Because all file systems suffer from internalfragmentation, the following relation is true:A. the larger block size, the greater the internalfragmentationB. the smaller block size, the greater the internalfragmentationC. the larger block size, the smaller internalfragmentationD. there is no relation between block size andinternal fragmentation What pointer is used for writing a file?A. memory pointerB. seek pointerC. shared--file pointerD. current-file-position pointer

Pointer for Writing a File:The correct answer is: D. current-file-position pointer.This pointer,…

Answered: Because all file systems suffer from…

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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Operating system
Filesystem Accesses: Assume a filesystem that with respect to this question has already cached the root inode structure in memory, but has not yet cached any file data/content. What is the minimum number of block I/O requests that need to be submitted to a disk to access the file content of a file "/usr/frankeh/WTH". Think about the structure of inode and directories and each access required to get to the data Your answer
1:34 b a 2. Different operating systems use different file allocation techniques to store files in the secondary storage device such as HDD. One of the techniques is "Linked allocation". In this technique, each file is divided into several data blocks of same size. Each data block has a link to its next block like a singly linked list. So, the data blocks are scattered on the disk. The directory contains a pointer to the starting and the ending data block of a file. The diagram below depicts a sample linked allocation system of a file Abc.txt: Directory entry File Start End Abc.txt 100 900 Data 900 Data Data block 1 block 2 Data block 3 block N Write a Java program to implement the linked allocation of a given text file Assgn1_2.txt (uploaded with the assignment) who's each block will contain maximum 50 characters. Read the content of the given file and store it in data blocks (maximum 50 characters per block). Now show a menu that will ask the user to i) add new content at the end of…
Some file systems allow disk storage to be allocated at different levels of granularity. For instance, a file system could allocate 4 KB of disk space as a single 4-KB block or as eight 512-byte blocks. How could we take advantage of this flexibility to improve performance? What modifications would have to be made to the free-space management scheme in order to support this feature?
What is the optimum file access pattern for a chained disk allocation of files??
391. Address generating function of direct file organization is known as a. Pascal algorithm b. Hashing algorithm c. Greedy algorithm d. Short path algorithm
Figure Q5(a) shows a set of blocks of a secondary storage, each of which consists a block number. Q5 (a) 1 5 7 8. 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 Figure Q5(a) Assume that the size of each block is 512 B. How many blocks should be allocated for a file with a size of 3072 B? 2.
To what extent does disk write caching benefit from the following?
113. Banker's algorithm for resource allocation deals with a. deadlock prevention b. deadlock avoidance c. deadlock recovery d. mutual exclusion
A file system with 300 GByte uses a file descriptor with 8 direct block address. 1 indirect block address and 1 doubly indirect block address. The size of each disk block is 128 Bytes and the size of each disk block address is 8 Bytes. Find the maximum possible file size in this file system.
A disk file contains 32-byte fixed size records. Physical I/O is in terms of 512 byte blocks that are stored in an Operating System buffer. If a process sequentially reads through a file's records, what % of the read requests will result in I/O operation?

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