Consider the following page reference string: 1 2 3 4 2 1 5 8 2 12 3 7 8 3 2 12 3 8 How many page faults would occur for the following page replacement algorithms? Assuming 4 frames. Show your work. A) Optimal B) LRU
Q: Consider the following page reference string: 1, 2, 1, 3, 2, 4, 5, 1, 4, 3, 5, 2, 1, 2, 4, 3, 5 What…
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Q: 1. Consider the page reference string 2. 3 2 3 4 2 6 7 3 3 1 2 6 4 1 0 1. The number of page frames…
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Q: s to frames. b. )increase the page fault rate. c.) decrease the page fault rate.
A: Ans-1 The aim of creating various page replacement algorithms is to "decrease the page fault rate" .…
Q: Suppose we have the following page accesses: 1 2342341 21 1. Suppose that there are also three…
A: In given question, we have few page accesses and 3 frames. We have to use FIFO Page replacement…
Q: Consider the following page reference string: 7, 7, 2, 2, 7, 3, 1, 2, 5, 3, 4, 6, 7, 7, 1, 0, 5, 4,…
A: In this question, we are given page reference strings and we have to find out number of page faults…
Q: A process refers to 5 pages, 1, 2, 3, 4, 5 in the order : 4,1,0,4,2,1,3,4,2,5,2,1,0,4,3,5,2,0,1,4.…
A: Optimal Page Replacement Algorithm: If the page from the reference string is already present in the…
Q: hms: a. Optimal page replacement b. FIFO page replacement c. LRU page replacement In each cases…
A: First-In-First-Out (FIFO) Replacement ----> 0 4 7 3 2 3 0 1 7 7…
Q: Consider the following page reference string 1 2 3 4 1 2 3 4 12 3 4 12123 1. Which of the following…
A: Option : (B) I and IV. I. The number of page faults using FIFO and LRU will be same using 3 empty…
Q: Given page reference string: 1,2,3,4,2,1,5,6,2,1,2,3,7,6,3.2,1,2,3,6 Compare the number of page…
A: Answer:)
Q: How many page faults does the Optimal Page Replacement algorithm produce"?
A: Optimal Page Replacement is the algorithm where the page which would not be used in future is…
Q: Consider page reference string : 1,2,3,2,1,5,2,1,6,2,5,6,3,1,3,6,1,2,4,3 with 3 page frames. The…
A: In optimal page replacement policy, frame which will not be used for longest time in future will be…
Q: Consider the following page reference string: 1, 2, 3, 4, 2, 1, 5, 6, 2, 1, 3, 1, 4, 6, 3, 2, 1, 2,…
A: OPT algorithm Total frames: 3 Algorithm: Optimal replacement algorithm Reference string length: 21…
Q: Consider 1, 2, 3, 4, 1, 2, 5, 1, 2 and apply FIFO page replacement algorithm with frames = 3. What…
A: GIVEN : Total frames: 3 Algorithm: FIFO String: 1 2 3 4 1 2 5 1 2 FIND : No. of page faults
Q: Consider the following page reference string: 5, 2, 3, 1, 2, 5, 3, 4, 6, 5, 7, 1, 0, 7, 4, 6, 2, 3,…
A: We are given a question on page replacement algorithm where we will be finding the number of page…
Q: Using the following page replacement algorithms, determine the number of faults in the following…
A: It is a technique used for memory management in paging of frames. During memory management, when…
Q: Consider a process that references its six pages in the order 6,1,2,3,1,2,4,5,1,3. How many page…
A: An algorithm that is used in operating system to decide which page will be replaced by the new page…
Q: Consider a reference string: 1,2,3,4,1,2,5,1,2,3,4,5. the number of frames in the memory is 3. Find…
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Q: Given a reference string and four different page replacement algorithms, each of the following lists…
A: Hey there, I am writing the required solution based on the above given question. Please do find the…
Q: Consider the following page reference string: 4, 2, 3, 1, 2, 6, 3, 4, 6, 7, 7, 1, 0, 5, 4, 1, 2, 5,…
A: In optimal page replacement algorithm, the initial page that is already present will be replaced…
Q: Consider the following page reference string: 1,0, 5, 0, 1, 5, 1,3,1, 2, 0, 5, 3,7, 4, 5,7, Assuming…
A: Objective: Given the following page reference string, 1, 0, 5, 0,1, 5, 1, 3, 1, 2, 0, 5, 3, 7, 4, 5,…
Q: Determine the number of page faults and page of hits of by optimal page replacement by considering…
A: implementation of optimal page replacement algorithm-
Q: Give a comparison of LRU and OPTIMAL algorithms in terms of Page faults with three and four frames…
A: Page fault When a running program accesses a memory page that is mapped to the virtual address space…
Q: Consider the following page reference string: 1, 2, 3, 4, 2, 1, 5, 6, 2, 1, 2, 3, 7, 6, 3, 2, 1, 2,…
A: Given:- Consider the following page reference string: 1, 2, 3, 4, 2, 1, 5, 6, 2, 1, 2, 3, 7, 6, 3,…
Q: Question Consider the following page reference string: 1, 2, 3, 4, 2, 1,5, 6, 2, 1,2, 3, 7,6, 3. 2,…
A: We are given 3 different page replacement algorithms and we are asked to calculate number of page…
Q: Consider the following page reference string: 1 2 3 4 2 1 5 6 2 1 2 3 7 6 3 2 1 2 3 6 What are the…
