Consider the following page reference string 1 23 4 123 4123412123 1. Which of the following statements are correct? I. The number of page faults using FIFO and LRU will be same using 3 empty frames. The number of page faults using optimal page replacement algorithm and LRU will be same using 3 empty frames. The number of page faults using optimal page replacement algorithm will be same using 3 empty frames and 2 empty frames. The number of page faults using FIFO, LRU and optimal page replacement algorithm will be same using 4 empty frames. П. III. IV. (A)I and II (B)I and IV (С)I, I and IV (D)I, II and III

Consider the following page reference string 1 23 4 123 4123412123 1. Which of the following statements are correct? I. The number of page faults using FIFO and LRU will be same using 3 empty frames. The number of page faults using optimal page replacement algorithm and LRU will be same using 3 empty frames. The number of page faults using optimal page replacement algorithm will be same using 3 empty frames and 2 empty frames. The number of page faults using FIFO, LRU and optimal page replacement algorithm will be same using 4 empty frames. П. III. IV. (A)I and II (B)I and IV (С)I, I and IV (D)I, II and III

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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B. The following triangle strip Sı={0, 1, 2, 3, 7, 1, 5, 4, 7, 6, 2, 4, 0, 1} is decoded as a set of 12 triangles: {012, 123, 237, 371, 715, 154, 547, 476, 762, 624, 240, 401}, which are supposed to represent a cube as shown in the figure below, but there is a problem. 1. What is the problem? 2. Fix the problem by replacing the set of 12 triangles above with a different set that make the surface correctly oriented. AV 6. 2, 3 5
Write 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.
Starting from 2021, the square roots of 100 integers are calculated.The 2 digits after the comma of the results found are kept and the remaining decimal part is discarded. ( For exampleThe number 3.316624 is taken as 3.31.) The obtained results are summed and the number A is found.Starting from 2021, the square roots of 100 integers are calculated.The 3 digits after the comma of the results found are kept and the remaining decimal part is discarded. ( For exampleThe number 3,316624 is taken as 3,316.) The obtained results are added and the number B is found.What is the difference in thousandths between B and A?
A town wishes to build a trail between city A, city B, city C, city D, and city E. The distances, in miles, between any two of the destinations are given in the table. Use the table to answer parts (a) and (b) below. A B C D E A * 154 134 216 129 B 154 * 195 51 243 C 134 195 * 225 220 D 216 51 225 * 308 E 129 243 220 308 * a) Use Kruskal's algorithm to determine the minimum-cost spanning tree that would link each location to create the least expensive trail. Choose the correct graph below. A. ABCD154216225E129 B. ABCD15419551E129 C. ABCD15413451E129 D. ABCD154134216E129 b) If the cost of building such a trail is $3700 per mile, what is the cost of building the trail determined in part (a)? The cost is:
For large values of n which statement is true? a. 2n^3 behaves like n^3 b. 2n^3 + 4n^2 + 17n behaves like n^3 c. 2n^3 + 4n^2 behaves like n^3 d. All the listed choices are true
Given a binary string S of size N. You had been given the task to convert the given string into Fair string. You can do the following operation any number of times : . If the ith character in S is 0, replace it with 1 using cost C[i]. . If the ith character in S is 1, replace it with 0 using cost Cli). You have to determine the minimum cost used to convert the given string into Fair string. A string S is a Fair string if it is either of type XYXYXYXYXY.... or, XXҮҮХXҮҮХXҮ... Binary strings are string that only contains 'O' and '1'. 9:04 pm
Proc network allow us to define the convergence tolerance for the PageRank algorithm. This value must be a positive number. The default is 1E-9. The PageRank algorithm stops iterating when the difference between the PageRank score of the current iteration and the previous iteration is less than or equal to the tolerance defined. To define the convergence tolerance, we can use the option PAGERANKTOLERANCE=. Write The code to shows how to compute the PageRank centrality using proc network based on a directed graph using unweighted links.
Problem You are given a table with n rows and m columns. Each cell is colored with white or black. Considering the shapes created by black cells, what is the maximum border of these shapes? A shape is a set of connected cells. Two cells are connected if they share an edge. Note that no shape has a hole in it. Input format • The first line contains t denoting the number of test cases. • The first line of each test case contains integers n, m denoting the number of rows and columns of the matrix. Here, # represents a black cell and '.' represents a white cell. • Each of the next n lines contains m integers.
Suppose we are using the page replacement algorithm Least Recently Used, to replace pages of memory. We'll pretend we only have 3 frames of memory, and represent them as a horizontal list. For example: [4, 5, 6] would mean pages 4, 5, and 6 correspond to the first, second, and third frames. Suppose then, we have the following sequence of page hits: 85216777741221 We can assume the first three hits fills our frames with the following pattern: [8, 5, 2] By the time we get to the end of the sequence, what is the usage of our frames? The first frame contains: 4 The second frame contains: 1 The third frame contains: 2
Decrypt a message that was encrypted using the following logic: • First the words in the sentence are reversed. For example, "welcome to hackerrank" becomes "hackerrank to welcome" • For each word, adjacent repeated letters are compressed in the format <character><frequency>. For example, "mississippi" becomes "mis2is2ip2i" or "baaa" becomes "ba3". Note the format is not applied for characters with frequency 1. Also, the frequency will be no greater than 9 Return the decrypted string Exampl e..2.ample
Problem Alice was given a number line containing every positive integer, x, where 1<=x<=n. She was also given m line segments, each having a left endpoint, l (1<=l<=n), a right endpoint, r (1<=r<=n), and an integer weight, w. Her task is to cover all numbers on the given number line using a subset of the line segments, such that the maximum weight among all the line segments in the chosen subset is minimal. In other words, let S=(l1,r1,w1),(l2,r2,w2),....,(lk,rk,wk), represent a set of k line segments chosen by Alice, max(w1,w2,...,wk) should be minimized. All numbers 1,2,....n should be covered by at least one of k the chosen line segments. It is okay for the chosen line segments to overlap. You program should output the minimized maximum weight in the chosen subset that covers all the numbers on the number line, or -1 if it is not possible to cover the number line. Input format The first line of the input contains an integer, n - denoting the range of numbers…
Answer it is c++ only Chef recorded a video explaining his favorite recipe. However, the size of the video is too large to upload on the internet. He wants to compress the video so that it has the minimum size possible. Chef's video has N frames initially. The value of the th frame is A₁. Chef can do the following type of operation any number of times: • Choose an index i (1 ≤ i ≤ N) such that the value of the ith frame is equal to the value of either of its neighbors and remove the ith frame. Find the minimum number of frames Chef can achieve. Input 1 1 5 output 1