When a page fault takes place, which method raises the chance of determining where a page reference occurred in a working set? Increasing the number of history bits and decreasing the frequency of interrupts Decreasing the number of history bits and decreasing the frequency of interrupts Decreasing the number of history bits and increasing the frequency of interrupts Increasing the number of history bits and increasing the frequency of interrupts A programmer has written a module to manage memory using the 50% rule. What is the programmer attempting to accomplish? Eliminate external fragmentation o Eliminate internal fragmentation O Allocate a partition to each process Cut lost memory usage to less than one-third A programmer observes I/O performance issues on a macOS and needs to trace multiple processes simultaneously using DTrace. Which DTrace script should the programmer use? Odtruss O execsnoop Olosnoop O opensnoop What describes the relationship between frames and pages in memory paging? Frames are small logical blocks of memory that are allocated to a larger physical memory page. Frames are large blocks of physical memory that contain multiple smaller pages of logical memory. Frames are large logical blocks of memory that contain multiple pages of physical memory. Frames are physical memory blocks that are the same size as the pages, which are logical memory blocks. What is a concept of shared pages as a memory-management algorithm for multiprogrammed operating systems? They increase multiprogramming in the same program by using the same code, which consumes a limited amount of memory. They increase multiprogramming by shifting multiple processes into execution in such a way that all processes can run at the same time. They copy processes stored in a backing store to memory, increasing the amount of multiprogramming at one time. They use a modifying reentrant code that increases multiprogramming in the same program at the same time. Which syste service of the operating system do processes use to inge information with other sses in shared memory? Resource allocation Input/output (1/0) operations Program execution Communication