Question 2: This diagram shows an example of memory configuration under dynamic partitioning, aftera number of placement and swapping-out operations have been carried out. Addresses go from left toright; gray areas indicate blocks occupied by processes; white areas indicate free memory blocks. Thelast process placed is 2-Mbyte and is marked with an X. Only one process was swapped out after that.4MM X 5M8M2M 4M3Ma. What was the maximum size of the swapped-out process?b. What was the size of the free block just before it was partitioned by X?C.A new 3-Mbyte allocation request must be satisfied next. Indicate the intervals of memorywhere a partition will be created for the new process under the following four placementalgorithms: best-fit, first-fit, next-fit, worst-fit. For each algorithm,

Certainly, I can provide a more detailed explanation of the memory configuration and the placement…

Answered: Question 2: This diagram shows an…

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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Briefly outline the idea of the BestFit memory allocation strategy in the context of a variable partitioning scheme and explain its disadvantages.
The index node (inode) of a hypothetical file system has 20 direct, 256 double-indirect and 2 triple-indirect pointers. If system is word addressable and each word is equal to 4 bytes. The disk block size is 2 KW and the disk block address 8 Word long. The maximum possible file size is (rounded off to 1 decimal place) GB (answer up-to 1 decimal places).
Answer the given question with a proper explanation and step-by-step solution. Please answer this C buffer overflow question
Q e
2. Suppose we have the diagram of memory shown below under a dynamic partitioning scheme. Blue areas represent blocks occupied by processes, blanks are holes (with sizes in Mbytes as indicate), The cross-hatched region is the location of the most recently loaded process. It is the only process in that region of memory. Its size is 5 M-byte. Only one process was swapped out after that. What is the maximum size of the swapped-out process? What is the size of the free block just before it was portioned by the crosshatched process? What algorithm was used to place the 5 Mbyte process? Why? 12 34 3 4 06 20
For Heap File with a page directory, assume that a page can contain up to 100 directory entries and a page can contain 1000 records, for a file of 1,000,000 records, what is the number of pages to store these records, assuming that on average data pages are filled up 70%? With this data page utilization, what is the number of pages to store the directory, assuming that each directory page is full? Assuming both the directory and the file are stored on disk, what is the I/O cost to insert one record in worst case, and in the average case?
Find the attached file.
3. Consider a memory management unit that uses segmentation with:
There are three possible placement algorithms in implementing dynamic partitioning. Summarize how these three differ based on how they process blocks.
iz Instructions through the questions for each of the sections. You may submit this exercise twice. Consider a memory of size 8KB (8192 bytes) that allows dynamic, variable sized partitioning among processes and uses a linked list to keep track of free spaces (hereafter referred to as the free list) in the memory at any given time. Assume that there are 6 processes and assume that their memory size requirements (in bytes) are as given below: P1: 500, P2: 600, P3: 1300, P4: 2000, P5: 100, P6: 200 Assume that the initial state of the free list is as shown below (BA is the base address and Sz is the size of each free space): BA: 0; Sz: 1100 BA: 1200: Sz: 600 BA: 2000; Sz: 1800→BA: 6000; Sz 400 in its initial state Assume that the next fit policy
Consider a file system on a disk that has both logical and physical block sizes of 512 bytes. Assume that the information about each file is al ready in memory. For each of the three allocation strategies (contiguous, linked, and indexed), answer these questions: a. How is the logical-to-physical address mapping accomplished in this system? (For the indexed allocation, assume that a file is always less than 512 blocks long.) b. If we are currently at logical block 10 (the last block accessed was block 10) and want to access logical block 4, how many physical blocks must be read from the disk
In the working set model, the idea is to examine the most recent A page references. It is also known as an approximation of the Program's Locality. If the total demand is greater than the total number of available frames (D > m), then it will cause thrashing, because in this case, some processes will not have enough frames. Below you see 3 processes and their expected memory references during their execution. When will the thrashing happen to occur according to the Working set model? Assume total memory (m) is 13 and Delta (A ) is 5. Time: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 2 6 2 2 6 2 6 2 1 2 4 3 5 4 5 4 6 P1= I 8 6 I 8 6 I 9 4 9 8 I 6 9 9 9 9 P2= P3= 6 2 3 2 6 6 6 6 6 2 1 4 2 2 2 2 2

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