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CS604 Assignment 3 Solution and Discussion

Re: CS604 Assignment 3 Solution and Discussion

Operating Systems(CS604)
Assignment # 03
Spring 2020
Total marks = 15

Deadline Date
27th July 2020

Please carefully read the following instructions before attempting assignment.

RULES FOR MARKING
It should be clear that your assignment would not get any credit if:
 The assignment is submitted after the due date.
 The submitted assignment does not open or file is corrupt.
 Strict action will be taken if submitted solution is copied from any other student or from the internet.

You should consult the recommended books to clarify your concepts as handouts are not sufficient.

You are supposed to submit your assignment in .doc or docx format.
Any other formats like scan images, PDF, zip, rar, ppt and bmp etc will not be accepted.

Objective:
• The objective of this assignment is to learn deadlock avoidance algorithm.
• The objective of this assignment is to learn page addressing.

NOTE

No assignment will be accepted after the due date via email in any case (whether it is the case of load shedding or internet malfunctioning etc.). Hence refrain from uploading assignment in the last hour of deadline. It is recommended to upload solution file at least two days before its closing date.

If you find any mistake or confusion in assignment (Question statement), please consult with your instructor before the deadline. After the deadline no queries will be entertained in this regard.

For any query, feel free to email at:
[email protected]

Question No 01 15 marks
Consider the below given table showing the system state at a certain time. There are five processes P0 to P4 and four types of resources A, B, C and D. The resource allocation, max and available matrices for each process are also given in the table as shown below.
Allocation Max Available A B C D A B C D A B C D P0 0 0 1 2 0 0 1 2 1 5 2 0 P1 1 0 0 0 1 7 5 0 P2 1 3 5 4 2 3 5 6 P3 0 6 3 2 0 6 5 2 P4 0 0 1 4 0 6 5 6
Considering the Banker’s algorithm for deadlock avoidance, answer the following questions.

(a) Compute and show the Need matrix for processes in the system.
(b) Is the system in safe state? If YES, then show the safe sequence. If NOT in safe state, then explain the reason.

Wish you very best of luck!

CS604 - Operating Systems
CS604 Assignment 2 Solution and Discussion Spring 2020

Re: CS604 Assignment 2 Solution and Discussion

Operating Systems (CS604)
Assignment # 02
Spring 2020
Total marks = 15

Deadline Date
14th June 2020

Please carefully read the following instructions before attempting assignment.

RULES FOR MARKING
It should be clear that your assignment would not get any credit if:
 The assignment is submitted after the due date.
 The submitted assignment does not open or file is corrupt.
 Strict action will be taken if submitted solution is copied from any other student or from the internet.

You should consult the recommended books to clarify your concepts as handouts are not sufficient.

You are supposed to submit your assignment in .doc or docx format.
Any other formats like scan images, PDF, zip, rar, ppt and bmp etc will not be accepted.

Objective:
• The objective of this assignment is to learn scheduling algorithm.
• To learn and understand different Operating System structure.

NOTE

No assignment will be accepted after the due date via email in any case (whether it is the case of load shedding or internet malfunctioning etc.). Hence refrain from uploading assignment in the last hour of deadline. It is recommended to upload solution file at least two days before its closing date.

If you find any mistake or confusion in assignment (Question statement), please consult with your instructor before the deadline. After the deadline no queries will be entertained in this regard.

For any query, feel free to email at:
[email protected]

Question No 01 15 marks
Consider the following set of processes, with the CPU burst time given in milliseconds:

Process Burst Time
P1 10
P2 1
P3 2
P4 1
P5 5

The processes are arrived in the order P1, P2, P3, P4, P5, all at time 0.

A. Draw Gantt chart showing the execution of these processes using FCFS and SJF scheduling.
B. Calculate the turnaround time of each process for FCFS scheduling algorithm as per part Calculation of part A?
C. Calculate the waiting time of each process for SJF scheduling algorithm as per calculation of Part A?

Wish you very Best of Luck!

CS604 - Operating Systems
CS604 GDB 1 solution and discussion Fall-2019

Re: CS604 GDB 1 solution and discussion

CS604 - Operating Systems
CS604 Assignment 3 Solution and Discussion

Operating Systems (CS604)
Assignment # 03
FALL 2019
Total marks = 20

Deadline Date
22nd Jan 2020

Please carefully read the following instructions before attempting assignment.

