Suppose the head of a moving head disk with 200 tracks numbered 0-199 is currently serving a request at track 143. It has just finished a request at track 125. If the queue of requests is kept in the FIFO order, 86,147,85,177,94,150,102,175,130 What is the total head movement to satisfy these requests for the following disk scheduling algorithms?  First Come First Served  Shortest Seek Time First  SCAN

Q: Consider a file whose size varies between 2KB and 8MB during its lifetime. It is required that the…

A: Explanation: Here, the file size varies between 2KB and 8MB during its lifetime. One can use…

Q: Consider an ordered disk queue with requests involving tracks 97,145,22,14,124,65 and 67. if the…

A: Answer the above question are as follow

Q: Suppose that a disk drive has 5,000 cylinders, numbered 0 to 4,999.  The drive is currently serving…

A: Solution: The queue of pending requests, in FIFO order, is: 2,069 1,212 2,296 2,800 544 1,618 356…

Q: Suppose that a disk drive has 200 cylinders, numbered 0 to 199. The drive is currently servicing…

A: Given that, The total number of cylinders= 200 numbered from 1 to 199 Current service request at…

Q: Suppose that a disk drive has 200 cylinders, numbered from 0 to 199. The drive is currently serving…

A: Answer: I have given answered in the handwritten format in brief explanation.

Q: Find out the total Head Movement of the Disk Head for the following request queue: 98, 183, 37, 122,…

A:

Q: The disk has 200 tracks numbered from 0-199. The head pointer is currently positioned at 112 moving…

A: Here in this question we have given some disk request and we have asked to find total head movement…

Q: Assume the disk contains 100 cylinders (0-99), the head starts at 20, and the queue contain the…

A: The tracks needed here, For this question

Q: A UNIX file system (with indexed allocation, inodes with 12 direct, 1 single-indirect, 1…

A: A UNIX file system with indexed allocation, inodes with 12 direct, 1 single-indirect, 1…

Q: Suppose that a disk drive has 1,024 cylinders, numbered 0 to 1,023. The driver is currently serving…

A: We need to implement the mentioned algorithms on the given string.

Q: Consider a disk drive with 2,000 cylinders, numbered from 0 to 1,999. The request queue has the…

A: A scheduling algorithm is the algorithm which tells us how much CPU time we can allocate the…

Q: Consider a disk queue with requests for I/O to blocks on cylinders.98 183 37 122 14 124 65 67.…

A: Solution is in Step 2.

Q: ppose that a disk drive has 5,000 cylinders, numbered 0 to 4999. The drive is currently serving a…

A: I have solved all the 4 parts and have provided step wise solution for it. In the end we will…

Q: suppose that a disk drive has 200 tracks, numbered 0 to 199. The drive is currently serving a…

A:

Q: Suppose that a disk drive has 200 cylinders num- bered 0 to 199. The drive is currently serving a…

A: The Answer is

Q: Suppose that a disk drive has 5,000 cylinders, numbered 0 to 4,999.  The drive is currently serving…

A: Solution: The queue of pending requests, in FIFO order, is: 2,069 1,212 2,296 2,800 544 1,618 356…

Q: Consider a disk queue with requests for 1/O to blocks on cylinders 82,170,43,140,24,16,190 The head…

A: Let's understand step by step :   1.  FCFS FCFS means First Come First Serve. The request which…

Q: Suppose a file system is based on the indexed allocation strategy for managing blocks. Assume each…

A: The solution for the above given question is given below:

Q: head is at cylinder 130. The request queue is given as follows: 150, 40, 350, 100, 280 For each of…

A: Here in this question we have given a disk with 400 cylinder and we have also given some request to…

Q: Assume a file system with block size of 512 words. A process P1 reads a whole file F1 of length 8000…

A: Answer: Option d None of the above In Option a, process P1 and P2 reads 1 block. It is incorrect…

Q: In our discussion of the SSTF disk scheduling algorithm, we stated that the problem of starvation…

A: The Shortest Seek Time First (SSTF) is a disk-scheduling algorithm that operates with the concept of…

Q: Consider a 200 cylinder hard disk with one arm. Suppose the following cylinder requests arrive in…

A: Consider a 200 cylinder hard disk with one arm. Suppose the following cylinder requests, made by…

Q: . Suppose that a disk drive has 200 cylinders, numbered 0 to 199 and the disk head is initially at…

