Consider the following snapshot of a system: Allocation Max Available АВСD AВСD АВСD АВCD РО 0012 0012 P1 1000 1750 P2 1354 2356 1520 P3 0632 0652 P4 0014 0656 Answer the following questions using the banker's algorithm: a. What is the content of the matrix Need? b. Is the system in a safe state? c. If a request from process P1 arrives for (0,4,2,0), can the request be granted immediately. Justify your answer.

Consider the following snapshot of a system: Allocation Max Available АВСD AВСD АВСD АВCD РО 0012 0012 P1 1000 1750 P2 1354 2356 1520 P3 0632 0652 P4 0014 0656 Answer the following questions using the banker's algorithm: a. What is the content of the matrix Need? b. Is the system in a safe state? c. If a request from process P1 arrives for (0,4,2,0), can the request be granted immediately. Justify your answer.

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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Banker’s algorithm to see if the following is a safe sequence Processes Allocation Max Available R1 R2 R3 R1 R2 R3 R1 R2 R3 P1 0 1 0 7 4 4 4 1 2 P2 1 0 0 3 3 2 P3 4 0 3 7 0 3 P4 3 1 4 4 3 4 Answer the following questions Calculate and display the Need matrix Is the system in safe state? If yes, then show at least one safe sequence of the processes. If no, then show why it is in an unsafe situation. Additionally, show how the Available (working array) changes as each process terminates.
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Consider the following snapshot of a system: Answer the following questions using the banker’s algorithm: a. What is the content of the matrix Need?b. Is the system in a safe state?c. If a request from process P1 arrives for (0, 4, 2, 0), can the request be granted immediately?
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write a C++ program to Given a matrix of dimension m*n where each cell in the matrix can have values 0, 1 or 2 whichhas the following meaning:0: Empty cell1: Cells have fresh oranges2: Cells have rotten orangesSo we have to determine what is the minimum time required so that all the oranges becomerotten. A rotten orange at index [i,j] can rot other fresh orange at indexes [i-1,j], [i+1,j], [i,j-1],[i,j+1] (up, down, left and right). If it is impossible to rot every orange then simply return -1.Examples:Input: arr[][C] = { {2, 1, 0, 2, 1},{1, 0, 1, 2, 1},{1, 0, 0, 2, 1}};Output:All oranges can become rotten in 2 time frames.Input: arr[][C] = { {2, 1, 0, 2, 1},Tahir Iqbal Department of Computer Sciences. BULC{0, 0, 1, 2, 1},{1, 0, 0, 2, 1}};Output:All oranges cannot be rotten.Below is algorithm.1) Create an empty Q.2) Find all rotten oranges and enqueue them to Q. Also enqueuea delimiter to indicate beginning of next time frame.3) While Q is not empty do following3.a) While delimiter in…
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Answer the following questions using the banker’s algorithm: a. What is the content of the matrix Need? b. Is the system in a safe state? c. If a request from process P1 arrives for (0,4,2,0), can the request be granted immediately?
Given an unlimited supply of coins of given denominations represented by an array D[1, . . . , n], where D[i] is the denomination of the ith type of coin, find the minimum number of coins required to get a desired change. For example, assume that D = [1, 3, 5, 7]. If he desired change is 18, then the minimal number of coins required is 4, which can be made by 7 + 7 + 3 + 1 or 5 + 5 + 5 + 3. Precisely define the subproblem.Provide the recurrence equation.Describe the algorithm in pseudocode to compute the optimal value.Describe the algorithm in pseudocode to print out an optimal solution.
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A is be a 4×3 matrix and B is a 3×2 matrix. Which of the following gives a 2×4 matrix as a result? Select one alternative: a. BT AT b. BT A c. B A d. A + BT
Given the following transaction database from a supermarket: Transaction ID items T1 I1, I2, I3 T2 I2, I3, I4 T3 I4, I5 T4 I1, I2, I4 T5 I1, I2, I3, I5 T6 I1, I2, I3, I4 What is the output of the Apriori algorithm run on the above transaction database with a minimum support of 50 % (i.e. 3 out of 6 transactions)? Calculate the following confidence: {I1, I2} => { I3} {I2} => {I1, I3} {I1, I3} => {I2} Calculate the following lift: {I2} => {I3} {I2} => {I4} {I1, I3} => {I2}
Consider the following snapshot of a system: Allocation Max Available A B C D A B C D A B C DT0 3 1 4 1 6 4 7 3 2 2 2 4T1 2 1 0 2 4 2 3 2T2 2 4 1 3 2 5 3 3T3 4 1 1 0 6 3 3 2T4 2 2 2 1 5 6 7 5Answer the following questions using the banker’s algorithm:a. Illustrate that the system is in a safe state by demonstrating anorder in which the threads may complete.b. If a request from thread T4 arrives for (2, 2, 2, 4), can the request begranted immediately?c. If a request from thread T2 arrives for (0, 1, 1, 0), can the request begranted immediately?d. If a request from thread T3 arrives for (2, 2, 1, 2), can the request begranted immediately?