RULES FOR MARKING
It should be clear that your assignment would not get any credit if:
 The assignment is submitted after the due date.
 The submitted assignment file does not open or it is corrupt.
 The submitted assignment solution is copied from any other student or from the internet.

You should consult the recommended books to clarify your concepts as handouts are not sufficient.

You are supposed to submit your assignment in .doc or docx format.
Any other formats like scan images, PDF, zip, rar, ppt and bmp etc. will not be accepted.

Objective:
• The objective of this assignment is to provide understanding of:
Semaphore and Resource Allocation Graph

NOTE

No assignment will be accepted after the due date via email in any case (whether it is the case of load shedding or internet malfunctioning etc.). Hence refrain from uploading assignment in the last hour of deadline. It is recommended to upload solution file at least two days before its closing date.

If you find any mistake or confusion in assignment (Question statement), please consult with your instructor before the deadline. After the deadline no queries will be entertained in this regard.

For any query, feel free to email at:
[email protected]

Question No 01 8 Marks

Consider a banking transaction system where two processes Cash Withdrawal and Cash Deposit for a bank account could take place at the same time. The Cash Withdrawal process helps in withdrawing some cash amount using the ATM and the Cash Deposit process is used to deposit some amount into the account through a cheque. Which synchronization technique should be adopted in order to make sure that these processes can take place mutually exclusive? Write pseudo-code or algorithm for these two processes.

Note: No need to write code in any programing language.

Question No 02 12 Marks

Suppose a computer lab comprises of two printers, three scanners, and four ROM writers. There are three programs currently running on some computer. Assume program P1 is currently allocated a printer and two ROM writers and it is waiting for a scanner. Program P2 is allocated a scanner and it is waiting for a printer. Program P3 is allocated two ROM writers, a scanner, and a printer. Draw the corresponding resource allocation graph for these three programs. Also specify if the system is in a deadlocked state or not?

Wish you very Best of Luck!

CS604 - Operating Systems
CS604 Assignment 2 Solution and Discussion

Operating Systems (CS604)
Assignment # 02
FALL 2019
Total marks = 20

Deadline Date
02.12.2019

Please carefully read the following instructions before attempting assignment.

RULES FOR MARKING
It should be clear that your assignment would not get any credit if:
 The assignment is submitted after the due date.
 The submitted assignment file does not open or it is corrupt.
 The submitted assignment solution is copied from any other student or from the internet.

You should consult the recommended books to clarify your concepts as handouts are not sufficient.

You are supposed to submit your assignment in .doc or docx format.
Any other formats like scan images, PDF, zip, rar, ppt and bmp etc will not be accepted.

Objective:
• The objective of this assignment is to provide hands on experience of:
Different Process Scheduling Algorithms in Operating System

NOTE

No assignment will be accepted after the due date via email in any case (whether it is the case of load shedding or internet malfunctioning etc.). Hence refrain from uploading assignment in the last hour of deadline. It is recommended to upload solution file at least two days before its closing date.

If you find any mistake or confusion in assignment (Question statement), please consult with your instructor before the deadline. After the deadline no queries will be entertained in this regard.

For any query, feel free to email at:
[email protected]

Question No 01 4+3+3=10 marks
Assume you have to apply Shortest Job First (SJF) scheduling algorithms on the set of different processes given in the table below. The CPU burst time is also given for each process. Consider that all the processes arrive in the ready queue within time 0 seconds except P2 that arrive in ready queue within time 8 seconds. You are required to show the Gantt Chart to illustrate the execution sequence of these processes and calculate the Total Waiting Time and Average Waiting Time for the given processes by using SJF algorithm.
Process CPU Burst Time (seconds) P0 2 P1 6 P2 1 P3 4 P4 3 P5 8
Question No 02 4+3+3=10 marks
Consider a scenario where you have to apply Round Robin scheduling algorithm on the below given set of processes with each having a quantum size=8 milliseconds. The CPU burst time and arrival time for each process is also provided in the given table. You are required to show the Gantt Chart to illustrate the execution sequence of these processes. Moreover, calculate the Average Turnaround Time and Average Waiting Time for given processes by using round robin algorithm.
Process CPU Burst Time (Milliseconds) Arrival Time(Milliseconds) P0 15 0 P1 8 4 P2 25 18 P3 18 5
Wish you very Best of Luck!

CS604 - Operating Systems
CS604 Assignment 1 Solution and Discussion

Operating Systems (CS604)
Assignment # 01
Fall 2019
Total marks = 20

Deadline Date
16-11-2019

Please carefully read the following instructions before attempting assignment.

