Operating System Questions and Answers May 10, 2021

Design a robust patch management plan for a new startup that will primarily use Windows workstations and Linux servers in its day to day operations. Submit a presentation that outlines the patch management process and identifies who will own and carry out patch management procedures and tasks.

Compare in detail the Process Management utilities in the Linux OS with that of your phone or tablet's OS. (i) Which one is easier to use and why? (ii) Describe the information provided by each, and which system provides more useful information. (iii) Discuss what you would do differently if you were to create your own Process Management utility?

write the following system call in window and linux only system call names example create process in windows let ke fork() in linux

1. Process control end, abort load, execute 2. File management create process, terminate process get process attributes, set process attributes wait for time create file, delete file open, close read, write, reposition wait event, signal event allocate and free memory 3. Device management get file attributes, set file attributes request

Calculate the wait time W(P) and turnaround time TTRnd (Pi) for all processes under the given process management policies assuming your computer has four processors. Draw the Gantt chart for each processor. Shortest Job Next (SNJ) (50 points) Average Processor 1 Processor 2 Processor 3 Processor 4 1 2 3 4 5 6 7 8 9 10 Arrival Time 0 10 50 70 80

Identify the significant role of Threads in the Operating System. Compare and contrast the types of threads used in Windows and Linux operaring System with one example for each. Consider that you are working as a technician in a reputed company. Based on your knowledge and experiences, discuss any two(2) types of file systems in the Linux

Describe the 4 threading models used to map user threads to kernel threads. What type of thread mapping model is used in Linux Ubuntu? If it does not support threading, research and discuss why it is not supported.

While talking about process vs threads a parent process has child processes and an application or process can have small threads. So what will happen if a child process of a parent process get blocked for some reason and in same case what will happen if a thread of a process get blocked for some reason. Give the answer by giving a valid example

Using process management Linux commands, take one of the running processes as an example and clearly explain at least 3 outputs fields relevant to that process, for example PID, start time, etc.

operating system using VMware code in c language

Write a program which creates thread and passes argument to thread as CS203 in main program. The thread should be executed first with a message Welcome to the Lab Sessions of along with the argument and Later It should execute the main program with a message End of the Lab Sessions for along with the argument. In the output, the thread should be

Write a multi threaded Linux program that counts up all the numbers found in three separate files all at the same time. The program will require 4 threads: The main thread - Creates three child threads and assigns the names of the files to each child thread. Once each child thread is finished, it will print the total of all three files to the

For the processes scheduling table shown below, draw time diagram for the FirstComeFirst Served (FCFS) and the RoundRobin (RR, q1) scheduling algorithms. Process Arrival Time A B C D E 0 2 4 6 8 Service Time 3 4 2 6 5 Write a Linux OS C code where the main process creates a thread that will print the character x n times. n is an integer that is

Compare virtual machines to user-level thread packages. Specifically, compare how processes and threads are managed Continuing part (1), compare how memory management is handled. Continuing part (1), compare system calls.

Evaluate the following criteria for Android : 1. Hardware supported 2. Process and Thread Management 3. Memory management, Segmentation, Pagination 4. File I/O & File Encryption, Disk Scheduling 5. Scalability.

1- Explain how multithreading is implemented in Java. How are threads created in Java? How threads may be used to run multi-tasks? 2- Write a simple Java application to create three independent threads: thread 1 to compute the sum of 10 input numbers, thread2 to compute the standard deviation of another 15 numbers, thread 3 to compute the hashes

Case study of the operating system considering windows 10. 1. Introduction 2. Design goals/principles 3. Operating-system structure 4. Components of the Operating system 5. Shells of the operating system 6. Programmer Interface 7. Process creation, termination, and communication 8. Process state diagram and process management system-calls 9.

