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General/Miscellaneous Introduction HTML GET vs. Difference between a left join and a left outer join? SQL Server Transaction Oracle Transaction MySQL Transaction DB2 Transaction Concurrent Update Problem How to Tune Database Performance Database Full Table Scan What is cost based optimization? However, what happens when my programs want to access memory address 0xFFFFFFFFF? http://ndsman.net/virtual-memory/virtual-memory-pc.php

What does shady mean? virtual-memory mmu asked Nov 18 at 12:49 André Rosa 85 0 votes 2answers 34 views How to determine the maximum number of cache misses that occur through the virtual to physical The case is that process run a sub-test which loads/unloads a DLL dynamically, during the test a lot of memory is reserved and committed(... There is dirty bit for example which is used whether to write that page back to hard disk or not but I don’t think it is what determines the owner process. http://www.sanfoundry.com/operating-system-questions-answers-virtual-memory/

Virtual Memory Exam Questions And Answers

So unless you've deliberately told your Operating System to do so, it will probably not have 64 GB of total Virtual Memory. Do vultures hunt? What is a turnkey solution?

If only 20 bits are used for storing the physical address, why would we take up an entire 4 bytes for the page table entry? How to properly localize numbers? Answer: A working set model is a set of information at a given time as a collection of pieces of information referenced by a process on a time interval. In Microsoft Excel 2010, "new Comment" Option Could Be Found Under --------------- Tab A quick question, let's say there is not much space for new memory allocations in the physical memory, in this case there should be some pages swapped back to secondary storage.

SQL: Having vs Group By SQL: Group By with multiple columns SQL - Select Distinct and Order By SQL - Order By default sort order Derived table vs subquery Correlated vs Virtual Memory Questions And Answers Page tables imply that a memory reference requires two memory accesses. entire thread D. http://www.programmerinterview.com/index.php/operating-systems/how-virtual-memory-works/ Clearly, it would be ridiculous to use two 64-bit (really only 48, but still) addresses to map every byte rather than two 36-bit page addresses for every 4kB (or 1MiB) page.

Note that the page table needs enough entries to map the entire virtual address space since it is accessed using virtual page numbers. In Excel, By Default The Numeric Values Appears In ---------------------------- Picking somebody's brain? Also, I've found a block diagram showing all virtual addresses pointing to physical through a page table, and from there they are mapped to main memory and disk address; mapped to a) first in first out algorithm b) additional reference bit algorithm c) least recently used algorithm d) counting based page replacement algorithm View Answer Answer:c Explanation:None.

Virtual Memory Questions And Answers

Is there a plant that eats frogs? http://unix.stackexchange.com/questions/313489/how-can-a-process-eat-more-less-virtual-memory-according-to-top-then-the-page It throws a OutOfMemory type of exception which says I don’t have any memory which the given address can address. Virtual Memory Exam Questions And Answers Meaning of “fly by night”? In Unix Operating System, Files Can Be Deleted Using The ------------------------------ Command static Find if string contains another string - php How to delete an element from an array in php?

He lives in Bangalore and delivers focused training sessions to IT professionals in Linux Kernel, Linux Debugging, Linux Device Drivers, Linux Networking, Linux Storage & Cluster Administration, Advanced C Programming, SAN http://ndsman.net/virtual-memory/virtual-memory-low-fix.php Solved examples with detailed answer description, explanation are given and it would be easy to understand. 1. Operating Systems Operating System Interview Questions How Virtual Memory Works Paging and Page Faults Purpose of Swapping Thread vs. The pager concerns with the: A. Virtual Memory Mcq

Alien number systems - Are decimals special? Gave a clear picture of the inner working of C language design. — Shivanshu - Netapp The course was well designed and coverage was satisfactorily deep. c++ winapi memory-management allocation virtual-memory asked Dec 1 at 1:24 Mikubyte 33 1 vote 1answer 47 views What Alloc API may call VirtualAlloc/reserve memory internally? http://ndsman.net/virtual-memory/virtual-memory-mac-os-x.php Simulate plenty of memory references .

RAM). Identify Which Of The Below Mentioned Is A Storage Device? Difference between a left outer join and right outer join? I understand that a page fault occurs when the CPU demands a page, but it is not present in the RAM, and has to be ...

first page of a process View Answer Workspace Report Discuss Answer & Explanation Answer: Option A Explanation: None.

Sanfoundry Global Education & Learning Series – Operating System. Hot Network Questions Employee has issues with proper grammar after numerous verbal and written warnings Prove that odd polynomials have at least one root. Moreover, it displaces data in the cache with new data that is unlikely to be accessed soon by the CPU. Memory Paging Is A Desired Process Because It Speeds Up System Performance Is Google auto-complete based on past queries?

Using US "chip & signature" Credit Cards abroad in "chip & PIN" countries What is the Maximum Type Depth? An alternate method is simply to mark the blocks from I/O buffers as uncacheable . Concentric rings of security and capability lists are more fined-grained alternatives, allowing more than two levels of protection. Check This Out In FIFO page replacement algorithm, when a page must be replaced a) oldest page is chosen b) newest page is chosen c) random page is chosen d) none of the mentioned

Advanced PHP Interview Questions And Answers Advanced PHP Interview Questions And Answers Part 2 Advanced PHP Interview Questions And Answers Part 3 How to return an array from a PHP function Where is the best place to exchange money in Granada, Spain? primary memory B. One optimization is to use hashing to restrict the number of page table entries to the number of physical pages.

Windows and the Windows logo are trademarks of the Microsoft group of companies. Then why not tell a friend about us, or simply add a link to this page from your webpage using the HTML below. What country has the most arable land? Does the Company I work for matter?

A TLB, which caches previous translations, can be effective in reducing memory references to the page table. Here's the list of Best Reference Books in Operating System.

To practice all areas of Operating System, here is complete set on 1000+ Multiple Choice Questions and Answers on Operating System. none of the mentioned View Answer Workspace Report Discuss Answer & Explanation Answer: Option B Explanation: None. A process is thrashing if a) it is spending more time paging than executing b) it is spending less time paging than executing c) page fault occurs d) swapping can not

Question 3 Is there one big giant page table which includes all the pages for every process or each process has its own page table? What is a "haunt"? In it, you'll get: The week's top questions and answers Important community announcements Questions that need answers see an example newsletter By subscribing, you agree to the privacy policy and terms It abstracts away the actual size of the memory installed.

Meaning of "changing of the guard"? This is called an inverted page table .