a) what is the minn problem of contguous allocation? b) Dock paging remove all fragmentation problems? c) why would we ever want a Zlevel hierarchical page table? d) How is the maximum number of frames should be allocated to a process related to the instruction set? Explain your answer as we discussed in the class? e) what is the pure demand paging? f) what a memory mangement unit (MMu) is responsible for? How is the page size is related to internal fragmentation? b) explain how it is possible to detcet the thrashing problem as we discussed in the class wich replacement model may cause thrashing and why