Using the following page replacement algorithms, determine the number of faults in the following reference string given a physical memory size of 4 frames: 5 6 5 4 4 4 8 2 9 9 0 4 5 3 9 6 8 1 9 1 6 1 0 0 5 OPT. 3
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Using the following page replacement
5 6 5 4 4 4 8 2 9 9 0 4 5 3 9 6 8 1 9 1 6 1 0 0 5
- OPT. 3 frames
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- This table shows a page reference string 1, 2, 3, 1, 4, 5, 3, 6, 7, 2, 2, 1, 7, 6, 5, 7, 4, 7, 1 and the corresponding frame allocations. Use this for questions 10,11,12,13. There are 4 frames of memory. Please copy and complete the allocations. For each frame which maintains the same page as in the previous step please enter"=" The first 5 columns have been filled in. 1|2|31|4|5|36|7 221765 7 4 7 1 1. 1 2. 2 3 4 Show the table if the page replacement algorithm is FIFO - First In First Out. Show the table if the page replacement algorithm is optimal.Consider the following reference string CAN YOU DO LRU PLEASE 3 2 4 2 1 6 4 7 8 2 4 3 1 6 8 4 2 3 1 5 Use the algorithms below with the indicated number of frames to calculate the number of faults for each algorithm and number of frames considered. Please note that all the frames are initially empty which will cause a page fault as demonstrated in the class Algorithm Number of frames considered 3 4 5 7 FIFO 18 18 15 7 LRU 19 16 16 8 OPTIMAL REPLACEMENT 14 12 10 8Write a program that implements the FIFO and LRU page-replacement algorithms presented in this chapter. First, generate a random page reference string to each algorithm, and record the number of page faults incurred by each algorithm. Implement the replacement algorithms so that the number of page frames can vary from 1 to 7. Assume that demand paging is used.
- you need to design, analyze, and implement algorithms to read in a sequence of characters from standard input and maintain the characters in a linked list with no duplicates. When you read in a previously unseen character, insert it at the front of the list. When you read in a duplicate character, delete it from the list and reinsert it at the beginning. The program implements the well-known move-to-front strategy which is useful for caching, data compression, and many other applications where items that have been recently accessed are more likely to be re-accessed. Requirements: The program should read a sequence of characters. The program should insert unseen character at the front of the list. The program should check if the character is not in the list to be inserted at the front of the list. The program should delete a duplicate character and delete it from the list and insert it at the beginning of the list. The program should check if the character is already in the list and…Vectors store a linear arrangement of values, accessed by a single index. Two-dimensional arrays store a tabular arrangement of values, accessed by two indexes, for example matrix[i][j], where i is the row index, and j is the column index. A common two-dimensional array that you should have seen early on in your education is a multiplication table. For example, here is the multiplication table up to 5 x 5: 1 2 3 4 5 1 1 2 3 4 5 2 2 4 6 8 10 3 3 6 9 12 15 4 4 8 12 16 20 5 5 10 15 20 25 Write a program that asks the user for the number of rows and columns for a multiplication table and prints out the corresponding results.Student information is being held in a data area, where each student record has the following format: The first nine bytes are the student number, held in ASCII The next byte is the course mark The next word is the section identifier There are well over three hundred such student records that have been loaded sequentially into memory starting at address $10000. The last record loaded is a dummy record with a section identifier of $FFFF, to show the end of the records. If a2 has the address of a student record, what is the location of the next record in the array / data area:
- Student information is being held in a data area, where each student record has the following format: The first nine bytes are the student number, held in ASCII The next byte is the course mark The next word is the section identifier There are well over three hundred such student records that have been loaded sequentially into memory starting at address $10000. The last record loaded is a dummy record with a section identifier of $FFFF, to show the end of the records. If a2 has the address of a student record, if using indexed addressing mode, what is the index value X such that X(a2) addresses the course mark?Implement the page replacement algorithm a) LIFO B) FIFO Reference string = 9 1 0 4 0 2 0 8 2 3 1 3 1 2 9 4 7 8 9 12 Calculate page fault ratio. Calculate page hit ratio Please show all step how to do provide correct solution.Given an array containing 286 telephone area codes assigned to the United States of America as shown below, and with the aid of illustration, show how the binary search can be used to locate the following area codes: 1. 740 2. 364 3. 564 201 202 203 205 206 207 208 209 210 212 213 214 215 216 217 218 219 224 225 228 229 231 30 21 4 10 11 12 13 14 15 16 17 18 19 234 239 240 248 251 252 253 254 256 260 262 267 269 270 276 281 283 301 302 303 304 305 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 307 308 309 310 312 313 314 315 316 317 318 319 320 321 323 325 330 331 334 336 337 339 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 347 351 352 360 361 364 385 386 401 402 404 405 406 407 408 409 410 412 413 414 415 416 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 417 419 423 424 425 430 432 434 435 440 443 445 469 470 475 478 479 480 484 501 502 503 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 504 505…
- A common implementation of sequential files on disk has each block point to its successor, which may be any block on the disk. This method requires a constant amount of time to write a block (as the file is originally written), to read the first block in the file, and to read the ith block, once you have read the 1 - 1” block. Reading the lth block therefore requires time proportional to 1. Show how by adding just one additional pointer per node, you can keep all the other properties, but allow the lth block to be read in time proportional to log I. [Hint: heaps have implicit pointers from node I to what other nodes?] Explain what the algorithm for reading the th block has in common with an algorithm for raising a number to the ith power in time proportional to log 1.Write a program in MIPS Write a program that first initialize a 4 by 4 table with random integer values. Then read the diagonal elements and print each of the diagonal cells. Finally display the sum of all diagonal cells.Two friends are exchanging messages through regular post mail. They don't want anyone to understand their messages in case anyone read them. The messages are in the form of an array of characters, where each character has a numeric value as illustrated in the below lookup table. GHIJ K LM 6 7 8 A BC DE F 1 2 3 4 9 10 11 12 13 QRS 14 15 16 17 18 19 20 N O P T U v V w X Y 21 22 23 24 25 26 They decided to change the characters in the array in a way that cannot be observed by any accidental reading. They do so as follows: 1- Given the original message, for example: GREETINGS 2- transform the original character to its numeric value 7 18 5 5 20 9 14 7 19 3- For each number, subtracting from its value the value of the first lower value character after it, and if there's no such character they will keep that character without any change. 2 12 5 5 11 2 77 19