1-How 3 state process Model different from 5 state model. Draw Linux process state model 2-Explain the criteria to be considered in case of CPU scheduling , Differentiate between FIFO, SJF and RR Scheduling

Conduct a comparative study between the following operating systems 1) UNIX 2) Linux 3) Microsoft Windows The comparisons are in separate tables for each aspect. Aspect to be covered is a) Process control b) Threading c) Concurrency Mutual Exclusion and Synchronization Deadlock and Starvation d) MemoryVirtual

Code written in C, use gcc -pthread to compile if you are in Linux /* Processes vs. threads storage example */ #include #include #include #include /*This data is shared by the thread(s) */ int this_is_global; /*This is the thread function */ void thread_func(void *ptr); int main() { int local_main; int pid, status; pthread_t thread1, thread2;

In terms of memory cache utilization, what is an advantage of assigning threads to processors as is done in the Linux OS? In terms of throughput, what is the advantage of Gang Scheduling?

How can I use pselect to invoke a thread when a packet is added to my linked list?

Explain how kernel level threads in the same process are able to have shared memory. Be specific in terms of process layout and memory map. Give a possible approach for a user-level threads package to support memory needed for multiple threads without OS support. Include what parts of memory are unique per thread and what parts are shared by all

The /etc/inittab file is one of the most important files on a Linux (and UNIX) operating system. It is read when the Linux /sbin/init program starts your system. The /etc/inittab file lists what programs to start depending on the run level. Provide a sample syntax (id:runlevels:action:process) of an /etc/inittab entry as follows: id = identify

Describe the abstraction of Simplified Process Control Block. Explain the Process States How does the Two-State Process Model works? Explain the Process Creation Describe the Five-State Process Model Describe Process State Transition Diagram with Suspend States. Compare the following: Memory Tables vs 1/0 Tables vs Process Tables, Briefly define

Write a C++ program that will be run in LINUX that demonstrates what happens to run threads if their process ends before they are finished executing. Demonstrate whether they still run, or what else happens.

Write program in C not C++. Done in Linux Create N processes ( N should be supplied on command line not as standard input ), all should say hi and report PID: (a) Using Thread (b) Using OpenMP

1.What is Multithreading and Describe the four benefit categories to multithreaded programming? 2. What is parallelism? What is concurrency? What is the difference ? 3. Using Amdahls Law, calculate the speedup gain of an application that has a 30 percent parallel component for (a) two processing cores and (b) four processing cores. 4. List and

Create a report that details how the Linux operating system works. Take this opportunity to describe the fundamental and generic components and features of an operating system (OS). Treat this as a generic discussion, and discuss how each OS would need to handle each of the following: Process and threads ? Memory management ? Process scheduling ?

Write a detailed report on memory management in Linux and Windows Client OS [ Windows10]. Report must cover the following topics in both Linux and Windows: management of physical memory, paging and algorithms for it, allocation of memory to processes and kernel, caching, virtual memory, swapping and paging mechanisms, working set and performance

For the Linuxoperating system use the following headings and answer each of 3 Questions briefly about the Linuxmanagement. Process Management 1- job scheduling 2- Synchronization 3- Deadlock Memory Management 1-Physical Memory 2-Virtual Memory 3-TLB Device Management(I/O handling) 1-device driver 2-polling 3-interrupts File management 1-File

what is the output and please explain the code how many processes and threads were created what are the contents of emilia.txt is line 28 important what is the purpose of dub2

1 void rem (void args) 2 3 4 5 void ram (void args) 6 7 18 19 20 21 8 9 int main(void) 10 11 12 13 14 15 16 17 22 23 24 25 26 27 28 29 30 printf(Blue d , ((int) args)) exit(0) 31 32 printf(Pink d , ((int) args)0) return NULL pidt pid pthreadt pthread int status declaring vars int fd open(emilia.txt, OCREAT OTRUNC OWRONLY, 0666) int subaru

Explain the following topics 1. Analysis of Linux memory management mechanism 2. Analysis of Linux Process Mechanism 3. Analysis of Linux kernel scheduler algorithm

What is the biggest example of implementing threads in user space ? What is the biggest disadvantage of this ? b) Why is a process table needed in a timesharing system and what are the field in a typical process table entry? c) What are the various process states. d) Name 2 scheduling algorithms.

