What is the purpose of the valid-invalid bit? To control access to the page To verify an entry is a valid logical address To determine if the entry uses segmentation or paging schema To allow direct access to memory Which type of code is non-self-modifying and allows two or more processes to execute it at the same time? Reentrant code Error-correcting code Kernel code Source code Which approach can be used to handle address spaces larger than 32 bits and contains a link list of elements to the same location? A hashed page table A forward-mapped page table A hierarchical page table An inverted page table What is a major benefit of virtual memory? o It allows programmers to code to physical memory limitations. It allows programs to be larger than the physical memory. o It allows programs to utilize less total memory. o It allows for easier implementation. Which page replacement algorithm is the easiest to implement and removes pages from the head of the stack while inserting new pages into the tail of the FIFO LRU o MRU