For each Part of Question 1, the system under consideration is the same. Question 1 Part 1 C. The system has two device queues, Q, and Qa. Process B is in the running state, what are the possible states for processes A and C: Consider a system with three user processes, A, B, and Click or tap here to enter text. Question 1 Part 2 the state transition of process B and any changes to the device queues. Process B makes an I/O request for device Q,, describe Click or tap here to enter text. Question 1 Part 3 moved to the device queue for Q.. What must have occurred for this to be the case? What are the state transitions of processes A, B, and C. And which process is currently running? Before process B's I/O request has completed A is Click or tap here to enter text.

For each Part of Question 1, the system under consideration is the same. Question 1 Part 1 C. The system has two device queues, Q, and Qa. Process B is in the running state, what are the possible states for processes A and C: Consider a system with three user processes, A, B, and Click or tap here to enter text. Question 1 Part 2 the state transition of process B and any changes to the device queues. Process B makes an I/O request for device Q,, describe Click or tap here to enter text. Question 1 Part 3 moved to the device queue for Q.. What must have occurred for this to be the case? What are the state transitions of processes A, B, and C. And which process is currently running? Before process B's I/O request has completed A is Click or tap here to enter text.

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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There are 3 resources R1, R2 and R3 with one instance each and three processes P1, P2 and P3 in an operating system. A snapshot of the system resource allocation graph shows the following: R1 is allocated to P2; R2 is allocated to P1; R3 is allocated to P3; P1 requests R1; P2 requests R3; P3 requests R2. Which of the following is true about this system? answer ) a)Undetermined b)There is deadlock in the system c)Deadlock will never happen d)There is no deadlock in the system
Problem: A single process, with execution time of BT time units, is detected by the system that uses Round Robin algorithm with time quantum of QT time units. Every time the time quantum elapses; a context switch is always performed with CS time units. Assume that the process come at time equal to zero (0). 1) If BT is 25, QT is 10 and CS is 2, what is the CPU utilization of the system? a. Below 70% b. 70-79% c. 90- 100% d. 80-89% 2) If BT is 20, QT is 6 and CS is 1, what is the CPU utilization of the system? a. 95- 100% b. 90- 94% c. Below 85% d. 85-89% 3) What is the CPU utilization if BT is equal QT and QT is equal to CS? a. 100% b. 50% c. 75% d. 60% 4) What is the system’s throughput if BT is less than QT? a. 3/BT b. Undetermined c. 1/BT d. 2/BT 5) What is the system’s turnaround time (TAT) if BT is less than QT? a. BT/QT b. BT c. CS d. QT
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We are dealing with 6 processes p1;p2; : : : ;p6:(a) Processes p1;p2 in p3 arrive at time 2 ms, respectively. Each of those processesneeds 5 ms of CPU time.(b) Process p4 arrives at time 10 ms and needs 3 ms of CPU time.(c) Processes p5 in p6 arrive at time 19 ms. Process p5 needs 7 ms, while process p6needs 4 ms of CPU time.Scheduling is preemptive, where there process switch takes 1 ms. For the Round-Robinalgorithms with quantum 2 ms illustrate the execution of those processes on a timeline.Then determine the average turnaround time.
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A single process, with execution time of BT time units, is detected by the system that uses Round Robin algorithm with time quantum of QT time units. Every time the time quantum elapses; a context switch is always performed with CS time units. Assume that the process come at time equal to zero (0). 1) What is the system’s throughput if BT is less than QT? a. 3/BT b. Undetermined c. 1/BT d. 2/BT 2) What is the system’s turnaround time (TAT) if BT is less than QT? a. BT/QT b. BT c. CS d. QT