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The different paging techniques are
1. Multilevel paging or hierarchical paging method: In definite cases the page table may consist up to 1 million entries. This would be as well large to accommodate in the main memory. One simple solution with this problem is to divide the page table into smaller pieces.
2. Hashed page table method: A general method for handling address spaces larger than 32 bits is to use a hashed page table with the hash value being the virtual page number. Every entry in the hash table contains a linked list of elements that hash to the same location.
3. Inverted page table method: An inverted page table has one entry for every real page of memory. Every entry consists of the virtual address of the page stored in threat real memory location, along with information about the process that owns that page.
4. Shared pages method: Shared page tables are typically implemented as multiple virtual addresses that are mapped to one physical address.
5. Demand paging method: This is alike to a paging system with swapping. Processes inhabit on the secondary memory. When we would like to execute a process, we swap it in to the memory.
What is input output operation ?
What is a binary Semaphore?
diffenciet between least recently used and not recently used
Virtual File System serves two important functions. 1. It divides file-system-generic operations from their execution by defining a clean VFS interface. 2. The VFS is based
What is a Relocatable program? The Relocatable programs can be loaded almost anywhere in memory.
operating systems and its types together with its design issues and their examples.
Hashed page table method A general approach for managing address spaces larger than 32 bits is to use a hashed page table with the hash values being the virtual-page number.
. A paper mill produces two grades of paper viz., X and Y. Because of raw material restrictions, it cannot produce more than 400 tons of grade X paper and 300 tons of grade Y paper
What are the benefits of multiprogramming? Responsiveness : Multithreading is an interactive application may permit a program to continue running even if part of it is block
Operations that are to be performed on a directory are Search for a file: We are able to find all files whose names match a exact pattern. Create a file: New files requi
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