1. Discuss the importance of knowing and understanding process management as a Linux System Admin. Talk about ways to manage and troubleshoot processes and the importance of being able to do so. 2. Discuss task management and the importance of scheduling tasks using various methods and tools. Explain why this would be critical to know and

Compare the Linux with Unix and Windows with following requirements Process Management Perspective Memory Management Perspective I/O Management Perspective File Management Perspective Network Management

Outline the business continuity management strategy and change management process of the organization Ibos and how Red Hat enterprise Linux is impacted.

In Linux, a new process is created by calling fork(). While we generally think of fork() as a system call, in actuality the function is a wrapper around the clone() system call, which does the real work of creating a new process. See the Notes section of the man page for fork() for additional details. To create a new thread, threading libraries

Discuss the pros and cons of the various process management algorithms in Process and Thread Management. Given a choice, which algorithm would you prefer to implement and why?

Linux has a unique way of implementing threads: For the Linux kernel, there is no concept of a thread. Instead, there are processes that may, or may not share resources with other processes. This approach differs greatly with operating systems such as Sun Solaris or Microsoft Windows, which have explicit support for threads. 1. Creating "threads"

Process Thread 1 m Thread 2 Time

What are the Types of Process and Thread in Operating System? Explain All. Furthermore, Explain Process Scheduling with the help of valid diagram in respect to Linux OS.

Perform a case study on Ubuntu Linux Operating System. Submit your findings in the form of a report. Your report may include details of the following features of the operating system. / 1. History of the OS 2. Layered Software Architecture 3. Multimedia Support 1 4. Processes and Threads 5. Memory Management 6. 1/0 Handling 7. File Systems 8.

Write brief definition of each keyword PC (interposes communication) Types of IPC jacketing kernel-level thread lightweight process multithreading thread vs process user-level thread o states of ULT kernel-level thread thread: process Objects in windows with examples Benefits of Interrupts as threads Activity Service Content Service

Understand the basics of an Object-oriented Programming language. Explain the benefits of object oriented design. Evaluate when to use Object-oriented design methodology. Explain how objects are used in Object-oriented programming. Explain the steps in creating an Object-oriented program. Explain how to compile a program and debug codes. Be able

Write pseudocode for program which allow the user to input hisher age. Then the program will show if the person is eligible to vote. A person who is eligible to vote must be older than or equal to 18 years old.

Consider the object-oriented design of an ATM that provides the following functions for saving and checking accounts: 1. Withdrawal 2. Deposit 3. Balance Enquiry 4. Close Account Give the names of five objects that could be part of the design: Give the names of two subjects that could be part of the design:

What are the global issues that would affect information security policies, especially policies that may be in place today, within an Information Technology organization?

Can structured techniques and object-oriented techniques be mixed? In other words, is it possible to do structured analysis and then object-oriented design of the application or vice versa? In some situations, it may be possible to mix and match, such as when designing and implementing the interface using OO after completing traditional structured

What are the differences between object-oriented design and object-oriented analysis? Would it be a good idea to combine these two phases into one? Explain your opinion by providing arguments for and/or against combining these two phases. Explain the benefits and/or problems associated with combining these two phases.

Define and explain each point mentioned With Help Example , Example Can Be Program Of Diagram

Object anything a programmer needs manipulated ObjectOriented Programming (OOP) techniques Inheritance Modularity Polymorphism Encapsulation ObjectOriented Analysis (00A) Model of object interaction, not solution ObjectOriented Design (OOD) Solution based on constraints

Below is the UML class diagram for a University Management system. You should modify and/or redraw the class diagram for a University Management system and make the following improvements: (a) Correct any improper uses of UML syntax. (b) Improve the object-oriented design, in terms of what classes are chosen or what state/behavior is provided in

class Student private String name private int id private ArrayList courses public void add(Course c) public void drop(Course c) public ArrayList getCourses() public int getID() public String getName() public void setCourses (ArrayList courses) public void setName(String name) public void setiD(int id) extends class Undergrad extends Student

