II. (a) An OS is using two-level paging to implement a 28-bit virtual address space per process. The page size is 256-bytes, and the machine does not have a TLB. Explain the steps involved in looking up the virtual address Ox03bf04d, when all pages are present in memory. (2 points) (b) For the system above, what is the maximum number of page faults that could be generated in response to a memory access? (2 points)