Final answer:
The inverted page table structure indexes page table entries by frame number and is designed to optimize memory use by sharing one table among all processes. It uses a hash table for efficient mapping retrieval.
Step-by-step explanation:
The inverted page table structure indexes page table entries by frame number rather than by virtual page number. This is a different approach compared to a traditional page table that is indexed by virtual page number. The inverted page table is used to optimize the use of memory by sharing one page table among all processes rather than having a separate page table for each process.
In systems employing an inverted page table, there is typically a single page table for all processes. This table contains an entry for each physical page frame, describing which virtual page (if any) is stored there. A hash table is often used to keep track of these mappings, allowing for efficient retrieval of the virtual page number when given a physical frame number.
The inverted page table structure indexes page table entries by frame number rather than by virtual page number. Instead of having each process maintain its own page table, the inverted page table is shared among all processes in the system. It consists of one entry per frame, containing the virtual page number and the process ID of the page that occupies that frame.