Q2. [ Consider a 48-bit virtual address space. The system uses a page size of 4KB and two-level hierarchical paging. Therefore, the page table is divided into 4KB pages and the logical address has the following format: P1 a) [ Below are the relevant tables. The values are provided in hexadecimal. Outer Page Table Page A of Page Table 0 Page A of PT 0 FEE 1 Page B of PT 1 3BC X (rest are invalid) Size of P1 = 000000000000 P2 2 3 X 000003003102 000001002777 What is the size (number of bits) of each of the following logical address fields: bits bits Offset 124 C3D (rest are invalid) Size of P2 = Size of Offset= b) In what is the physical/logical address corresponding to each of the following shown logical/physical addresses. Answer "Bad logical address" if the logical address is invalid. Logical Address bits Page B of the Page Table 0 330 1 44B 2 X Physical Address 44B3BC E55 (rest are invalid)
Q2. [ Consider a 48-bit virtual address space. The system uses a page size of 4KB and two-level hierarchical paging. Therefore, the page table is divided into 4KB pages and the logical address has the following format: P1 a) [ Below are the relevant tables. The values are provided in hexadecimal. Outer Page Table Page A of Page Table 0 Page A of PT 0 FEE 1 Page B of PT 1 3BC X (rest are invalid) Size of P1 = 000000000000 P2 2 3 X 000003003102 000001002777 What is the size (number of bits) of each of the following logical address fields: bits bits Offset 124 C3D (rest are invalid) Size of P2 = Size of Offset= b) In what is the physical/logical address corresponding to each of the following shown logical/physical addresses. Answer "Bad logical address" if the logical address is invalid. Logical Address bits Page B of the Page Table 0 330 1 44B 2 X Physical Address 44B3BC E55 (rest are invalid)
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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