Select the correct answer: The illustration with a request queue (0-199), by using the SCAN algorithm disk scheduling algorithn Calculate the total head movement in cylinders for 98, 153, 57, 122, 28 and the Head pointer is on 43. Oa. 169 Ob. none of them OC. 327 O d. 196 O e., 251
Q: The first-come, first-served disk scheduling algorithm moves the heads the minimum amount it can to…
A: Ans:- False
Q: Suppose a computer using direct mapped cache has 232232 words of main memory and a cache of 1024…
A: Here, I have to provide a solution to the above question.
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: Consider an ordered disk requests queue with involving
A: Total distance to satisfy pending request in C-SCAN = 367
Q: Find out the total Head Movement of the Disk Head for the following request queue: 98, 183, 37, 122,…
A:
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: We assume that the contiguous allocation method is used for the file system. The block size is 512…
A: Explanation: Since the block size of 512 bytesThe number of bits to address a word/byte offset…
Q: b) Consider a disk queue with requests for I/O to blocks on cylinders 108, 193, 51, 132, 24, 134,…
A:
Q: 11.3. Consider a disk drive with 4,000 cylinders, numbered from 0 to 3,999. The request queue has…
A: ANSWER:-
Q: Suppose a computer using fully associative cache has 2 20 words of main memory and a cache of 128…
A: Introduction: Cache memory, additionally called CPU memory, gives quicker information stockpiling…
Q: Q1) Consider a machine with a byte addressable main memory of 2 bytes and block size of 4 bytes.…
A: Solution: Q. How is a 12-bit memory address divided into tags? line number. and byte number? A.…
Q: Name four disk-arm scheduling algorithms. Outline the basic algorithm for each
A: Disk preparation: It is performed by operating systems to coordinate the arrival of I O requests…
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: Suppose the head of a moving-head disk with 200 tracks numbered 0 to 199 is currently serving a…
A: Disk Scheduling Algorithms are used to decrease any request's total seek time and schedule I/O…
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: À page fault means that we referenced a page A Outside the memory boundaries B With an incorrect I/O…
A: A page fault means that we referenced a page-
Q: 5) A hard disk (with sectors numbered 0 - 255) currently has its head positioned at sector 73. We…
A: Given that, The number of sectors are 256 from 0 to 255. Initial head position= 73 Queue of disk…
Q: Draw a line between a cache that is fully associative and one that is directly mapped out.
A: In a complete associative cache mapping, each block of main memory may be stored anywhere in the…
Q: Suppose a computer using direct-mapped cache has 232 bytes of byte-addressable main memory and a…
A: A cache is an equipment or programming segment that stores information so future solicitations for…
Q: Modiflow y the beprogram given to include response time program; FCFS CPU SCHEDULING ALGORITHM…
A: Program #include<stdio.h>#include<conio.h>#define max(a,b) ((a) > (b) ? (a) : (b))int…
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: Known disk queue as follows: 10, 45, 37, 56, 60, 25, 78, 48, 88, 70, 5, 20,30,17,31 with initial…
A:
Q: Different algorithms are used for scheduling the disk head so that seek time may be reduced.…
A: CPU Scheduling is a cycle of figuring out which cycle will possess CPU for execution while another…
Q: QUESTION 13 The first-fit algorithm assumes that the Memory Manager keeps only one list containing…
A: Answer Option B ==> False
Q: 5. Suppose that a disk drive has 40 cylinders, numbered 0 to 40. The drive is currently serving a…
A:
Q: mgsters hold the most active pagr entres and able take I80 s, what must the hit ratio be t ive ry If…
A: The hit ratio to be achieve an effective access time of 125ns is
Q: 4 2 012 0 4 1 2 6 7 3 5 Determine the four pages that are resident in main memory after each page…
A: Number of frames in main memory = 4K / 1K = 4 We will first understand FIFO. Initially, all the…
