A disk contains total 200 tracks and Request Queue contains tracks 80, 160, 41, 136, 22, 18, 192. Apply FCFS and SCAN and find total track movements if head start position is at 50. Compare the results and Discuss which algorithm is better to apply?
Q: Consider a magnetic disk drive with 8 surfaces, 512 tracks per surface, and 64 sectors per track.…
A:
Q: Suppose that a 5 MB file consisting of 1 KB logical blocks is stored on a disk drive with the…
A: Average seek time , assuming the disk head starts at track 0 Rotation speed = 8000 rpm Number of…
Q: This is the specification of the Toshiba MK5059GSXP internal hard drive: Calculate the…
A:
Q: Select the correct answer: The illustration with a request queue (0-199), by using the SCAN…
A: Question about calculating head movement of cylinders Request queue(0-199) Using SCAN disk…
Q: Suppose Disk drive has 300 cylinders. The current position of head is 90.The queue of pending…
A: As per QnA guidelines, only first question is answered.
Q: Example- 5.8 A hard disk with one platter rotates at 15,000 rpm and has 1024 and has 1024 tracks,…
A: solution : as the data given in the question ,here is the answers
Q: one of the following is considered an application of a stack a. execute printing jobs in a printer…
A: Required: one of the following is considered an application of a stack a. execute printing jobs in a…
Q: Total average time to satisfy a request
A: Given, Average Seek time = 4 ms Number of tracks per sector = 500 Each sector store 512 bytes of…
Q: Consider a single-platter disk with the following parameters: rotation speed: 7200 rpm; number of…
A: Given Data: Rotation Speed = 7200 rpm No. of tracks on one side of platter = 30000 No. of sectors…
Q: Different algorithms are used for scheduling the disk head so that seek time may be reduced.…
A: Given question has asked to calculate total number of heads movement for the following algorithms…
Q: Q2:- Suppose there are 100 tracks in a particular disk, explain:T If the read/write head is…
A: In FCFS algorithm, the requests are served in the order of arrival. The track head moves to the…
Q: Different algorithms are used for scheduling the disk head so that seek time may be reduced.…
A: note: we are not allowed to solve more than 3 subparts in one question. please post them separately.…
Q: Consider a filesystem that uses inodes to represent files. Each inode contains pointers to 12 direct…
A: Number of direct disk blocks= 12 Number of single indirect blocks= 1 Number of double indirect…
Q: Disk requests are received by a disk drive for cylinders 13 , 6 , 1 , 29 , 28 , 8 in that order and…
A: Given data:- Disk requests are received by a disk drive for cylinders 13 , 6 , 1 , 29 , 28 , 8 in…
Q: serving a request at track 143, and the 05. Suppose that a disk drive has 5000 tracks The drive is…
A: The Answer is
Q: Logic XOR operation of (11101010)2 & (10101010)2 has a result of"? Explain your answer. A page…
A: Logical XOR operation of the following : 11101010 10101010 ------------------ 01000000…
Q: To access data in a hard disk, it requires the time to move the head to A. TASK: the desired track…
A: Data :- 5400 RPM 3 ms avg. Seek time 100 MB/ s transfer rate = 100000 kb/s 0.2 ms controller…
Q: isk_scheduler { condition q; position = busy = 0 move_to(dest
A: Shortest seek time first (SSTF) algorithm selects the disk I/O request which requires the least disk…
Q: Consider a RAID-4 disk configuration involving five disks A, B, C, D and E where disk E stores the…
A: About RAID-4 disk
Q: Q2:- Suppose there are 100 tracks in a particular disk, explain: STY If the read/write head is…
A: FCFS stands for First-Come-First-Serve. It is a very easy algorithm among the all-disk scheduling…
Q: 2. Consider a single-sided disk with one recordable surface where the tracks are numbered from 0 to…
A: Question from disk scheduling policies. We are given few disk track requests and we have to trace…
Q: The monitor below is an attempt to implement the SSFT algorithm. monitor disk_scheduler { condition…
A: Shortest seek time first (SSTF) algorithm selects the disk I/O request which requires the least disk…
Q: Consider a magnetic hard disk with a seek time of 8 ms, a data transfer rate of 1 Mbyte/second…
A: The answer is given below:-
Q: A disk drive has 256 cylinders, with the number The cylinder starts at 0 and ends at 255. The…
A: Here, we will draw cylinder movement diagram. And will compute total seek time of each algorithm.…
Q: Suppose on-demand paging is employed in addition to TLB caching. The time for a TLB hit is T= 1 ns,…
A: Probability of TLB miss = 1 - probability of TLB Hit = 1- 0.9 = 0.1 Probability of No page fault =…
Q: Different algorithms are used for scheduling the disk head so that seek time may be reduced.…
A: Shortest Seek Time First : In this disk scheduling algorithm, it starts from the head position to…
Q: . Assume last request serviced was at track 345 and current head position is 5. Tracks are: 123,…
A: Given, Number of cylinders = 1000 (0 to 999) Tracks : 123, 874, 692, 475, 105, 376 Scan disk…
Q: Assume that you have an empty buffer pool of size 4 pages and will access this access pattern
A: Consider, the buffer is full, so the first page is evicted. The second page is evicted and so on,…
Q: A processor sends 40 disks I/Os per second, these requests are exponent-distributed, and the average…
A: The Answer is
Q: uppose the read/write head of a disk is sitting at track 8. Requests to access he following tracks…
A: Here in this question we have given 8 request to be serviced. Currently head pointer is at 8.using…
Q: (A Task): To access data in a hard disk, it requires time to move the head to the desired track…
A: Here, I have to provide a solution to the above question.
