i dont need explanations just answer plz

21. Mirroring (RAID 1) is a method of saying thod of saving duplicate copies of data from one file storage location to another storage device in real time 22. A process is an executing program. 23. Primary memory supports immediate execution of programs in the CPU, while secondary memory provides long term storage of programs and data. 24. Interrupts are processed by the CPU in the order of their priority and their severity. 25. A Stack is a reserved area of level 1cache memory that temporarily stores data held in the CPU's registers in a first-in-last-out basis during interrupt processing