a) Prepare a page trace analysis and count the number of page faults by First-In-First-Out (FIFO) and Least-Recently-Used (LRU) page replacement algorithms, assuming 3 page frames to be allocated. Then, compute the hit ratio for each algorithm. Reference string: 4 2 1 2 4 3 2 4 6 2

Q: e number of frames increases, the number of page faults also increases. 2. Which of the following…

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Q: The following page reference changes occur during a given time interval. 4 2 0 1 2 5 1 4 0 2 3 5 7…

A: Page replacement algorithms are used in order to replace an existing page in the memory with a new…

Q: The page fault frequency algorithms Physical memory is initially empty. The following reference…

A: GIVEN: The page fault frequency algorithms Physical memory is initially empty. The following…

Q: four algorithms used for the selection of a page to replace.

A: details of four algorithms used for the selection of a page to replace

Q: Part 1 Describe the Working Set Page Replacement Algorithm, ensuring that in your explanation, you…

A: The Working Set Page Replacement Algorithm In the purest form of paging, processes are started up…

Q: Assome that a computer system is having 4 page fames for holding process pages in the man memory.…

A: In FIFO algorithm, frame which has been occupied first will be first choosen for replacement.  In…

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: Operating Systems Physical memory consists of 4 page frames, initially all empty. The following…

A: 1. Optimal page replacement:  During  page fault, the page is  getting swapped with the  page which…

Q: Discuss situations under which the most frequently used page-replacement algorithm generates fewer…

A:

Q: resident under the optimal page replacement algorithm. Indicate when page faults happen. Show which…

A: Physical memory consists of 4 page frames, initially all empty. The following reference string is…

Q: Which of the following term is used to monitor the connection between a page of a process to a frame…

A: Page offset can be defined as the least significant or the least important bits which specifies the…

Q: Assume that main memory is composed of only three page frames for public use and that a seven-page…

A: In this question, we are asked about number of faults and also compute the failure and success…

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: My student claimed that the three fundamental page replacement algorithms (FIFO, LRU, and optimal)…

A: Page Replacement: Computers are designed with many levels of memory. As the memory's transmission…

Q: n FIFO page replacement algorithm, when a page must be replaced ______ Select one: a.newest page is…

A: intro In FIFO page replacement algorithm, when a page must be replaced ______ Select one: a.newest…

Q: Discuss situations in which the most frequently used (MFU) page-replacement algorithm generates…

A: Situation in the most recently used page replacement algorithm generates fewer page fault than the…

Q: Assume that a computer system is having 4-page frames for holding process pages in the main memory.…

A: We need to compute number of page hits and faults for given string using fifo and optimal.

Q: a. Based on the following data, determine the replacement algorithm use: 2 1 2 4 5 3 4 2 3 1 5 1 4…

A: Page replacement algorithm, in a operating system that must uses paging to deal with the virtual…

Q: Q2: Consider the following page reference string 1, 2, 4, 2, 1, 4, 6, 7, 4, 7, 3, 1, 2, 5, 6, 7.…

A: A page fault is a scenario when the requesting page is previously not in RAM reference Let's see the…

Q: Given the verage size of a process is P the page size is S, and the size of a page table entry is e,…

A: The answer is

Q: Is it feasible that Belady's anomaly will alter the optimal page replacement method? Please justify…

A: Start: This approach is used by the OS to replace pages that will not be used for the foreseeable…

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: 5.01-5 Dijkstra's Algorithm (1, part 5). Consider the network shown below, and Dijkstra's link-state…

A: Given:

Q: A process refers to 5 pages, A, B, C, D, E in the order : A, B, C, D, A, B, E, A, B, C, D, E. If the…

A: Answer :

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: QUESTION 3 A process refers to 5 pages, 1, 2, 3, 4, 5 in the order :…

A: Given: We are given a page reference sequence where page numbers are given.  Distinct page numbers…

Q: Assume that a computer system is having 4-page frames for holding process pages in the main memory.…

A: In FIFO algorithm, frame which has been occupied first will be first choosen for replacement.  In…

Q: 6- Consider the following page reference string: 3,2,1,3,4,1,6,2,4,3,4,2,1,4,5,2,1,3,4, how many…

A: In the  operating system concepts uses paging for virtual memory management and  page replacement…

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: FIFO page replacement algorithm: It is a page replacement algorithm that replaces pages appearing on…

Q: If lengthy ranges of consecutive logical page numbers are often translated to consecutive physical…

A: User may see the logical address, which is a virtual address. Logical addresses are created by the…

Q: QUESTION 1 v Question Completion Status: Consider the following page reference string: 4, 3, 6, 4,…

A: The  First In First Out is the simple page replacement algorithm.In this FIFO algorithm the page…

Q: ge faults using the OPTIMAL, LRU, FIFO page replacement algorithms with pure demand paging. Assume…

A: Solution - In the given question, we have to find the number of page faults using the OPTIMAL, LRU,…

Q: Assignment 2 Page Replacement A computer has four page frames. The time of loading, time of last…

A: The answer is given below:-

Q: 1, 2, 3, 4, 2, 1, 5, 6,2, 1, 2, 3, 7, 6, 3, 2, 1, 2, 3, 6 How many page faults would occur for the…

A: In LRU, pages which are referred recently will be given preference  In FIFO algorithm, page which…

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 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: Discuss situations under which the least frequently used page replacement algorithm generates fewer…

A: LFU:- The LFU page replacement algorithm stands for the Least Frequently Used. In the LFU page…

Q: Consider 1, 2, 3, 4, 1, 2, 5, 1, 2 and apply FIFO page replacement algorithm with frames-3. What is…

A: By considering 1, 2, 3, 4, 1, 2, 5, 1, 2 and applying FIFO page replacement algorithm with…

Q: Consider the following page reference string 1 2 34 12 3 4 1 2 3 41 21 2 3 1. Which of the following…

A: Given:

Q: 5. Consider the following page-reference string: 4, 5, 3, 1, 3, 4, 2, 5, 6, 4, 1, 0 If the number of…

A: In this algorithm, pages are replaced which would not be utilized for the longest duration of time…

Q: ) A paging scheme with THREE (3) frames initially empty are considered. Trace the allocation of…

A: The given problem is related to CPU scheduling where the page references are given and the…

Q: Assume that a computer system is having 4-page frames for holding process pages in the main memory.…

A: In FIFO algorithm, frame which has been occupied first will be first choosen for replacement.  In…

Q: 2A. Apply FIFO , LRU and OPTIMAL page replacement algorithms for following page reference string…

A: FIFO:- FIrst in first out page replacement algorithm uses order of pages in first come first serve.…

Q: Consider the following page reference string: 1, 0, 5, 0, 1, 5, 1, 3, 1, 2, 0, 5, 3, 7, 4, 5, 7,…

A: Given that, Consider the following page reference string: 1, 0, 5, 0, 1, 5, 1, 3, 1, 2, 0, 5, 3, 7,…

Q: Assume that main memory is composed of only three page frames for public use and that a seven-page…

A: Let's understand step by step: When any page requests is generated and if page is available then…

Fundamentals of Input and Output Performance

The I/O subsystem is a component of computer system design that uses buses to assist communication between the Central Processing Unit, Computer Memory/Storage, and Input and Output Devices (that is known as peripheral devices). The I/O subsystem includes disc controllers, tape drives, discs, system buses, and other devices. The I/O database application reads and writes drives using the operating system windows I/O.