RULES FOR MARKING
It should be clear that your assignment would not get any credit if:
 The assignment is submitted after the due date.
 The submitted assignment does not open or file is corrupt.
 Strict action will be taken if submitted solution is copied from any other student or from the internet.

You should consult the recommended books to clarify your concepts as handouts are not sufficient.

You are supposed to submit your assignment in .doc or docx format.
Any other formats like scan images, PDF, zip, rar, ppt and bmp etc will not be accepted.

Objective:
• The objective of this assignment is to provide hands on experience of:
• To learn and understand the basic concept of an Operating System
• To learn Process and its states

NOTE

No assignment will be accepted after the due date via email in any case (whether it is the case of load shedding or internet malfunctioning etc.). Hence refrain from uploading assignment in the last hour of deadline. It is recommended to upload solution file at least two days before its closing date.

If you find any mistake or confusion in assignment (Question statement), please consult with your instructor before the deadline. After the deadline no queries will be entertained in this regard.

For any query, feel free to email at:
[email protected]

Question No 01 2*5=10 marks

As a process executes, it changes states. The state of a process is defined in part by the current activity of that process. Given below are current and next states of process. According to your understanding write process conditions based on the states in which process is currently in. what can be the condition that changes one state into another?

711993dd-d5ba-4dd9-b8e8-13ae4e0898e1-image.png

Question No 02 2*5=10 marks

The following table contains the list of operations. Write down the Linux commands along with their screenshots for performing these operations:
e6f1dbaf-ee88-4f30-8ad2-a08f1ca000e1-image.png
List of Operations
List the contents of files to the terminal window.
Change the owner and group owner of a file.
Compares two text files and show the differences between them
Print a string of text to the terminal window.
Change the password for a user.
You are required to run the respective commands on Ubuntu and provide relevant screen shots of the list of operations as stated in above table.
Wish you very Best of Luck!

CS604 - Operating Systems
CS604 Quiz#2 Solution and discussion

CS604 Quiz#2.
Please post your current Quiz to help the students.

CS604 - Operating Systems
CS604 GDB 1 solution and discussion

Graded Discussion Board

Semester: Spring 2019
Operating System – CS604

Instructions:

Please read the following instructions carefully before submitting the GDB:

A concise, coherent and to the point comment is preferred over lengthy comment having irrelevant details. Your comment must not be more than 4-5 lines.
Comments, posted on regular Lesson’s MDB or sent through email will NOT be considered in any case. Any request about such an acceptance will not be catered.
You should post your answer on the Graded Discussion Board (GDB), not on the Moderated Discussion Board (MDB).
For any query about the GDB, contact at [email protected]
Topic: “Characteristics Based Comparison Of Operating Systems”

Scenario

Suppose an enterprise intends to decentralize its infrastructure. In this process of decentralization, the enterprise has to use mobile-based services at the employee/user end. The budget allocated for this transformation is very limited, so the enterprise has to select an operating system that is flexible enough to accommodate its services and cheaper as well. Select an operating system for mobile devices that is suitable for the organization’s needs and give justification for your selection.

Best of Luck !

CS604 - Operating Systems
CS604 Assignment # 03  Solution and Discussion

66aa4c6d-8d94-4d53-89e7-ab7904f822a1-image.png

Operating Systems (CS604)
Assignment # 03 Spring 2019

Total marks = 20

Deadline Date   23rd July, 2019

Please carefully read the following instructions before attempting assignment.

RULES FOR MARKING
It should be clear that your assignment would not get any credit if:
♣ The assignment is submitted after the due date.
♣ The submitted assignment does not open or file is corrupt.
♣ Strict action will be taken if submitted solution is copied from any other student or from the internet.

You should consult the recommended books to clarify your concepts as handouts are not sufficient.

You are supposed to submit your assignment in .doc or docx format.
Any other formats like scan images, PDF, zip, rar, ppt and bmp etc will not be accepted.

Objective:
• The objective of this assignment is to provide hands on experience of:
• To learn and understand deadlock algorithms in Operating System

NOTE

No assignment will be accepted after the due date via email in any case (whether it is the case of load shedding or internet malfunctioning etc.). Hence refrain from uploading assignment in the last hour of deadline. It is recommended to upload solution file at least two days before its closing date.

If you find any mistake or confusion in assignment (Question statement), please consult with your instructor before the deadline. After the deadline no queries will be entertained in this regard.