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: Let us assume a disk with rotational speed of 15,000 rpm, 512 bytes per sector, 400 sectors per…
A: a) Answer : T = transfer time = b/rN Where b = number of bytes to transfer r = rotation speed and N…
Q: Assume that you have a disk that has 191 tracks (numbered 0- 190) and the header current position is…
A: FCFS: First Come First Serve It is similar to FIFO. It is simple, fair approach but perhaps not the…
Q: An encryption mode Accepts 3 parameters on the stack 32 bit OFFSET of a BYTE array (this array…
A: As you have not mentioned the programming language to be used. I will provide pseudocode to achieve…
Q: We are given a 750 GB disk which has a data transfer rate of 40 Mbps (40 * 10^6 bps) and has 12000…
A: Introduction :Given , Disk space = 750 GBData Transfer Rate = 40 Mbps Rotational Speed : 12000 RPM…
Q: Computer Science Create a PowerShell script that handles the following information. The script must…
A: In this question we have to write a Power Shell script with the help of looping and array for the…
Q: Calculate the number of disk tracks traversed using the FCFS algorithms for the series of disk track…
A: Given: Calculate the number of disk tracks traversed using the FCFS algorithms for the series of…
Q: r)? Use the CLO
A: As per protocol, allowed to answer first three subparts and post the remaining in the next…
Q: Suppose the head of a moving head disk with 200 tracks numbered 0-199 is currently serving a request…
A: 1. FCFS (First Come First Served)
Q: Different algorithms are used for scheduling the disk head so that seek time may be reduced.…
A: Actually, algorithm is an step by step process.
Q: AES-192-CBC is used for encrypting a file of size 1800 byte, then find the total number of blocks…
A: Given that If AES-192-CBC is used for encrypting a file of size 1800 byte, then find the total…
Q: Plot the output in an Excel graph. Explain your findings. Adjust your inputs to get meaningful…
A:
Q: Q2) Consider a magnetic disk drive with 8 surfaces, 512 tracks per surface, and 64 sectors per…
A: A) Disk capacity = 8*512*64*1KB = 228 B = 256MB
Q: Question: CLO: ; Bloom Taxonomy Level: Suppose that the current position of Read/Write head is at…
A: 140,82,170,24,16,43,190,37,95,111 start head at 60 FCFS,SSTF,SCAN,C-SCAN,LOOK,C-LOOK
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: What is the correct sequence of time delays that happen during a data transfer from a disk to…
A: Question What is the correct sequence of time delays that happen during a data transfer from a disk…
A disk contains total 200 tracks and Request Queue contains tracks 80, 160, 41, 136, 22, 18, 192.
Apply FCFS and SCAN and find total track movements if head start position is at 50. Compare the results and Discuss which
Step by step
Solved in 2 steps with 2 images
- Assume that you have a disk that has 191 tracks (numbered 0- 190) and the header current position is at track 49. A request queue has the following track numbers: 98, 193, 38, 107, 9, 168, 85, 79 Compute the total seek time using FCFS, SSTF, SCAN, CSCAN, LOOK, CLOOK and compare their performance.what is the right choise? Assume a disk with 250 tracks and the head is initially at track 50. The requested tracks are the following: 37,22,19,11,55,65,100,150. Using SSTF which of the following is correct: 50à 55à 65à 37à 19à 11à 100à 150 50à 55à 65à 100à150à 37à 19à11 50à 55à 65à 100à150à 37à 11à19 50à 55à 65à 37à 11à 19à 100à 150Find out the total Head Movement of the Disk Head for the following request queue: 98, 183, 37, 122, 14, 124, 65, 67 Using the algorithms: a) FCFS b) SSTF c) SCAN d) C-SCAN e) C-LOOK The question did not state any initial head cylinder number.
- When a disk stack is serviced by a comb-like access mechanism, there is one read/write head for each disk surface?If AES-192-CBC is used for encrypting a file of size 1800 byte, then find the total number of blocks that are generated by the whole process?To test your knowledge, try storing an 8200-byte file on a disk with an 8-kbyte cluster and see how much wasted space you get.
- Consider a disk with an advertised average seek time of 6 ms, rotationspeed of 7,200 rpm, and 512-byte sectors with 500 sectors per track. Suppose that we wish to read a file consisting of 2500 sectors for a total of 1.28 Mbytes. Estimate the total time for the transfer when:Calculate the number of disk tracks traversed using the FCFS, SSTF, SCAN, and LOOK algorithms for the series of disk track service requests given below. At the time the first request arrives in the disk request queue, the read/write head is at track 50, moving toward the outer (lower-numbered) tracks. (Hint: Each track over which the disk arm passes counts in the total, whether or not the track is read.)54, 36, 21, 74, 46, 35, 26, 67The potential problems with the SSTF disc scheduling method are.
- Concurrent chunks of a file are attempted to be saved on successive drives. Is there a reason why doing so is so critical for magnetic disks? Is it still vital to utilize SSDs if they are available, or is it a waste of time? Why is this so?Consider a single-platter disk with the following parameters: rotation speed: 7200 rpm; number of tracks on one side of platter: 30,000; number of sectors per track: 600; seek time: one ms for every hundred tracks traversed. Let the disk receive a request to access a random sector on a random track and assume the disk head starts at track 0. a. What is the average seek time? b. What is the rotational latency? c. What is the transfer time for a sector? d. What is the total average time to satisfy a request?If connected files are fragmented, how do they get fixed by defragmentation?