{"id":396,"date":"2024-06-28T13:08:06","date_gmt":"2024-06-28T13:08:06","guid":{"rendered":"https:\/\/study.madeeasy.in\/?p=396"},"modified":"2025-07-16T14:44:41","modified_gmt":"2025-07-16T09:14:41","slug":"what-is-page-fault-in-os-operating-system","status":"publish","type":"post","link":"https:\/\/www.madeeasy.in\/study\/cs-it\/operating-system\/what-is-page-fault-in-os-operating-system","title":{"rendered":"What is Page Fault?"},"content":{"rendered":"\r\n

Each page table entry has a valid bit, it indicates whether the corresponding page is currently in memory. If the page is not in memory, a page fault has occurred and the control is trapped to the OS. During address translation, if valid\/invalid bit in page table entry is 0, a page fault has occurred.<\/p>\r\n

What is File Allocation Methods and its types?<\/span><\/h2>\r\n

The main problem is how to allocate space to a file so that disk space is utilized effectively and file can be accessed quickly. There are three major methods of allocating disk space:<\/p>\r\n

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  1. Contiguous allocation<\/li>\r\n
  2. Linked allocation<\/li>\r\n
  3. Indexed allocation<\/li>\r\n<\/ol>\r\n
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