For any query, feel free to email at:
[email protected]

Question No 1 15 Marks
Consider the below given snapshot of the system. P1 to P5 represent the 5 processes currently running on the system. M, N, O and P represent the resources whereas M, N, O and P have 13, 11, 9 and 16 instances respectively.
81858d3b-c30e-4b21-93b8-bb96c3476b68-image.png

Considering the given snapshot, answer the following questions using the banker’s algorithm:
(a) What will be the content of the matrix Available? 5 Marks
(b) What will be the content of the matrix Need? 5 Marks
© Is the system in a safe state Yes/No? If yes, then identify the safe sequence. 5 Marks

Question No 2 5 Marks
Consider the following resource allocation graph. Is there any deadlock in this graph or not? If yes, then mention the dead lock sequence.

5f0c00bb-3c13-45e5-8c8b-aa638a964522-image.png

CS604 - Operating Systems
Operating Systems (CS604) Assignment # 02  Spring 2019 Solution and Discussion

3ee3e99a-4656-4cc7-9374-92e3f17cd522-image.png

Operating Systems (CS604)
Assignment # 02 Spring 2019

Total marks = 20

Deadline Date 3rd June 2019

Please carefully read the following instructions before attempting assignment.

RULES FOR MARKING
It should be clear that your assignment would not get any credit if:
♣ The assignment is submitted after the due date.
♣ The submitted assignment file does not open or it is corrupt.
♣ The submitted assignment solution is copied from any other student or from the internet.

You should consult the recommended books to clarify your concepts as handouts are not sufficient.

You are supposed to submit your assignment in .doc or docx format.
Any other formats like scan images, PDF, zip, rar, ppt and bmp etc will not be accepted.

Objective:
• The objective of this assignment is to provide hands on experience of:
Different Process Scheduling Algorithms in Operating System

NOTE

No assignment will be accepted after the due date via email in any case (whether it is the case of load shedding or internet malfunctioning etc.). Hence refrain from uploading assignment in the last hour of deadline. It is recommended to upload solution file at least two days before its closing date.

If you find any mistake or confusion in assignment (Question statement), please consult with your instructor before the deadline. After the deadline no queries will be entertained in this regard.

For any query, feel free to email at:
[email protected]

Question No 01 10 marks
Assume you have to apply First Come First Serve (FCFS) scheduling algorithms on the set of different processes given in the table below. The CPU burst time is also given for each process. Consider that all the processes arrive in the ready queue within time 0 seconds. You are required to show the Gantt chart to illustrate the execution sequence of these processes and calculate the total waiting time and average waiting time for the given processes by using FCFS algorithm.

be925094-181f-4e06-8dca-f6059257d61c-image.png

Question No 02 10 marks
Consider a scenario where you have to apply Round Robin scheduling algorithm on the below given set of processes with each having a quantum size=10 milliseconds. The CPU burst time and arrival time for each process is also provided in the given table. You are required to show the Gantt chart to illustrate the execution sequence of these processes. Moreover, calculate the average turnaround time and average waiting time for given processes by using round robin algorithm.

f390b50c-f3c3-4441-a4dc-3c15e71b2c18-image.png

Wish you very Best of Luck!

CS604 - Operating Systems
CS604 Quiz#1 Solution and discussion

M

___________ scheduler takes the process from the ready queue and assign the CPU with the help of Dispatcher.
Long term
Short term
Medium
Swapper

While using the read/write system call which data type is use to return the size of file to buffer from file descriptor fd? CS604
Pipefd
SIZE_MAX
FIFO
Ssize_t

_____ system call is used to write to a file or FIFO or any other IPC channel. CS604
read
write
open
fork

In multi-threaded process thread () take two argument, they are used to take______________ and ___________. CS604

Program counter value, address space limit
New thread ID, process name
Register count, program counter
New thread function name, new thread ID

The basic purpose of ________________is to help the users to utilize the hardware resources for completing different tasks in a simplified manner. CS604

Operating system (Page 6)
Application software
All Software
All of the given

When sender never block because it has an infinite length storage area, then it means it is holding a queue of _____________ capacity. CS604

Zero
Unbounded
Defined
Bounded

How many modes are supported in operating system? CS604

1
2
3
4

In process management, some of the jobs can be suspended for some time in order to give other jobs a chance to be in execution. Which command can be used to place back a suspended program? CS604
fg
top
ps
bg

A Process ‘A’ that has finished working but its parent process has also finished its execution. In this state the process ‘A’ will be called as _____ process. CS604

Child
Thread
Zombie (Page No. 39)
Fork
In Unix/Linux ------------- are used for client server communication to pass data between a server process and client processes. CS604
FIFO (page 60)
LIFO
Read()
Write()

CS604 - Operating Systems
Operating Systems (CS604) Assignment # 01  Spring 2019

Spring 2019_CS604_1.docx

Operating Systems (CS604)
Assignment # 01 Spring 2019

Total marks = 20

Deadline Date  14th May 2019

Please carefully read the following instructions before attempting assignment.

