c) Refer to Table 1 and answer the following questions. Consider the Available = (3,3,2,1). i. ii. Po P₁ P₂ P3 A 2 2 3 0 Allocation B 0 1 1 3 C 1 0 1 2 Table 1 D 0 1 2 1 Maximum A B 5 0 2 3 5 3 2 5 لیا C 5 1 2 5 4 D 2 5 3 نیا By employing Resource Request Algorithm, identify whether a request from P3 that arrives for (1, 1, 0, 0) can be granted immediately or not? If yes, write the safe sequence. Show all your work. How many totals of instances for each of the resource A, B, C and D?

c) Refer to Table 1 and answer the following questions. Consider the Available = (3,3,2,1). i. ii. Po P₁ P₂ P3 A 2 2 3 0 Allocation B 0 1 1 3 C 1 0 1 2 Table 1 D 0 1 2 1 Maximum A B 5 0 2 3 5 3 2 5 لیا C 5 1 2 5 4 D 2 5 3 نیا By employing Resource Request Algorithm, identify whether a request from P3 that arrives for (1, 1, 0, 0) can be granted immediately or not? If yes, write the safe sequence. Show all your work. How many totals of instances for each of the resource A, B, C and D?

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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Part(a): What is a Deadlock? How it is detected? What are the necessary conditions for a deadlock to occur? Part(b): Suppose there are two resources available and the initial value of semaphore is set to 3.Consider a situation where P() and V() functions are called as follows. P(), P(), V(), V(), P(), P(), V(), P(), P(), V(), P(),P(),P(),V() Answer the following: 1. How many processes are sleeping on P ()?What is the value of semaphore? 2. How may processes have successfully completed their execution? 3. How many resources are available?
write algorithm: Input: Parameters for the GA.Output: Population of solutions, P. Each of these solutions can be used as a reporting cell configuration.
A dispatcher of RTOS has the following three resources, A, B, and C. A has 7 instances, B has 5 instances, and C has 6 instances. At this time, the allocation, request and available map is shown in table Q1 below. a. Is this system in a safe state? Execute necessary algorithm to show your result. b. Is there a valid sequence that can work for this map? If so show it and state if it is the only one or not. c. Given the allocation table below, if PO requests 1 more resource from A and it is granted, will the system be in a safe state? d. Given the allocation table below, if C has a total of 5 slots that will leave C with only 1 available instance, will the system be in a safe state? If not, suggest a solution to overcome deadlock. Table Ql Allocation Requested Available C PO 1. 2. P1 P2 1. 1. P3 1. 2. 4 A HO 12
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Consider the following snapshot of a system: Allocation Мах АВCD АВCD Po P1 P2 P3 P4 3014 5117 2210 3211 3121 3321 0510 4612 4212 6325 Using the banker's algorithm, determine whether or not each of the following states is unsafe. If the state is safe, illustrate the order in which the processes may complete. Otherwise, illustrate why the state is unsafe. а. Available 3D (0, 3, 0, 1) b. Available = (1, 0, 0, 2) If a request from process P3 arrives for (3, 0, 2, 0), can the request be granted immediately?
Consider the following snapshot of a system: Allocation Мах АВСD АВСD Ро 3014 5117 P1 P2 P3 2210 3211 3121 3321 0510 4612 P4 4212 6325 Using the banker's algorithm, determine whether or not each of the following states is unsafe. If the state is safe, illustrate the order in which the processes may complete. Otherwise, illustrate why the state is unsafe. a. Available = (0, 3, 0, 1) b. Available = (1,0, 0, 2) %3D
Consider a computer system which has four identical units of a resource R. There are three processes each with a maximum claim of two units of resource R. Processes can request these resources in any way that is, two in one shot or one by one. The system always satisfies a request for a resource if enough resources are available. If the processes don't request any other kind of resource, show that the system never deadlocks?
Since the list of attributes and FDs are given, we do the second step of the algorithm. In the step two of the algorithm for finding the minimized FDs, first we rewrite the FDs so that right hand side of each FD is exactly one attribute. Then we get rid of the redundant FDs. After doing these two sub steps mentioned above, determine which of the following FDs is redundant. None of these options DOM MOL O S, P, J® Q OLOM
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Given that you have submitted many requests to a server, each with its own id (or unique identification) and priority (or priority).Requests = [(id1, p1), (id2, p2), ……, (idn, pn)], where p1 > p2 > …. > pn. Provide the best algorithm or pseudocode for dealing with all of the requests.
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