The following diagram shows the process_state and other_resources fields of 4 processes in the PCB array. The RCB array shows the state and the waiting_list of 4 resources. The ready list RL contains processes 3 then 2. Consider (1), (2) as independent operations. РСВ 1 PCB 0 PCB 2 PCB 3 process_state blocked blocked ready running other_resources RCB 0 RCB 1 RCB 2 RCB 3 *** state allocated free allocated free waiting list Now consider that Process 3 requests resource 0. Now, answer the following questions: 5.1.1 What is the status of process 3? (a) blocked (b) ready (c) running Answer: 5.1.2 Resource O's waiting list contains: (a) process 0 (b) process 1 (c) process 2 (d) process 3 (e) empty Answer: 5.1.3 Resource 0 is: (a) allocated (b) free Answer:

The following diagram shows the process_state and other_resources fields of 4 processes in the PCB array. The RCB array shows the state and the waiting_list of 4 resources. The ready list RL contains processes 3 then 2. Consider (1), (2) as independent operations. РСВ 1 PCB 0 PCB 2 PCB 3 process_state blocked blocked ready running other_resources RCB 0 RCB 1 RCB 2 RCB 3 *** state allocated free allocated free waiting list Now consider that Process 3 requests resource 0. Now, answer the following questions: 5.1.1 What is the status of process 3? (a) blocked (b) ready (c) running Answer: 5.1.2 Resource O's waiting list contains: (a) process 0 (b) process 1 (c) process 2 (d) process 3 (e) empty Answer: 5.1.3 Resource 0 is: (a) allocated (b) free 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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Question

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The following diagram shows the process_state and other_resources fields of
4 processes in the PCB array. The RCB array shows the state and the waiting_list of 4
resources.
The ready list RL contains processes 3 then 2. Consider (1), (2) as independent operations.
РСВ 1
PCB 0
РСВ 2
PCB 3
process_state blocked
blocked
ready
running
...
other_resources
...
RCB 0
RCB 1
RCB 2
RCB 3
...
...
state
allocated
free
allocated
free
waiting list
1
Now consider that Process 3 requests resource 0.
Now, answer the following questions:
5.1.1 What is the status of process 3?
(a) blocked
(b) ready
(c) running
Answer:
5.1.2 Resource O's waiting list contains:
(a) process 0
(b) process 1
(c) process 2
(d) process 3
(e) empty
Answer:
5.1.3 Resource 0 is:
(a) allocated
(b) free
Answer:
5.1.4 RL contains the processes:
(a) process 0
(b) process 1
(c) process 2
(d) process 3
Answer:

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