ParagraphStyles2.13.6.91011121314. I15 I 16A computer has four page frames. The timeof loading, time of last access and the R andM bits for each page are as shown below (thetimes are in clock ticks).PageLoadedLast refM1262791230260112027211602801(i)Which page will FIFO replace?(ii) Which page will LRU replace?

Answered: A computer has four page frames. The…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Consider the following page reference string for a 12-page executable. 0,1,1,3,4,10,5,2,2,10,6,6,10,11,7,8,7,9,9,6,5,11,9,11How many page faults would occur for the following replacement algorithms, assuming one, two, and four frames?Remember that all frames are initially empty, so your first unique pages will cost one fault each.a. LRU replacementb. FIFO replacementc. Optimal replacement
This is what my professor said: Items are 4 bytes, pages are 2k, so ~512 items fit on a page. Even if we start in the beginning of a page, the first access will be a miss followed by ~200 hits, then a TLB miss followed by ~500 hits, so the hit rate is ~100%5. Page size 512 means 9 bits of offset and 7 bits of VPN. The offset is just the decimal version of 1 0111 0111 [unsigned] which is 375The offset is 0011 100 which is 28. Is he correct?
Consider the following page reference string 1, 2, 3, 4, 2, 1, 5, 6, 2, 1, 2, 3, 7, 6, 3, 2, 1, 2, 3, 6 How many page faults would occur for the following replacement algorithms, assuming one, two, three, or even four frames? Remember that all frames are initially empty, so your first unique pages will all cost one fault each.
Preferably use dotnet (any version) or Java, Selenium with local chrome driver, write a scenario that: a. navigates to The Internet (the-internet.herokuapp.com) b. adds n number of elements c. asserts that n number of elements exist on the pageAlso if you can run it with GitHub actions and output a report.
Consider the following page address stream: 2 1 4 3 5 3 2 4 5 2 1 2 4 3 1 Which of the following causes the most page faults to occur on a machine with 3 frames? Scheme that causes the most faults: a) First in First out b) LRU and FIFO are the same number of faults c) FIFO and Opitimal are the same number of faults d) All have the same number of faults e) Least Recently Used f) No faults occurs g) LRU and Optimal are the same number of faults h) Optimal NUMBER OF FAULTS CAUSED: a)
a) A computer memory with a total of three physical pages with below pagereference sequence: 1, 2, 3, 2, 1, 4, 3, 5, 6, 4, 3, 5, 3, 5, 6, 7, 2, 1, 5, 7.How many page faults occur using the following algorithms? a) FIFOb) LRUc) OptimalAlso state which one is better algorithm?
Consider the following page reference string: 1, 2, 3, 4, 2, 1, 5, 6, 2, 1, 2, 3, 7, 6, 3, 2, 1, 2, 3, 6. How many page faults would occur for the following replacement algorithms, assuming one, two, three, four, five, six, and seven frames? Remember that all frames are initially empty, so your first unique pages will cost one fault each. · LRU replacement· FIFO replacement· Optimal replacement
This is the link to the book: (the pages to the figs 10.4 -10.9 are 1159 - 1176) https://ipfs.io/ipfs/bafykbzaceazxlwbrjmdk7ytxkp72zt4htqvcwotwpmiulqvniyzonm7w76uwq?filename=Paul%20Deitel%2C%20Harvey%20Deitel%20-%20Java_%20How%20to%20Program%20Early%20Objects-Pearson%20%282017%29.pdf
1. The purpose of creating various page replacement algorithms is to: a.) to allocate pages to frames. b. )increase the page fault rate. c.) decrease the page fault rate. d.) replace pages faster. 2. Optimal page replacement algorithm is difficult to implement, because it: a.) requires a lot of information. b.) is extremely expensive. c.) requires future knowledge of reference string. d.) is too complex. 3. LRU page replacement algorithm associates with each page the: a.) page that has the least count. b.) time of that page 's last use c.) time it was brought into memory. d.) page that will not be used.
A process refers to 5 pages, A, B, C, D, E in the order : A, B, C, D, A, B, E, A, B, C, D, E. If the page replacement algorithm is FIFO, the number of page transfers with an empty internal store of 3 frames is : Select one: a.9 b.10 c.8 d.7
In this part, we add the CPU temperature ID of the Raspberry Pi to the MQTT stream. Open a new terminal and create a new script by the name of py and add the following content to it. import paho.mqtt.client as mqtt import time from subprocess import check_output from re import findall def get_temp(): temp = check_output(["vcgencmd","measure_temp"]).decode("UTF-8") return(findall("\d+\.\d+",temp)[0]) def on_connect(client, userdata, flags, rc): print("Connected with result code "+str(rc)) client.subscribe("etec224_mqtt_test/") global Connected Connected = True Connected = False client = mqtt.Client() client.on_connect = on_connect client.connect("broker.emqx.io", 1883, 60) client.loop_start() while Connected!= True: #Wait Here time.sleep(0.1) try: while True: value = get_temp() client.publish('etec224_mqtt_test/', value) time.sleep(1) except KeyboardInterrupt: client.disconnect()…
2.1 Bob and Alice are classmates who are studying at university of Limpopo doing their final year studies in Computer Science.Due to the ongoing pandemic of covid 19, lectures are virtual.However they have choosen not to attend virtual class but download class recordings.Discuss the process of getting the videos to play on their media player after downloding. In your explanation include all the protocols involved.

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A computer has four page frames. The time of loading, time of last access and the R and M bits for each page are as shown below (the times are in clock ticks). Page Loaded Last ref M 126 279 230 260 1 120 272 1 1 160 280 Which page will FIFO replace? (ii) Which page will LRU replace? (i) O12 3