Q: Write a program on C++ to implement the three disk-arm scheduling algorithms (FCFS,SST, SCAN). Write…
A: As per guidelines I can answer only one. I hope you will understand. Thank You. But there is just…
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: b) Consider a disk queue with requests for IO to blocks on cylinders 108, 193, 51, 132, 24, 134, 75,…
A: A) First Come - First Serve(FCFS) All income results are placed at the end of the queue. Whatever…
Q: Suppose a computer using set associative cache has 216 words of main memory and a cache of 128…
A: Given: uppose a computer using set associative cache has 216 words of main memory and a cache of…
Q: Consider the following disk request sequence for a disk with 100 tracks 54, 25, 76, 85, 10, 50, 77,…
A: Here in this question we have given some disk request .head position is also given .which is 30…
Q: Think about the distinction that exists between a cache that is completely associative and one that…
A: The above question is solved in step 2 :-
Q: #include #include main() { int bt[20], wt[20], tat[20], i, n; float wtavg, tatavg; clrscr();…
A: for (i = 1; i < n; i++){ wt[i] = wt[i - 1] + bt[i - 1]; tat[i] = tat[i - 1] + bt[i];…
Q: Calculate the number of disk tracks traversed using the SSTF algorithms for the series of disk track…
A: Given: Calculate the number of disk tracks traversed using the SSTF algorithms for the series of…
Q: True or false: Temporal locality is the tendency for a program to access a memory address shortly…
A: Temporal Locality for program
Q: Consider a disk queue with requests for I/O to blocks on cylinders 47, 38, 121, 191, 87, 11, 92, 10.…
A: Introduction:Given, request for I/O to blocks on cylinders 47, 38, 121, 191, 87, 11, 92 and…
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 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: 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: Suppose a computer using direct mapped cache has 2^20 bytes of byte-addressable main memory and a…
A: How many blocks of main memory are there? => Block size 16 bytes = 2⁴ bytes…
Q: Suppose a computer using fully associative cache has 220220 words of main memory and a cache of 128…
A: solution:
Q: The read-read contention problem can not be resolved by inserting wait cycles Why? State two ways to…
A:
Q: 8. Consider one disk with 400 cylinders, numbered 0 to 399. Assume the current position of head is…
A:
Q: Find the total head movements for a request queue given below, using FCFS scheduling for a disk of…
A: The given I/O blocks for FCFS Scheduling 75, 25, 30, 68, 40, 89, 10 where head is initially at…
Q: The EDF scheduler uses ________ to order requests according to their deadlines. a. stack b. disks c.…
A: Given that 43. The EDF scheduler uses ________ to order requests according to their deadlines.…
Q: Write the binary translation of the logical address 0001010010111010 to physical address, under the…
A:
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- Find the PA of the memory location and its contents after the execution of thefollowing assuming that DS=1512h. MOV AL, 99h MOV [3518], AL1. In a certain device, the disk rotates at 5000rpm. a) how long does one revolution take? b) what is the average rotational delay of this disk drive 2. Consider a disk dirve with 1000 tracks, numbered 0 to 999. The request queue has the following composition: 300 740 150 940 200 850 145 555 775 695. The current position is 197 and the previous request was served at 100. For each of the following disk scheduling algorithsm, compute the total distance (in tracks) that the disk arm would move. Include the calculation steps in your answers. 2.1 First - In-First-Out (FIFO) 2.2 Shortest - Service-Time - First (SSTF) 2.3 SCAN (no LOOK variation) 2.4 C-SCAN (No C-LOOK variation)For a 100-cylinder disk, compute the total number of head movements for the request queue provided below, using FCFS scheduling and a 100-cylinder disk (0-99). It is expected that the read write head is present at cylinder number 50 at the start of the program. Request queue for disk cylinders has the following numbers: 75, 25, 30, 68, 40, 89, 10.