A: Given Data : Page reference string: 1 2 3 4 2 1 5 6 2 1 2 3 7 6 3 2 1 2 3 6 Number of frames = 4…
Q: Consider the following page reference string: 7, 2, 3, 1, 2, 5, 3, 4, 6, 7, 7, 1, 0, 5, 4, 6, 2, 3,…
A: As per given details, Total Page frames: 3 String: 7 2 3 1 2 5 3 4 6 7 7 1 0 5 4 6 2 3 0 1 Reference…
Q: Suppose we have the following page access stream: 50120304230 for a system with four frames which…
A:
Q: Consider the following page reference string 1 23 4 123 4123412123 1. Which of the following…
A: Answer :- ( B ). I and IV Introduction :- The sting of memory references is called reference…
Q: 8, 5, 1, 2, 5, 3, 5, 6, 2, 6 Assuming that all frames are initially empty, indicate the contents of…
A: In optimal page replacement algorithm, pages which will be not referred for longest time in future…
Q: 1. Consider the following page reference string: 3,2,5,1,2,3,4,6,1,7,2,1,6,1,3,7,3,2,1,7 How many…
A: Dear Student, In Least Recently Used when page fault occurs the page which has been least recently…
Q: Consider a program with seven virtual pages numbered from 0 to 6 references its pages in the order:…
A: In clock page algorithm, if a page has been referred more than once then it is given a second…
Q: Homework Part Two If we have 3 frames and the next reference string 1030421320410343210 142 Using…
A: As per our guidelines, only one question will be answered. So, please repost the remaining question…
Q: A process refers to 5 pages, 1, 2, 3, 4, 5 in the order : 4,1,0,4,2,1,3,4,2,5,2,1,0,4,3,5,2,0,1,4.…
A: Given: We are given the page reference sequence. It is also given that page numbers 1,2,3,4,5 are…
Q: Given that main memory is composed of two page frames for public use and that a seven-page program…
A: Page request A B A C A B D B A C D Page fault * * * * * * * * * * Page frame 1 A A A A A…
Q: Consider the following page reference string: 3 1 4 1 5 9 2 6 5 3 5 Assuming demand paging with…
A: Given that, The page reference string is: 3 1 4 1 5 9 2 6 5 3 5 Number of frames= 3 LRU (Least…
Q: please i need corect answaer 10. Consider the following page reference string: 3, 2, 3, 4, 2, 1,…
A: The number of page fault=7
Q: Consider page reference string : 1,2,3,2,1,5,2,1,6,2,5,6,3,1,3,6,1,2,4,3 with 3 page frames. The…
A: 1 2 3 2 1 5 2 1 6 2 5 6 3 1 3 6 1 2 4 3 3 3 3 5 5 5 5 5 5 5 3 3 3 3 3 3 3 3 2 2 2 2 2 2 2…
Q: QUESTION 2 A process refers to 5 pages, 1, 2, 3, 4, 5 in the order :…
A: Introduction of Page Replacement: In the Operating System, paging is used for memory management, and…
Q: Consider the following sequence of page accesses: 1, 4, 4, 8, 2, 6, 4, 9, 1, 3, 6, 4, 1, 2, 9…
A: Given sequence: 1, 4, 4, 8, 2, 6, 4, 9, 1, 3, 6, 4, 1, 2, 9number of frames: 3LRU(Least Recently…
Q: A process refers to 5 pages, 1, 2, 3, 4, 5 in the order : 4,1,0,4,2,1,3,4,2,5,2,1,0,4,3,5,2,0,1,4.…
A: Answer: 17
Q: 6. please using program Java How many page faults would occur for the following reference string by…
A: Given that Total frames are 3 Reference String: 2, 0, 3, 0, 4, 2, 3, 0, 1, 2, 3, 4, 0, 1,2
Q: Using the following reference string apply Optimal Page, Least Recently Used and FIFO algorithms to…
A: Optimal page : this algorithms replaces the page which will not be referred for so long in future.…
Q: Consider the following virtual page reference string: 1, 2, 3, 4, 2, 1, 5, 6, 2, 1, 2, 3, 7, 6, 3,…
A: Given page reference string 1,2,3,4,2,1,5,6,2,1,2,3,7,6,3,2,1,2,3,6 Using LRU and FCFS ,Find the no…
Q: Consider the following page reference string: 5, 3, 7, 5, 3, 6, 1, 0, 4, 6, 2, 0, 1, 27,3, 1, 4, 7,…
A: The Answer is in Below Steps
Q: string: 3,1,3,6,7,5,1,4,5,6,2,2,6,2,2,7,4,5,1,7,2 Assuming demand paging with three frames, how…
A: In optimal page replacement, page which will be not referred in the longest time will be chosen for…
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- 4. Consider the page reference string 20 2 5 3 3 5 2 20 2 1 2 4 1 0 . The number of page frames is 3. What would be the hit percentage and miss percentage generated by Least Recently Used algorithm.There are 5 page frames and 8 pages (numbered 0; 1; : : : ; 7). Assume that all frames are initially empty. The reference sequence is the following:7 1 2 3 1 4 2 0 5 6 2 5 0 3 1 2 1:(a) How many page faults will occur if the FIFO page replacement is used?(b) What if we use the "second chance" algorithm?Your answer should be justied (which references cause page faults and what is the reason).Write a program that implements the FIFO and LRU page-replacement algorithms presented in this chapter. First, generate a random page reference string to each algorithm, and record the number of page faults incurred by each algorithm. Implement the replacement algorithms so that the number of page frames can vary from 1 to 7. Assume that demand paging is used.