Implementing an objectoriented design generally involves using a standard object oriented programming language (OOPL) or mapping object designs to databases. Draw an appropriate class diagram and an example of object diagram as designed in the Circle Table as shown in Table 1 below Cid C1 C2 C3 xcord 5 5 8 Table 1 ycord 5 7 8 radiius color wwwwww

Write a simulator for a single que and multiple servers using an object-oriented design as described in the lecture (m1qsys.java) Write a simulator for multiple queues and multiple servers using an object-oriented design as described in the lecture(mmqsys.java) Run simulations for the following parameters: number of servers 3, Mean inter-arrival

Interarrival Service time follow poisson distribution Job generation SingleQueueMultiple Servers Interarrival Service time follow poisson distribution J6 Job generation J26 FIFO Queue J5 J4 J 3 MultipleQueuesMultiple Servers FIFO Queues J16 J15 J14 J13 J12 J11 J2 J1 J36 J35 J34 J33 J25 J24 J23 J22 J21 J32 J31 Server1 Server2 Server3 Server1

Smulate a fast-food hamburger restaurant. Use your knowledge of fast food joints to describe at least four (4) different kinds of objects (along with their responsibilities and interactions) that would be likely to appear in an object-oriented design of running a fast food place.

Consider an online course registration system that allows students to add and drop classes at a university. Give the multiplicities of the associations between these class pairs. 1. Student-Course 2. Course-Section 3. Section-Instructor 4. Section-Room

Write a simulator for a single que and multiple servers using an object-oriented +Write a simulator for multiple queues and multiple servers using an object-oriented design

Interarrival Service time follow poisson distribution Job generation J16 J26 FIFO Queues MultipleQueuesMultiple Servers J15 J14 J13 J12 J11 J25 J24 J23 J22 J21 J36 J35 J34 J33 J32 J31 Server1 Server2 Server3 Statistics collector

Use object-oriented design to design a class called Rectangle that will receive the length and breadth of a rectangle, validate the input data and calculate and display the area of the rectangle. a Design the class table. b Write an algorithm for each operation. c Write a test or driver algorithm to test the solution.

Discussion in the software development community is whether or not object-oriented design facilitates a software engineering process. (a) In some detail, discuss your opinion on this issue. (b) Provide three (c)references, other than from your course notes, to support your position.

Give an object-oriented design for an automatic bank teller (ATM) machine to perform the following operations on savings and checking accounts: deposits, withdrawals, and balance inquiries. Use Rumbaugh notation as discussed in class for OOA/OOD. Do not use more than four classes/objects for your design

Explain the five key activities in an object-oriented design process with example a. Define the context and modes of use of the system; b. Design the system architecture; c. Identify the principal system objects; d. Develop design models; e. Specify object interfaces.

Describe design within the context of software engineering. The design process in the software quality guidelines and attributes, the evolution of software design. Design concepts in the context of abstraction, architecture, patterns, separation of concerns, modularity, information hiding, functional independence, refinements, aspects,

Draw a class diagram according to the information presented in the sequence diagram for this very first use case. Please add comments to your UML diagram

Data Base Assert confirmed true Assert userid 0 1 X Alt Customer loginButtonClick() loginDialog GUI getFullName SQL query(name) MainWindow matchCredentials SQUquery(name, passwd) Send a message if login failed, Otherwise, update status and enableupdate buttons. message String LoginDialog okButton Click() Boolean cancelButtonClick() Boolean X

Complete the UML Class Diagram for the Vending Machine Program as it is given , using Visual Paradigm. Suggest two design improvements by referring to at least two principles of Object-Oriented Design discussed in class. Explain your choices in writing.

package midtermreview import java.util.Scanner public class Vending MachineItem public double price public static String candies chocolate bar, sour candy, soft drink, potato chips public VendingMachineItem() intentionally left blank public double getPrice() return price public void setPrice (double givenPrice) price givenPrice public

what are foreign country check scams? How is a computer data-base being used to help endangered species? what is the? object-oriented design what techniques does it use? How is it benefiting users listening to music on the Internet? should computer prof sessional be licensed?

Object-oriented design of an airline passenger reservation program, suppose that 'airplane' has been identified as one object and 'airplane seat' has been identified as another object. Focusing specifically on the airplane object, how does it relate to the airplane seat object?

