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STORAGE AND FILE SYSTEM • Example 9-A 32-bit Berkeley UNIX file system has a block size...
A UNIX-type file-system uses a disk block size of 1KB, 128 byte inodes, and 32 bit...
A UNIX-type file-system uses a disk block size of 1KB, 128 byte inodes, and 32 bit disk addresses. If the inode contains 64 bytes of data, 8 direct, 1 indirect, 1 double-indirect, and 1 triple- indirect blocks, apart from other file information. How many disk blocks would be required for storing files of sizes (a) 1 byte (b) 1024 bytes (c) 64 KB (d) 1MB ?
Q1) A particular implementation of UNIX operating system provides the file structure modelled in the Figure...
Q1) A particular implementation of UNIX operating system provides the file structure modelled in the Figure 1. Here the i-node for the file contains certain information such as the access permissions for the file. This is followed by the entries that contain information about where the file is located on the storage device. The first 10 entries are the addresses of blocks where actual data for the file are stored. If block can contain 512 bytes of information, then these...
Given a Ext3 filesystem that uses: - 32 bit addresses, - 512 byte blocks on disk, - 16 direct add...
Given a Ext3 filesystem that uses: - 32 bit addresses, - 512 byte blocks on disk, - 16 direct addresses and - up to a level 3 indirection Answer the following questions: 1) How many blocks does a 12KiB file need? 2) What is the largest file size (in KiB) that does not need indirect block references? 3) What is the largest file size (in KiB) possible using only single indirection? 4) A file that is 1104 bytes in size,...
a drive has 512 sectors per track a block size of 512 bytes and spins at...
a drive has 512 sectors per track a block size of 512 bytes and spins at 12000 rpm. (a)what is the max file size in terms of blocks for a unix file system with 1024 byte blocks and 32 bit bloack addresses if every i-node has 10 direct block addresses, 1 indirect block address, 1 double indirect block address and 1 triple indirect block address. (B) consider the prefix code : b: 1111 a:1110 i:1101 j:1100 s:101 t:100 1:01 3:00...
Question 3: Consider a 32-bit physical address memory system with block size 16 bytes and a...
Question 3: Consider a 32-bit physical address memory system with block size 16 bytes and a 32 blocks direct mapped cache. The cache is initially empty. The following decimal memory addresses are referenced 1020, 1006, 1022, 5106, 994, and 2019 Map the addresses to cache blocks and indicate whether hit or miss. Note: You must use the hexadecimal approach in solving this question. You must also show the computations of dividing the memory address into tag bits, cache index bits,...
Consider a file system that uses 1KB blocks and 16-bit disk addresses. If inodes hold 8...
Consider a file system that uses 1KB blocks and 16-bit disk addresses. If inodes hold 8 disk addresses for data blocks, one single-indirect block address, and one double-indirect block address. What is the maximum file size?
Part B Consider a file system that uses a structure similar to an i-node with the...
Part B
Consider a file system that uses a structure similar to an i-node with the following differences. If the file size is less than 100 bytes, the data is stored directly in the i-node. If it is larger, there are 8 direct links (point to a data block), 2 single-indirect links, 1-double indirect links and 1 triple indirect link. What is the largest file size that can be indexed in this system? Assume the block size is 1024 bytes....
Computer Science Operation System question. I will give thumb up, thank you! Consider a file system that uses inodes to represent files. This file system has 16 direct disk blocks, as well as single,...
Computer Science Operation System question. I will give thumb
up, thank you!
Consider a file system that uses inodes to represent
files. This file system has 16 direct disk blocks, as well as
single, double, and triple indirect disk blocks. This file system
is illustrated in the below figure. Please notice that the tables
pointed to by the indirect pointers are full sized blocks that only
stores pointers.
mode owners (2) timestamps (3) size block count data data data direct...
11. Consider a file system that uses a structure similar to an i-node with the following...
11. Consider a file system that uses a structure similar to an i-node with the following differences. If the file size is less than 100 bytes, the data is stored directly in the i-node. If it is larger, there are 6 direct links (point to a data block), 1 single-indirect links, 2-double indirect links and 1 triple indirect link. (a) What is the largest file size that can be indexed in this system? Assume the block size is 512 bytes....
Problem 1. Consider a disk with block size B=1024 bytes. A block pointer is P =...
Problem 1. Consider a disk with block size B=1024 bytes. A block pointer is P = 8 bytes long, and a record pointer is R =7 bytes long. A file has r=5,000,000 EMPLOYEE records of fixed- length. Each record has the following fields: NAME (30 bytes), SSN (9 bytes), DEPARTMENTCODE (9 bytes), ADDRESS (35 bytes), PHONE (9 bytes), BIRTHDATE (8 bytes), SEX (1 byte), JOBCODE (4 bytes), SALARY (4 bytes, real number). An additional byte is used as a deletion...
Q1) A particular implementation of UNIX operating system provides the file structure modelled in the Figure 1. Here the i-node for the file contains certain information such as the access permissions for the file. This is followed by the entries that contain information about where the file is located on the storage device. The first 10 entries are the addresses of blocks where actual data for the file are stored. If block can contain 512 bytes of information, then these...
Question 3: Consider a 32-bit physical address memory system with block size 16 bytes and a 32 blocks direct mapped cache. The cache is initially empty. The following decimal memory addresses are referenced 1020, 1006, 1022, 5106, 994, and 2019 Map the addresses to cache blocks and indicate whether hit or miss. Note: You must use the hexadecimal approach in solving this question. You must also show the computations of dividing the memory address into tag bits, cache index bits,...
Part B
Consider a file system that uses a structure similar to an i-node with the following differences. If the file size is less than 100 bytes, the data is stored directly in the i-node. If it is larger, there are 8 direct links (point to a data block), 2 single-indirect links, 1-double indirect links and 1 triple indirect link. What is the largest file size that can be indexed in this system? Assume the block size is 1024 bytes....
Computer Science Operation System question. I will give thumb
up, thank you!
Consider a file system that uses inodes to represent
files. This file system has 16 direct disk blocks, as well as
single, double, and triple indirect disk blocks. This file system
is illustrated in the below figure. Please notice that the tables
pointed to by the indirect pointers are full sized blocks that only
stores pointers.
mode owners (2) timestamps (3) size block count data data data direct...
11. Consider a file system that uses a structure similar to an i-node with the following differences. If the file size is less than 100 bytes, the data is stored directly in the i-node. If it is larger, there are 6 direct links (point to a data block), 1 single-indirect links, 2-double indirect links and 1 triple indirect link. (a) What is the largest file size that can be indexed in this system? Assume the block size is 512 bytes....
Problem 1. Consider a disk with block size B=1024 bytes. A block pointer is P = 8 bytes long, and a record pointer is R =7 bytes long. A file has r=5,000,000 EMPLOYEE records of fixed- length. Each record has the following fields: NAME (30 bytes), SSN (9 bytes), DEPARTMENTCODE (9 bytes), ADDRESS (35 bytes), PHONE (9 bytes), BIRTHDATE (8 bytes), SEX (1 byte), JOBCODE (4 bytes), SALARY (4 bytes, real number). An additional byte is used as a deletion...
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