logical page is not currently in the physical main memory, no frame number is specified for that logical page. Page Frame 0 1 2 ♡2 3 4 5 6 7 8 9 10 11 ~ 3 12 N 13 14 15 1 7 0 2 5 32 4 6
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1. Assume that P2 issues the logical address 0xD98A. What is the logical page number contained in the given logical address, in hexadecimal?
Answer is: 0x 6
But I do not knot well how to calculate
Step by step
Solved in 3 steps
- Suppose we have a virtual address of 26 bits in a byte addressable machine. Page size is 8K bytes. Assume each page table entry is 4 bytes in this case. a. Design a two-level page table (Suppose we need to fit each page table into a physical frame). b. How many physical memory frames are needed to maintain the page tables for a process of 512KB?For an old computing system with 2K bytes physical memory, and the virtual address has 13bits. Suppose that the size of page/frame is 256 bytes. For a process A, it has its codes and data inpage 0, 1, 2, 10, 11, 28, 29, where pages 0, 1, 10, 29 are in frame 1, 3, 4 and 6, respectively.Moreover, frame 0 contains kernel OS code/data and all other frames are free.a. Show the page table and the content of each PTE for process A;b. Use a figure to illustrate the address translation for virtual address 1110000100000 and explainwhat happens during the translation (interaction among page table, physical memory, disk, andoperating system);c. Suppose that there is a TLB with 4 entries and the current content has the mapping informationfor pages 0, 1. Draw a new figure to illustrate the translation of address 101000011000 andexplain what happens during the translation process.Consider a logical address space of 32 pages of 1024 words each, mapped onto a physical memory of 8 frames. How many bits are there in logical address and how many bits are there in physical address?
- Assume a process containing 5 pages with 1024 bytes per page and physical memory with 10 page frames. Frames and pages are of the same size. Given the following page map table (PMT): a) determine the physical address associated with the logical address of page 1, offset 100? b) what is the logical address associated with the physical address 2300? Please dont over complicate this question!!1. Consider a computer system with a 30-bit logical address and 4-KB page size. The systemsupports up to 512 MB of physical memory. How many entries are there in each of the following?Assume that each page table entry is 4 Bytes.c. A conventional single-level page table?d. An inverted page table?e. A two-level hierarchical page table? 2. Consider a virtual memory system with a 50-bit logical address and a 38-bit physical address.Suppose that the page/frame size is 16K bytes. Assume that each page table entry is 4 Bytes.a. How many frames are in the systems? How many pages in the virtual address space for aprocess?b. If a single-level page table is deployed, calculate the size of the page table for each process.c. Design a multilevel page table structure for this system to ensure that each page table can fitinto one frame. How many levels do you need? Draw a figure to show your page systemsConsider a logical address space of 256 pages with a 4-KB page size, mapped onto a physical memory of 64 frames. a. How many bits are required in the logical address? b. How many bits are required in the physical address?
- In an architecture with 18 bits of "virtual address" width, "page size" is given as 1024 bytes and "physical address" width is given as 15 bits. TLB has a “2-way set associative” structure and contains a total of 16 data blocks. What is the TLB Tag field width in this architecture? A) 4 B) 5 C) 6 D) 7 E) 8Suppose that a machine has 42-bit virtual addresses and 32-bit physical addresses.{a} How much RAM can the machine support (each byte of RAM must be addressable)?{b} What is the largest virtual address space that can be supported for a process?{c} If pages are 2 KB, how many entries must be in a single-level page table?{d} If pages are 2 KB and we have a two-level page table where the first level is indexed by 15-bits, then how many entries does the first-level page table have?{e} With the same setup as part {d}, how many entries are in each second-level page table?{f} What is the advantage of using a two-level page table over single-level page table?Consider a logical address space of 512 pages with a 2-KB page size, mapped onto a physical memory of 64 frames. How many bits are required in the logical address?
- Given a 32-bit virtual address space and a 24-bit physical address, determine the number of bits in the VPN, VPO, PPN, and PPO for the following page sizes P. Drag the appropriate labels to their respective targets.Suppose you have a byte-addressable virtual address memory system with 16 virtual pages of 64 bytes each and 4-page frames. Assuming the following page table, answer the questions below: Page # Frame # Valid bit 0 2 1 1 3 1 2 - 0 3 0 0 4 1 1 5 - 0 6 - 0 7 - 0 A. What physical address corresponds to the virtual address 0x42? Answer should be in hexadecimal number. (if the address causes a page fault, answer as "page fault" with the proper explanation) B. What physical address corresponds to the virtual address 0x72? Answer should be in hexadecimal number. (if the address causes a page fault, answer as "page fault" with the proper explanation) C. What physical address corresponds to the virtual address 0x84? Answer should be in hexadecimal number. (if the address causes a page fault, answer as "page fault" with the proper explanation)Suppose you have a byte-addressable virtual address memory system with 16 virtual pages of 64 bytes each and 4-page frames. Assuming the following page table, answer the questions below: Page # Frame # Valid bit 0 2 1 1 3 1 2 - 0 3 0 0 4 1 1 5 - 0 6 - 0 7 - 0 a) Show the virtual address format, including the name and size of the fields. b) Show the physical address format, including the name and size of the fields. c) What physical address corresponds to the virtual address 0x00? Answer should be in hexadecimal number. (if the address causes a page fault, answer as "page fault" with the proper explanation) d) What physical address corresponds to the virtual address 0x42? Answer should be in hexadecimal number. (if the address causes a page fault, answer as "page fault" with the proper explanation) e) What physical address corresponds to the virtual address 0x72? Answer should be in hexadecimal number. (if the address causes a page fault, answer as "page…