each other. A thread exists inside a process and shares the same memory and resources with other threads of that process. Threads are lighter to create and switch between, but shared memory means synchronization issues can happen.
For example, a browser may run multiple processes for tabs, while each tab process can use multiple threads for rendering, networking, and JavaScript execution.
Cover these points
- Process has separate memory.
- Thread shares memory inside a process.
- Threads are lighter than processes.
- Threads need synchronization when sharing data.
- Give a practical example.
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