please solve all parts...

Q2. a. If you are entrusted to design an MMU for AMD64 (OOPS!), what type of a paging system will you suggest for this machine which has a 64 bit address space? (5) b. What is the main benefit of using multilevel page tables? (5) C. Discuss some merits and de-merits of multitasking and multithreading in the context of paging. (5) d. We have two systems running LINUX. One that uses paging and the other one do not have an MMU so it cannot use paging. Can you elaborate the difference of behavior of the fork() system call in both the systems. (10) e. Kernel has two types of memory pools, paged and non-paged. Can you name one part of the kernel code which is mandatory to be kept in the non-paged pool