Which of the following is NOT an advantage of using shared, dynamically linked libraries as opposed to using statically linked libraries?

Dynamic linking can cause security concerns because

Consider a machine with 64 MB physical memory and a 32-bit virtual address space. If the page size is 4KB, what is the approximate size of the page table?

Suppose the time to service a page fault is on the average $$10$$ milliseconds, while a memory access takes $$1$$ microsecond. Then a $$99.99$$% hit ratio results in average memory access time of.