Develop an ObjectOriented design for the following image. (What classes would you define What properties (if any) What methods (if needed) Write python code that shows what you see in this image (products, price, code, shelf...) MAY TICKA Enispers poritos 32 gits. Doniter BELOS 41.76 Legones STW hettoy CROOL

Draw the sequence diagram for this use case. Draw the final design class diagram Firstcut Design Class Diagram BookBorrowineHandler User integer (y) name string address string date integer (key) SEN string Loan How date date date Book ISBN ring(key te string author string status siting

Automate Recruitment Software System based on applicant tracking according to his/her skills. You may make any reasonable assumptions about the systems when deriving the design. Identify possible objects in the system and develop an object-oriented design Draw a UML state diagram showing the possible state changes and Draw a sequence diagram

Write a Python program that asks the user to enter his or her weight and the name of a planet. The program then outputs how much the user would weigh on that planet. The below table gives the factor by which the weight must be multiplied for each planet. The program should output an error message if the user doesnt type the correct planet name.

Write method distance to calculate the distance between two points ( x1 , y1 ) and ( x2 , y2 ). All numbers and return values should be of type double. Incorporate this method into an application that enables the user to enter the coordinates of the points.

Write a new pattern from your own programming experience. Think of a problem that you ended up solving more than once, and describe the problem and solution in the pattern format.

Give an example of a feature from Java or C++ that promotes each of the following object-oriented design principles: code reuse, type safety, abstraction, and encapsulation. Give another example that violates each of these principles.

Create a tic tac toe game with the following material : Use classes/objects Use polymorphic objects Use stream objects for input and output Use exception handling Use functions to solve problems Use conditional statements, loops Strings, and other variables. Demonstrate good use of Object-Oriented design including polymorphism,

a) List the various steps that need to be followed for object-oriented design process. b) Software maintenance is often seen as an inferior activity to software development. Suggest five steps which software managers might take to improve the motivation of maintenance staff?

What steps take place in a typical software development life cycle? "Discuss about significance of the design phase. Is it important to spend a good deal of time designing rather than implementing? Why/why not?"

1. What are the 5 key activities in an object-oriented design process? 2. Briefly describe 3 approaches that may be used to identify object classes? 3. How do design patterns contribute to reuse? 4. What are the principal aims of software configuration management?

Describe the validation processes used throughout an object-oriented design process. Reason the placement of each validation step in the process and what is the purpose of each validation? You must post your initial response

Write an application that prompts the user for the radius of a circle and uses a method called circle Area to calculate the area of the circle.

Object-oriented design allows us to encapsulate data and methods together; it is an important concept in programming. Describe at least one way we could use classes/objects within our programming to model some real world entity.

Discuss the pros and cons of: functional decomposition, data flow design, design based on data structures, and object-oriented design for the design of each of: a compiler, a patient monitoring system, and a stock control system.

Write a method squareOfAsterisks that displays a solid square (the same number of rows and columns) of asterisks whose side is specified in integer parameter side. For example, if side is 4, the method should display **** **** **** ****

Provide a generic object-oriented design for Graphical User Interface (GUI) of any application based on our class discussion on the various components and controls used in a GUI.

Create a Java program using the design shown in Fig. : Object-oriented Design for Multilevel Inheritance . (refer below). In the Java program, all attributes and methods MUST be present. Every method MUST be implemented. Please exercise your imagination.

