direct pointers, 1 ct and 1 quadruple size is 1 kbyte. If es of a file that can pinter is 4 terabytes ny bits are required
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- Suppose a Unix Inode has 10 direct disk block pointers, one single indirect block pointer, one double indirect block pointer, and one triple indirect block pointer. For convenience, each index table has 256 = 28 entries and each block has 1K = 210 bytes. What is the maximum size of a Unix file in Kbytes?In a main memory-disk virtual storage system, the page size is 1KByte and the FIFO algorithm is used for page replacements. A given program has been allocated three page frames in the main memory and it makes the following 16 memory references when it starts executing (the addresses are given in decimal):500, 2000, 2500, 800, 4000, 1000, 5500, 1500, 2800, 400, 5000, 700, 2100, 3500, 900, 2400 Fill in the contents of the three page frames after each memory reference in a table and calculate the hit ratio. Hint: denote by 'a' the page consisting of locations 0 through 1023 in memory. Similarly, b: 1024-2047, c: 2048-3071, d: 3072-4095, e: 4096-5119 and f: 5120-6143. Round to three decimal places.Consider a file system that uses inodes to represent files. Disk blocks are 16 KB in size, and a pointer to a disk block requires 4 bytes. This file system has 12 direct disk blocks, as well as single, double, and triple indirect disk blocks. What is the maximum size of a file that can be stored in this file system? Show calculation steps
- Multi-Answer Question Figure below illustrates the block diagram of a Unix file system. Two processes perform open file commands to open files "foo" and "ba and perform operations on these two files. Suppose that Process 1 is a "producer process" and Process 2 is a "consumer process" that communicate data using file "/../../bar" and tables shown in figure. Select all correct answers. System-wide open-tile table Per-process open-file table-1 File system 3 file descriptor Super block 5 4 Process 1 FCB's 6 5 ... fd1 = open(/../../too, Read-only) fd2 = open(/../../bar, Read-and-write) wc = write (out-fd, buffer, #-of-bytes) 7 6 Free blocks 8 7 9 File blocks 10 Per-process open-file table-2 11 3 FCB: File Control Block Process 2 4 Buffer: size 1024 bytes fd3= open(/../../bar, Read-only) fd4 = open(/../../too, Read-and-write) rc = read (in-td, butter, #-of-bytes) 5 6 "Per-process open-file tables" allow processes to open a file several times with different file-descriptors and for different…A disk has a capacity of two tera-byte size. Say the file system uses a multi-level inode structure for locating the data blocks of afile.The inode stores pointers to data blocks, including a single indirect block, a double indirect block, and several direct blocks in the 64 B of available space.Now, it is given that the disk has a block size of 512 B. The maximum file size that can be stored in such a file system in MB (round off upto 2 decimal places).Suppose that there is a file system with blocks of 512 bytes in size. For each inode, there are 20 direct blocks, 2 singly-indirect blocks, and 2 doubly-indirect blocks. The size of a pointer is 4 bytes. Calculate the maximum possible size of a file in bytes. Show your work.
- On a 16 GB hard disk drive (HDD), each cluster consists of 32 sectors and each sector has a fixed size of 512 bytes. A text file with a size of 150,000 bytes is to be stored. a. i.What is the size of the slack space, in bytes, once the file has been stored?What kind of file access pattern is best for chained file allocation on disk?Code a descriptor that describes a memory segment that begins at location 0005CF00h and ends at location 00060EFFh. The memory segment is a data segment that grows upward in the memory system and can be written. The segment has a user level privilege (lowest) and has not been accessed. The descriptor is for an 80386 microprocessor.
- Assume an inode has 14 direct pointers and two pointers to indirect blocks. The indirect blocks are 4KB big, and pointers are 4-bytes in size. How many data blocks can be accommodated by this file in total?Bitmap data format lets the OS track free and full partitions. How do bitmaps show allocation unit processes or holes?Answers: *process bit *hole bit *free bit *flag bitQuestion#4: Consider a file system that uses inodes to represent files. Disk blocks are 8 KB in size, and a pointer to a disk block requires 4 bytes. This file system has 12 direct disk blocks, as well as single, double, and triple indirect disk blocks. What is the maximum size of a file that can be stored in this file system?