interrupt, There are 3 major methods that can be used of allocating disk space; one is contiguous allocation method. Search for one of the other 2 methods (Linked Allocation and Indexed Allocation) and compare its performance with the performance of contiguous allocation method.
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- Question: The purpose of this project is to design and implement a distributed storage system. The system's architecture is inspired bythe abstract architecture for distributed file systems. Among the components, we have a client and multiple instances of a server. We adopt an asynchronous peer-to-peerreplication among the server instances with a replication factor of three. The system supports two operations: read and writeobjects. Each object is represented in a JSON format and stored in a local file for each instance of the server. Note that the fileshave a limited size of 30 MB. As well each object has a key (a string) attached to it. Finally, we use Kafka as a middlewarebetween the client and the server(s) To write an object, the JSON content and the key are sent to the server through Kafka. When the write operation succeeds, theclient receives an acknowledgement from each server. A write operation with an existing key replaces the existing object.Moreover, the client sends a…Consider a file system that uses contiguous allocation method. For a disk consists of 100 data blocks, each block is 4KB. What is the maximum and minimum number of files of size 15KB can it save? Find the number of files the disk able to support using (1) link allocation and (2) index allocation, assuming the address is 32 bit.There are 3 major methods that can be used of allocating disk space; one is contiguous allocation method. Search for one of the other 2 methods (Linked Allocation and Indexed Allocation) and compare its performance with the performance of contiguous allocation method.
- Explain why peripherals are not connected directly to the system bus? Compare between the different Input-Output control techniques: programmed I/O, interrupt, DMA, and Channel IO. There are 3 major methods that can be used of allocating disk space; one is contiguous allocation method. Search for one of the other 2 methods (Linked Allocation and Indexed Allocation) and compare its performance with the performance of contiguous allocation method.Implementation of a Disk-based Buffer Pool A buffer pool is an area of main memory that has been allocated for the purpose of caching datablocks as they are read from disk. The main purpose of a buffer pool is to minimize disk I/O.Tasks: Implement a disk-based buffer pool application based on the below three buffer poolreplacement schemes: FIFO (first in, first out), LRU (least recently used), and LFU (Leastfrequently used) buffer pool replacement strategies.FIFO (First In, First Out): the oldest data block in the buffer pool is replaced.LRU (Least Recently Used): the least recently accessed data block in the buffer pool is replaced.LFU (Least Frequently Used): the least frequently accessed data block in the buffer pool isreplaced.Initially, the buffer pool is free. Disk blocks are numbered consecutively from the beginning ofthe file with the first block numbered as 0. When I execute your program,First, it asks the user to input the following parameters:o ?: number of blocks in the…Q1. Different algorithms are used for scheduling the disk head so that seek time may be reduced. Calculate total number of heads movement for the following algorithms for the given disk queue with requests for I/O to blocks on cylinders in that order. Queue = 98, 183, 37, 122, 14, 124, 65, 67 If the disk head is initially at cylinder 53 and direction is Right. FCFS – First-Come, First-Served - FCFS
- CSC 472 Introduction to Database Systems Project Consider the CLOCK page replacement policy. Assume that there are only 3 page slots available in the buffer pool. If a page reference sequence is: 0, 4, 1, 4, 2, 4, 3, 4 (in order from left to right). What happens when the second 4 (i.e., the 4 underlined with blue color) is referenced? Group of answer choices Its reference bit is set to 1. Its reference bit is set to 0. It is evicted. Nothing changes.Allocation Methods. Explain how one can access ith block in contiguous allocation? Explain how one can access ith block in linked list allocation? Will you use linked allocation for an application with direct access? Explain. Compare FAT with I-node regarding a) RAM space requirements b) number of SEEKS required to read a Byte of information for each method. Assume a hard disk has D Blocks. how many entries will there be on FAT? Each block can hold B Bytes. It takes A Bytes to write one address. Or you can say the address pointer takes A Bytes. How many addresses can be contained in one block? How many blocks you will need to accommodate a File of F Bytes. Where F > B > A. Define and explain Bit vector and linked list approach to free-space management. Write their differences. Another set of questions I-node has file attributes. Users sometimes save same file in multiple names? In that case, do you need multiple I-nodes? yes or no- Explain your understanding. A file…Discuss the First-Come, First-Served (FCFS) disk scheduling algorithm. Please explain this algorithm using your own words in such a way that everyone with some understanding of computers and computer programming will understand it.Then provide an example of application of your algorithm for a disk queue with 8 requests (e.g.: 98, 18, 370, 122, 14, 12, 6, 67). Choose your own disk queue with 8 requests. Compute the total head movement for your example. Describe the computation process in detail, don't just list the final result.
- The following figure depicts an i-node: File attributes Address of block 0 Address of block 1 : Address of block 15 Block of pointers : Disk block with additional addresses This i-node contains 16 direct addresses and a pointer to the block with additional ad- dresses. Addresses take 16 B each and block size is 4 KiB = 4096 B. (a) Draw a figure that depicts the i-node and the corresponding data blocks for a file of size 15 KiB. (b) What is the largest possible file size if the block with additional addresses is not used? What if we also use the block with additional addresses (where the block with additional addresses cannot further be extended)? (c) How much space on the disk is occupied by a file of size 75 KiB?Assume one file has r = 10^6 records. Each record takes R = 100 bytes, of which 10 bytes are for the key of record. Suppose the key balues range from 1 to 1,000,000, inclusive. Assume the block size B is 1000 bytes for all files, and that an address (block pointer, tree node poiinter, or data record pointer) takes 10 bytes. How many data block accesses on the average are needed to fetch a record by using linear search?Paging: Select all of the following statements that are true. Systems that use paging but do not support inverted page tables maintain at least one separate page table for each process. The frame table is a system-wide data structure. When paging is applied, the selected page size determines which part of a virtual address belongs to the page number and which to the offset. The page size may differ from the frame size. The Translation Look-aside Buffer (TLB) represents a page directory for all pages in the system. Paging is prone to internal fragmentation.