Class A Attributes a Methods get a() dispa() Objects nil Class B Attributes b C Methods getb() getc() sum() dispa() Objects nil Class C Attributes d e Methods getd() gete() dispe() suml() sum() Objects cl

a) Discuss the different tiers/layers that make up a typical enterprise system design. Include a diagram as part of your discussion. b) Based on the answer given to Question 3(a), briefly discuss one reason why such a division is necessary for enterprise systems. c) Compare and contrast the Singleton and Registry patterns as object-oriented design

What is the relation between coupling and cohesion? Explain object-oriented metrics and identify five (5) attributes of software quality Explain stepwise refinement ? How a software development team knows how the software will perform what it needs to do at the early steps of the refinement process. Discuss how refinement can be seen as the

Apply Object-Oriented Design principles to build a domain model for the concepts below. Your model should be documented in a UML class diagram, and: You should use standard UML notations in your design. Inheritance is one of the key object-oriented design principles. Your model should apply inheritance whenever appropriate. When inheritance is

Chase Bank Checking Account Credit Card Chase Bank school Branch Savings Account Debit Card ATM Machine Monthly Statement Account Owner Transaction

what SOLID Object-Oriented Design (OOD) is? List the parts and a short description of each.

Describe what a class is in terms of objectoriented design and programming. You are welcome to use an example, but you must also explain the concept. 7 points For the toolbar, press ALTF10 (PC) or ALTFNF10 (Mac). TTT Arial 3 (12pt) TE Path p Words 50

Describe what each of the below listed principles entail: 1. Object responsibility 2. Separation of responsibilities (or separation of concerns) 3. Protection from variations 4. Indirection 5. Coupling 6. Cohesion

Create software project that integrates object-oriented design principles. This application is a simple calculator that automatically calculates and stores money in the right place. Some of the money goes to utilities, savings account (60% of leftover money after bills paid), and for entertainment (40% of leftover money after bills paid).

ObjectOriented Design and Protocols Focussing on one aspect of the partial specification of the ATM When the machine is idle, a greeting message is displayed, provide a list of candidate protocols for this responsibility.

What are the two key steps in the Object-Oriented design process? What is the outcome after performing an O-O detailed design analysis? In other words what is the deliverable once this has been completed? What are some major differences between procedural languages and 4th Generation languages?

Explain the following terms as they apply to Object-Oriented Design Principles. Abstraction Encapsulation Modularity Explain the following terms as they apply to Object-Oriented software implementations. Rubustness Adaptability Reusability -

Explain the following with with reference to software with one example for each i. Function Oriented Design ii. Data Flow Diagram (DFD) iii. Decision tables iv. Conditional statement.

what kind of object-oriented design (OOD) are slots and signals?

State the Liskov substitution principle and in what phase of the software development process this principle is used. Explain how it can be verified that a software program satisfies this principle Consider the software design solution shown in figure. Describe the relationship between the three classes. Analyze the design solution and determine

Table cost weight colour Buy() Sell() Furniture cost weight colour Buy() Sell() Chair cost weight colour Buy() Sell()

Describe the differences between the structured design methodology and the object-oriented design methodology. Why do the principles of structured design start to break down in today's software development initiatives?

Consider a singleoutput, nonpreemptive queueing system. It has three queues connected to the single output, and packets in the queues are handled based on a strictpriority order. The three queues have, respectively, Poisson arrivals at rates 11, 12, 13 packetssec, average packet sizes X1, X2, X3 bits. Queue 1 has the highest priority, Queue 3 has

write a code in java, there are 2 queues , reverse the first queue and delete the middle element then put it in queue 2

Make a java program that uses Queue as a part of the priority queue in java. Until package. Create a queue and perform the following operations Add the elements in the queue in the following order: 1, 17, 40, 52, 76 Access the element using peek Remove the element of the queue (76) and display the remaining elements Implement stack and its

Information packet queuing system at a gateway is M/M/10/10. The average packet arrival rate is 250 packets/second and the gateway responds with an average service rate of 50 packets/second. What is the probability of blocking the system? Information packet queuing system at a gateway is M/M/10/10. The average packet arrival rate is 250

Create a user-Defined Abstract Data Type named Queue - Use an appropriate set of C++ header/implementation files - Queue is implemented as a dynamically allocated array -implemented as a circular queue - queue consists of 0 or more QElement values - QElement is an exportable standard library double data type Exportable operations: (declared in .h

Required header file (.h). only partially specified General description of the ADT and supported operations exportable operations only Do not include any implementation details ifndefQUEUEH define QUEUE H typedef double QElement class Queue public exportable General description of each of the ADT operationsfunctions exportable operations