- Consider the following page reference string: 4, 2, 3, 1, 2, 6, 3, 4, 6, 7, 7, 1, 0, 5, 4, 1, 2, 5, 4, 4 Using the Optimal page replacement algorithms with 3 frames, show the page load order and number of page faults that would occur.Consider the following reference string CAN YOU DO LRU PLEASE 3 2 4 2 1 6 4 7 8 2 4 3 1 6 8 4 2 3 1 5 Use the algorithms below with the indicated number of frames to calculate the number of faults for each algorithm and number of frames considered. Please note that all the frames are initially empty which will cause a page fault as demonstrated in the class Algorithm Number of frames considered 3 4 5 7 FIFO 18 18 15 7 LRU 19 16 16 8 OPTIMAL REPLACEMENT 14 12 10 8Subject Test Note: - You are attempting question 12 out of 12 Consider the following page reference string 1 2 3 4 1 2 3 4 123 4 12123 1. Which of the following statements are correct? The number of page faults using FIFO and LRU will be same using 3 empty frames. The number of page faults using optimal page replacement algorithm and LRU will be same using 3 empty frames. The number of page faults using optimal page replacement algorithm will be same using 3 empty frames and 2 empty frames. The number of page faults using FIFO, LRU and optimal page replacement algorithm will be same using 4 empty frames. I. II. III. IV. (A)I and II (B)I and IV (С)I, I and IV (D)I, II and III Answer A
- Consider the following page reference string 1 2 3412 341 2 3 4 1 21 2 3 1. Which of the following statements are correct? The number of page faults using FIFO and LRU will be same using 3 empty frames. П. I. The number of page faults using optimal page replacement algorithm and LRU will be same using 3 empty frames. The number of page faults using optimal page replacement algorithm will be same using 3 empty frames and 2 empty frames. The number of page faults using FIFO, LRU and optimal page replacement algorithm will be same using 4 empty frames. II. III. IV. (A)I and II (B)I and IV (С)I, II and IV (D)I, II and IIIConsider the following reference string 3 2 4 2 1 6 4 7 8 2 4 3 1 6 8 4 2 3 1 5 Use the algorithms below with the indicated number of frames to calculate the number of faults for each algorithm and number of frames considered. Please note that all the frames are initially empty which will cause a page fault as demonstrated in the class Algorithm Number of frames considered 3 4 5 7 FIFO 18 18 15 7 LRU 19 16 16 8 OPTIMAL REPLACEMENT 14 12 10 8:Consider the following sequence of page references 9,8 ,6 ,9 ,5 ,9 ,7,8,6.7.6 .5 .Assuming that all the frames are initially empty, indicate the contents of memory after each reference .Calculate the number of page faults a. FIFO Page replacement algorithm with 4 frames: 6 9 5 9 7 6 7 5 Reference String Frame 1 Frame 2 Frame 3 Frame 4 Page Faults Page faults: b. LRU Page replacement algorithm with 4 frames: Reference 9| 5 9 7 6 6 5 String Frame 1 Frame 2 Frame 3 Frame 4
- 8.12. Consider a page reference string for a process with a working set of M frames, initially all empty. The page reference string is of length P with N distinct page numbers in it. For any page replacement algorithm, a. What is a lower bound on the number of page faults? b. What is an upper bound on the number of page faults?Consider a system with four page frames and a program that uses eight pages. Consider the reference string 0 1 7 2 0 3 1 7 0 1 7 and assume that all four page frames are initially empty. Consider the three following algorithms: a. Optimal page replacement b. FIFO page replacement c. LRU page replacement In each cases show a diagram (ASCII art recommended) that shows which pages are in which frames throughout time, and page faults at the bottom. For instance: would mean that at step 1 page 0 is referenced and loaded into frame 0, which is a page fault; then page 1 is referenced, and so on. The goal is to fill this table to see what in memory when and thus infer the number of page faults. The first 4 steps are ALWAYS the same, as above (i.e., just fill the four frames, with one page fault each time)1. find suitable frame sizes. 2. choose one frame size and make a network flow graph and interpret. select the frame size that comes the closest to meeting the 3 frame constraints. job set, tuples [[period, execution time]: j1 = [5,1] j2 [10,3] j3 = [20,4]