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5) (20 pts) Given a memory with 4 frames, the frame table, page table and reference...
Given that main memory is composed of four page frames for public use, use the following table to answer all parts of this problem: Page Frame Time When Loaded Time When Last Referenced Referenced BIT Modified BIT 0 09 307 0 0 1 17 362 1 0 2 10 294 0 1 3 160 369 1 1 The contents of which page frame would be swapped out by FIFO? The contents of which page frame would be swapped out by...
Exercise l: Suppose that we have a virtual memory space of 28 bytes for a given process and physical memory of 4 page frames. There is no cache. Suppose that pages are 32 bytes in length. 1) How many bits the virtual address contain? How many bits the physical address contain? bs Suppose now that some pages from the process have been brought into main memory as shown in the following figure: Virtual memory Physical memory Page table Frame #...
Given the following page reference string, count the number of page faults for a memory capacity of 4 frames using the CLOCK page replacement algorithm. Reference string: 0, 1, 2, 3, 0, 1, 4, 0, 1, 2, 3, 4, 5, 6, 3, 2, 1, 0. Show all work.
Main memory has 1,024 bytes, and frames are 32 bits. Assume a portion of main memory, and the page table, shown below. The frame numbers in the Page Table are shown as base 10, but all other data in the tables is either binary or hex. A TLB is not used. The virtual address space for each process is 8 pages. The first frame in memory is frame 0, but only a portion of memory is shown (not necessarily that...
Operating Systems Virtual Memory Management question Given the reference string of page accesses below, and an allocation of 3 page frames, and the Least-Frequently Used page replacement algorithm. Show the content of the frames as the references are processed, and indicate which references cause page faults. Record the #page faults. ref 1 2 3 5 4 2 5 3 4 5 1 1 3 1 4 frame1 frame2 frame3 fault(X) #faults =
Consider a computer system that uses a paging system. The memory contains 16 frames, each frame can accommodate 512 memory locations (size of frame = 512). The page table is as follows: Page Number 0 1 2 3 4 5 6 7 Frame Number 5 3 10 0 2 9 11 14 What are the physical addresses for the following logical addresses? Show your work Logical Address Physical Address 2345 1024 6780
Given the following page-reference string, show the allocation of 3 frames of memory using FIFO , LRU and OPT. How many page faults for FIFO, LRU and OPT? 3,1,2,1,3,1,4,1,3,2,4,2,5,6,4,6,2,1,6,5
36.-Assume a 32 bit memory space with 16[KB] pages/frames and a two-level page table. Answer the following questions: a).-what is the size of the page table in bytes needed for a process that has only 64[MB] of code at the start of its virtual address range? b).-how many bits are used for address (frame) offset, and how many for page table indexing (total). Assume each page table entry has 32 bits. a).-Size of page table b).-Offset bits b).-Page table indexing...
2" | Page # (10 pts)On a machine with 8 bytes page size, given the page table for a process, and 2 of these 4 entries are mapped to page frames. Frame 0 starts at physical 0 address 0. (All numbers given are in decimal.) a. What are the range(s) of logical address (decimal, byte-level) that would cause 2 a page fault? | Frame # 4 Not in main memory Not in main memory b. Convert the following logical address...
Consider the following page reference string for a three-frame memory: 6 3 1 5 3 4 3 2 5 4 3 4 5 1 5 3 1 6 3 1 Apply LRU, Clock and FIFO algorithms What will be the number of page faults for each replacement algorithm note that page faults at the beginning are counted?