A: We are going to find out the distance in terms of cylinder using following disk scheduling…

Q: Consider an ordered disk queue with requests involving tracks 97,145,22,14,124,65 and 67. if the…

A: The answer is given in the below step

Q: Suppose that a disk drive has 5,000 cylinders, numbered 0 to 4,999. The drive is currently serving a…

A: The total distance that the disk arm moves to satisfy all the pending requests for each of the…

Q: Suppose that we have an ordered file with r = 30000 records stored on a disk with block size B =…

A: The Answer is in given below step

Q: Suppose the head of a moving-head disk with 200 tracks numbered 0 to 199 is currently serving a…

A: Given: Assume the head of a moving-head disc contains 200 tracks numbered 0 to 199, and it is now…

Q: a) The physical size of a given file is 16384 bytes in a magnetic disk, with each cluster consisting…

A: Solution:   a) 1. How many sectors and clusters will the above file take? Number of sectors in one…

Q: Consider a file system that uses indexed file allocation. Disk block size is 1K-byte, and a file…

A: Given that, Disk block size= 1K byte= 1024 bytes File pointer size= 8 bytes Number of direct…

Q: Suppose that we have a magnetic disk with the following structure: Each sector is fixed at 512…

A: a) Number of sectors in one cluster = 4 Size of each sector = 512 Bytes Size of each cluster =…

Q: Hi, please solve it correctly ,else i will downvote Consider the following disk request sequence…

A: Solution :-  Given,  Total number of tracks = 100 but it should be 200 because request sequence is…

Q: Consider a file system that uses indexed allocation with a maximum of one index node per file.…

A: Solution::   The first thing you need to decide/figure out is the size of an index (2 bytes or 4…

Q: b) Consider a disk queue with requests for I/O to blocks on cylinders 108, 193, 51, 132,  24, 134,…

A: C-LOOK Disk Scheduling Algorithm- Circular-LOOK Algorithm is an improved version of the LOOK…

Q: (a) Discuss, with the help of a diagram, why a hierarchical structure is used for system…

A: Disk scheduling :It is used to access data from the disk. Computer architecture: It is the ways by…

Q: Suppose that a disk drive has 5,000 cylinders, numbered 0 to 4,999. The drive is currently serving a…

A: EXPLANATION: C-SCAN: C-SCAN moves the head from one end to the other, serving all demands.…

Q: Stored on a disk. Suppose that we have an ordered file of 30,000 reconds with block size. 1024…

A: Here we have to find the average number of blocks to search for a record with and without index. It…

Q: Consider an ordered disk queue with requests involving tracks 97,145,22,14,124,65 and 67. if the…

A: C-SCAN is a varient of scan designed to provide a more uniform wait time.

Q: 8. Consider one disk with 400 cylinders, numbered 0 to 399. Assume the current position of head is…

A: Solution:- Above all question can be solved as:-

Q: Calculate the number of disk tracks traversed using the FCFS, SSTF, SCAN, and LOOK algorithms for…

A: Performance: The speed of the CPU is a key factor that often decides the performance of the system.…

Q: 8. Consider one disk with 400 cylinders, numbered 0 to 399. Assume the current position of head is…

A:

Q: Consider a disk queue holding requests to the following cylinders in the listed order: 116, 22, 3,…

A:

Q: Suppose that a disk drive has 5,000 cylinders, numbered 0 to 4,999. The drive is currently serving a…

A:

Q: Suppose that a block is 1K Byte and that a disk address is 4 bytes. Suppose that files are…

A: file: Collection of logically related entites. All attributes of file are called file context.

Q: SSTF scheduling algorithm, a) What is the order that the requests are serviced, assuming the disk…

A: EXPLANATION SSTF stands for Shortest Seek Time First. As the name suggests the tracks that are…

Q: Consider a disk queue holding requests to the following cylinders in the listed order: 116, 22, 3,…

A: Answer to the above question is in step2.

Q: Requests are not usually uniformly distributed. For example, a cylinder containing the file system…

A:

Q: A. Suppose the following disk request sequence (track numbers) for a disk with 200 tracks is given:…

A: Below I have provided the handwritten solution of the given question:

Q: Q: In this problem you are to compare reading a file using a single-threaded file server and a…

A: Answer:-

Fundamentals of memory

A collection of connected storage devices form the memory unit. It is a space to store data and instructions required for processing. Information is stored in a memory unit in the form of bits. There are two types of memory namely: