Assignment Questions On Operating Systems

Therefore features such as hardware caching or data dependency optimizations to increase average performance are undesirable in Chimera. Further, inter-process security is also given up to reduce system overheads in performing system calls as all the processes running on a single CPU are meant to be invoked by a single user and processes have equal privileges. Since real time programs are short repetitive operations with minimum dataset and instructions, virtual memory is not required thus eliminating memory management overhead from process context switch operations.

Increased throughput: If there are n processors, then n tasks can be executed at simultaneously. So the work will be completed in less time. So in single processing system only one process can run at a time but in multiprocessing if there are 2 different programs, it can run on 2 different processors. This is called as parallel processing. The amount of work completed through multi-process systems is high compared to that of single processing

Windows XP was based on Windows NT4 and Windows 2000 technology. Microsoft was positioning the Windows XP Professional Edition to replace Windows NT4 and Windows 2000 Professional. In addition, the Windows XP Home edition replaced Windows 95/98/ME (TechGenix Ltd., 2002). The gap between the Home and Professional Editions begins to widen when it comes to larger computer networks. Some of the features that are limited to the Professional Edition are Remote Desktop, Offline Files and Folders, Scalable Processor Support, Encrypting File System, Access Control, Designed to manage Microsoft Windows Servers, Centralized Administration, Group Control, Software Installation and Maintenance, Roaming User Profiles, and Remote Installation Service.

1. You have obtained a new utility, called watchit, to monitor security on your computer,

A multiprogramming is used to keep the CPU busy most of the time, i.e. increase utilization of system CPU. This is due to the fact that multiprogramming is performed by job scheduling, i.e. with the subset of all the jobs kept in memory. Thus when CPU has to wait, then OS switches to another job for keeping CPU busy.

The Unix operating system is a powerful programming environment designed by and for computer programmers. Unix is available on a wide variety of computer systems, including personal computers, workstations, mainframes and supercomputers. It was developed for, and is particularly well suited to, multi-user systems, but is now also run on 'stand-alone' machines.

10. You are using the grep command, but it is only searching through files in your immediate home directory. What option enables you to search through subdirectories below your home directory?

Linux is an operating system that is developed by multiple companies and developers. It is similar to operating systems such as Windows and MAC. However there are differences between Linux and other operating systems out in the market right now. Just like any operating system, Linux has its pros and cons as well. The decision on which operating system I superior is completely up to the user.

In this report I am going to be covering the differences between policies and procedures, including what they are like Procurement, Costs, Helpdesk and Reporting, Tend Analysis, Problem Escalation, Disposal Policy, Health and Safety and PAT Testing and then I am going to talk about why these are important and what dangers could impact on the policies and procedures if the following are not done.

An operating system, also known as OS, is a software on the hard drive that allows the hardware of a computer to communicate and operate with the computer software. The OS is the most important software running on a computer because it handles the memory, processes and all of its software and hardware. The OS helps coordinate all the programs that can access your CPU, memory and storage so that each program gets what it needs. Without the operating system a computer and its software would be completely useless.

An operating system is a vital component of the computer system. The common and simple devices like refrigerators and microwave ovens does not have an operating system. The complex systems which handle several components, functions and processes usually have an operating system. The operating system is like the brain of a human being, the brain is an essential organ in the body of human being which sends signals and helps functioning of the human body. Our intelligence, attitude, emotions and senses defines our presence, all these are possible because of our brain. In similar manner, “Operating System” (OS) is the power behind a computer system. In other words, operating system is brain of the computer and processor is the heart of the computer. A computer is the concatenation of several hardware parts. The operating system manages computer hardware resources and provides common services for computer programs and other application software.

Linux is a trademark owned by Linus Torvalds [1]. It is an operating system which is powerful, free and inexpensive to own based on UNIX [1]. It is a POSIX-compliant with versions available to install in cell phones, supercomputers and most computing systems [1]. Linux is an open source program as its source code is available to the general public for use and the right to modify from its original design without any charges [1]. New code will be added to the next version made available with Linux if it is accepted as a universal improvement [1]. The code will continue to exist and developed by the user even if the company fails [1]. Moreover, updates for Linux are available every six months [1]. Nowadays, Linux is in constant development by

Both Windows and Linux come in many different forms. All the different forms of Windows come from Microsoft, the various distributions of Linux come from different companies (ex. Red Hat, SuSE, Linspire, Ubuntu, Mandriva, Knoppix, etc). Windows has two main lines: “Win9x”, which is consists of Windows 95, 98, 98SecondEdition and ME, and “NT class” which consists of Windows NT, 200 and XP. On a side note, Windows first had version 3.x which was made before Windows 95 by a couple of years. The various types of Linux are called distributions. All the Linux distributions released around the same time frame will use the same kernel, which are the guts of the OS. They will differ with the add-on software provided,

What is Operating System Security, Operating system security is the process of ensuring OS integrity, confidentiality and availability also OS security refers to specified steps used to protect the OS from threats, viruses, worms, malware or remote hacker. OS security include all avoiding-control techniques, which safeguard any computer information from being stolen, edited or deleted if OS security is included. OS security allows different applications and programs to perform required tasks and stop unauthorized interference. OS security may be applied in many ways. We 're going to discuss following topics in this article. A brief description about security and what are the types of encryption and what is Authentication, One Time passwords, Program Threats, System Threats and Computer Security Classifications.

In Windows, you can run lots of different program programs. There are customized programs and off-the-shelf (common) programs. These allow you to do everything from running your bowling league to typing up a correspondence.