- Student information is stored in a data area, and each student entry is formatted as follows:The first nine bytes are the student ID in ASCII format.The following byte is the course score.The following phrase is the section identifier. There are over 300 such student records in memory, which have been loaded consecutively beginning at address $10000. To indicate the conclusion of the records, the last record loaded is a dummy record with a section identifier of $FFFF. Create an assembler subroutine GetMax that searches the complete list for the highest mark. If there is a tie, the student with the highest score on the list should be found. The beginning address of the subroutine should be returned.Microprocessor 8086 write An array called (A) has 300 unsigned byte numbers (chose your Owen data), write only one assemble to the following1-store the Maximum number of (A) in physical address AB200h. 2- store the Minimum number of (A) in the physical address CD100h. 3-rearrange the array given (A) ascending and save the new array in the memory starting at 3050e 4-save only the maximum odd number in the logical address 5200:0350The table below shows a segment of primary memory from a Von Neumann model computer Address Data 10101000 10001000 11001000 10011001 10100000 10101010 10110100 10111011 10001100 11001100 The program counter (PC) contains a value of 11001000. Find the value (in binary) that will be placed in MAR (memory address register)? MAR (in binray) %3D Find the value (in binary) that will be placed in MBR (memory buffer register)? MBR = (binray) %3D
- Consider the following disk request sequence for a disk with 100 tracks 54, 25, 76, 85, 10, 50, 77, 43, 61, 21. Head pointer starting at 30 and moving in left direction. 1) Find the number of head movements in cylinders using C-Scan scheduling. 2) Find the number of head movements in cylinders using C-Look scheduling.Question 3: On a byte addressable machine a string COMSATS UNIVERSITY ISLAMABAD PAKISTAN, starting from logical address 0 (zero) to 36 is to be loaded into memory, in noncontiguous fashion, using 'Paging' technique. The string is divided mechanically into equal sized pages of 4 bytes; similarly the memory is also divided into equal sized frames of 4 bytes. The ASCII code of each Character occupies one byte. The free frame list is given as follows: 8,3,4,2,6,7 ,5,1,9,21,24, 11 Answer the following questions a. What is the page map table? b. What are the linear logical addresses of characters 'U' and_'B'? c. What are the linear physical addresses of characters 'U' and_'B'? d. What is the difference between Internal and External fragmentation? e. What is the internal fragmentation in loading given string?b) Given the following references string and page frames References string = 701243932107312 Page frames=5 i) Draw memory allocation using FIFO and Belady's Optimal algorithm.
- Q4: Disk controllers map logical blocks to physical locations on the disk. Suppose that a 10MB file consisting of 1024-byte logical blocks is stored on a disk drive with the following characteristics: Rotational rate: Average seek time: Average sectors/track: Surfaces: Sector size: 12,000 RPM 8ms 1024 8 1024 bytes Suppose that a program reads all the blocks of this file sequentially, and that the time to position the head over the first block is the average seek time plus the average rotational latency. 4a) What is the best case for mapping logical blocks to disk sectors? Estimate the time required to read the file in this best-case scenario. 4b) Suppose that the logical blocks are mapped randomly to disk sectors. Estimate the time required to read the file in this scenarioGiven the following bit vector named Tablet: Tablet = 1 1 1 0 1 0 1 0111100110001 i) Draw the secondary disk storage to represent the unallocated file. ii) Consider File S6 Lite with the size of 4 blocks and File iPad with the size of 5 blocks are to be allocated into the secondary storage. Draw the secondary disk storage for both files using index allocation.1. Create a Python programme that uses the multiprocessing method and the Pool object to spawn 10 processes with inputs 1,...,10, and each process calculates and returns the sum of integers up to and including its input.2. Write a Python programme that multiplies matrices to n n using columnwise 1D partitioning. 1. Create a Python programme that uses the multiprocessing method and the Pool object to spawn 10 processes with inputs 1,...,10, and each process calculates and returns the sum of integers up to and including its input.2. Write a Python programme that multiplies matrices to n n using columnwise 1D partitioning.