Question 1930 – Nielit STA 17-12-2017
December 9, 2023Question 1927 – Nielit STA 17-12-2017
December 9, 2023Question 1931 – Nielit STA 17-12-2017
Operating system maintains the page table for:
Correct Answer: A
Question 9 Explanation:
Role of the page table
→ In operating systems that use virtual memory, every process is given the impression that it is working with large, contiguous sections of memory.
→ Physically, the memory of each process may be dispersed across different areas of physical memory, or may have been moved (paged out) to another storage, typically to a hard disk drive.
→ When a process requests access to data in its memory, it is the responsibility of the operating system to map the virtual address provided by the process to the physical address of the actual memory where that data is stored.
→ The page table is where the operating system stores its mappings of virtual addresses to physical addresses, with each mapping also known as a page table entry (PTE).
→ In operating systems that use virtual memory, every process is given the impression that it is working with large, contiguous sections of memory.
→ Physically, the memory of each process may be dispersed across different areas of physical memory, or may have been moved (paged out) to another storage, typically to a hard disk drive.
→ When a process requests access to data in its memory, it is the responsibility of the operating system to map the virtual address provided by the process to the physical address of the actual memory where that data is stored.
→ The page table is where the operating system stores its mappings of virtual addresses to physical addresses, with each mapping also known as a page table entry (PTE).
each process
each thread
each instruction
each address