RULES FOR MARKING
It should be clear that your assignment would not get any credit if:
♣ The assignment is submitted after the due date.
♣ The submitted assignment does not open or file is corrupt.
♣ Strict action will be taken if submitted solution is copied from any other student or from the internet.

You should consult the recommended books to clarify your concepts as handouts are not sufficient.

You are supposed to submit your assignment in .doc or docx format.
Any other formats like scan images, PDF, zip, rar, ppt and bmp etc will not be accepted.

Objective:
• The objective of this assignment is to provide hands on experience of:
• To learn and understand the basic concept of an Operating System
• To learn Directory Structure of Operating System

NOTE

No assignment will be accepted after the due date via email in any case (whether it is the case of load shedding or internet malfunctioning etc.). Hence refrain from uploading assignment in the last hour of deadline. It is recommended to upload solution file at least two days before its closing date.

If you find any mistake or confusion in assignment (Question statement), please consult with your instructor before the deadline. After the deadline no queries will be entertained in this regard.

For any query, feel free to email at:
[email protected]

Question No 01 10 marks

The following figure shows the directory structure in a UNIX/Linux system. Suppose, user Hassan has a subdirectory named courses under his home directory. This directory contains subdirectories for the courses that he has taken i.e. (CS401 and CS604).

If hassan is currently in the courses directory than write the UNIX/Linux commands to perform following operations.
How he can navigate back to his home directory? How he can navigate to his personal directory? How he can navigate to the directory for cs604 course? Right after the login, how he can display names of files and directories in his home directory? How he can create a new directory named programs under cs604 directory?
Question No 02 10 marks

The following table contains the list of operations based on important directories in the Linux operating system; you are required to mention the directory names used in Linux operating system against each desired output operation.

Sr #
List of Operations
Directory
1
To contain the devices available to Linux

2
Used for mounting temporary file systems

3
To store system configuration files

4
For the storage of large applications packages

5
To store shared libraries and kernel modules

Wish you very Best of Luck!

CS604 - Operating Systems

UNSOLVED CS604 Assignment # 03  Solution and Discussion

CS604 - Operating Systems

441

zaasmi Cyberian's Gold last edited by

Operating Systems (CS604)
Assignment # 03 Spring 2019

Total marks = 20

Deadline Date   23rd July, 2019

Please carefully read the following instructions before attempting assignment.

RULES FOR MARKING
It should be clear that your assignment would not get any credit if:
The assignment is submitted after the due date.
The submitted assignment does not open or file is corrupt.
Strict action will be taken if submitted solution is copied from any other student or from the internet.

You should consult the recommended books to clarify your concepts as handouts are not sufficient.

You are supposed to submit your assignment in .doc or docx format.
Any other formats like scan images, PDF, zip, rar, ppt and bmp etc will not be accepted.

Objective:
• The objective of this assignment is to provide hands on experience of:
• To learn and understand deadlock algorithms in Operating System

NOTE

No assignment will be accepted after the due date via email in any case (whether it is the case of load shedding or internet malfunctioning etc.). Hence refrain from uploading assignment in the last hour of deadline. It is recommended to upload solution file at least two days before its closing date.

If you find any mistake or confusion in assignment (Question statement), please consult with your instructor before the deadline. After the deadline no queries will be entertained in this regard.

For any query, feel free to email at:
[email protected]

Question No 1 15 Marks
Consider the below given snapshot of the system. P1 to P5 represent the 5 processes currently running on the system. M, N, O and P represent the resources whereas M, N, O and P have 13, 11, 9 and 16 instances respectively.

Considering the given snapshot, answer the following questions using the banker’s algorithm:
(a) What will be the content of the matrix Available? 5 Marks
(b) What will be the content of the matrix Need? 5 Marks
Is the system in a safe state Yes/No? If yes, then identify the safe sequence. 5 Marks

Question No 2 5 Marks
Consider the following resource allocation graph. Is there any deadlock in this graph or not? If yes, then mention the dead lock sequence.
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