What is the total size (in bytes) of the page table for the virtual memory with the following parameters (assume all the virtual pages are in use): 32-bit virtual byte address 4KB page size 30-bit physical byte address 4-bit page status for valid, protection, dirty and use No disk addresses are stored in the page table

What is the total size (in bytes) of the page table for the virtual memory with the following parameters (assume all the virtual pages are in use): 32-bit virtual byte address 4KB page size 30-bit physical byte address 4-bit page status for valid, protection, dirty and use No disk addresses are stored in the page table

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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A computer has a 32-bit virtual address space and 1024 byte pages. A page table entry takes 4 bytes. A multilevel page table is used because each table must be contained within a page. How many levels are required?
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Below you see a sequence of events to handle a page fault. Order the steps (1 to 5) to present the correct sequence for handling a page fault. -Read the page in the frame -Execute the instruction that caused the page fault again. (Restart the instruction that caused the page fault) -Find an empty frame. -Find page on disk -Set the valid bit to 1
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Question options: Assume the following situation: Pages are 8k Virtual addresses are 24 bits Physical addresses are 32 bits How many bits of the virtual address are the offset? How many bits of the physical address are the offset? In the page table for each process, what's the number of rows (in k, where 1k = 1024)?Assume the page table only needs to map to the physical page number plus it needs 5 bits of additional information per entry. How many columns are there in the page table in bits (i.e., how wide is it, that is the number of bits of physical page + the extra bits above)?
A certain computer provides its users with a virtual-memory space of 232 bytes. The computer has 218 bytes of physical memory. The virtual memory is implemented by paging, and the page size is 4096 bytes. A user process generates the virtual address 11123456. 5.3 Under what circumstances do page faults occur? Describe the actions taken by the operating system when a page fault occurs.
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