Can you explain the virtual memory?

Related questions

1. Why is virtual memory used?
2. What is the benefit of virtual memory?
3. What is Dev MEM?
4. What is virtual memory and its advantages and disadvantages?
5. What is offset MMAP?
6. How is mapping done in virtual memory?
7. Is malloc a system call?
8. How does MMAP work in Linux?
9. What is Caddr_t?
10. What is MMAP file?

Tags

1. #enlarging
2. #where
3. #increases
4. #because
5. #computer
6. #available
7. #space
8. #address
9. #places
10. #finite
11. #stored
12. #comes
13. #possible
14. #amount
15. #memory
16. #virtual
17. #programs
18. #running