Assume a logical address space consists of 4 pages of 4096 words each and is mapped to a physical memory space of 256 frames. What is the size of the physical address space? 12 bits 14 bits 20 bits 8 bits
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Assume a logical address space consists of 4 pages of 4096 words each and is mapped to a physical memory space of 256 frames. What is the size of the physical address space?
12 bits
14 bits
20 bits
8 bits
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- Assuming a 4-KB page size (4096 bytes), what are the page numbers and offsets for the following address references (provided as decimal numbers); assume that the memory is byte addressable. a. 3000 b. 40000 c. 200000 d. 6000000Suppose a computer system uses 16-bit addresses for both its virtual and physical addresses. In addition, assume each page (and frame) has size 256 bytes. How many bits are used for the page number? How many bits are used for the offset? With this system, what’s the maximum number of pages that a process can have? Suppose that each entry in the page table comprises 4 bytes (including the frame number, the valid bit, and miscellaneous “bookkeeping bits”). An OS uses an array to store the page table. What is the size of the page table? Furthermore, suppose the first 6 pages of a process map to frames 222 to 227 (as decimal numbers), and the last 5 pages of the process map to frames 1 to 5 (also decimal numbers). All other pages are invalid. Draw the page table, including the valid bit and the frame number.Suppose the physical address of a memory location is 33330 H and the offset is 1111H. What is the base address (segment number) of the segment? What is the highest address in that segment (assume non overlapping segmentation)?
- Suppose the RAM for a certain computer has 4M words, where each word is 16 bits long. What is the capacity of this memory expressed in bytes? If this RAM is byte addressable, how many bits must an address contain? If this RAM is word addressable, how many bits must an address contain?What is the difference between bit address 7CH and byte address 7CH? What is the specific location of bit address 7CH in memory?What is the minimum number of address bits that must be used in order to hold a total of 1024K words?
- Consider a logical address space of 256 pages with a 4-KB page size, mapped onto a physical memory of 64 frames. (book: 8.23) How many bits are required in the logical address? How many bits are required in the physical address?What is the maximum number of 16-bit words that can be stored in a 2^32 byte physical memory?17 Consider a logical address space of 8 pages of 1024 words each, mapped into a physical memory of 32 frames. How many bits are used in the logical address and how many bits are used in the physical address? 8 bits and 32 bits 10 bits and 10 bits 8 bits and 10 bits 13 bits and 15 bits
- Suppose a computer system uses 16-bit addresses for both its virtual and physical addresses. In addition, assume each page (and frame) has size 256 bytes. How many bits are used for the page number? How many bits are used for the offset? 8 bits each. With this system, what’s the maximum number of pages that a process can have? 256 Suppose that each entry in the page table comprises 4 bytes (including the frame number, the valid bit, and miscellaneous “bookkeeping bits”). An OS uses an array to store the page table. What is the size of the page table? 1024 Bytes Furthermore, suppose the first 6 pages of a process map to frames 222 to 227 (as decimal numbers), and the last 5 pages of the process map to frames 1 to 5 (also decimal numbers). All other pages are invalid. Draw the page table, including the valid bit and the frame number. DONE Translate the following virtual addresses to physical addresses, and show how you obtain the answers. (Hint: You do not need to convert…6. Consider a logical address space of 16 pages of 2048 words each, mapped onto a physical memory of 4 frames. (a) How many bits are needed for addressing the total logical address? (b) How many bits are needed to indicate the page number? (c) How many bits are needed for addressing the physical address?Given a virtual memory of size 4 GiB, physical memory of size 512 KiB, and page size equal to 4 KiB. How many bits are used to specify a physical page number?