Premium Essay

Contrast and Comparison of Operating Systems

In: Other Topics

Submitted By jetman4u2c
Words 3967
Pages 16
Contrast and Comparison of Operating Systems Team B will take what we have learned from our course POS/355 Operating systems and research to compare and contrast the UNIX/Linux, Microsoft Windows, and MacOS systems. In particular we will contrast and compare the different operating systems in regards to memory management, processing, file management and security. Operating systems at the core is all about the kernel. The kernel in all of the operating systems is the main component that is responsible in the management of memory, processing, file management and security.

Contrast and Comparison of Memory Management within Operating Systems
Memory management in comparison and contrasts between the different operating systems is due to the way the kernel works in conjunction with the memory. Since each operating system has different kernel’s they each have similar and different ways that they manage memory. Contrasts and comparisons on Mac OS, Windows, and UNIX/Linux are described below.
1. UNIX: Though UNIX and Linux are extremely similar when it comes to how things work internally; there are slight differences that make UNIX distinct from its counterpart. One process that UNIX utilizes is known as swapping; this is done by moving chunks of the Virtual Memory (called pages), out of the main memory and moving others in. In order for this process to work at its best, those pages that are needed must be accessible in the Main Memory at the demand of the CPU. When a page is expected to be needed in the very near future it is termed a resident set. If the CPU attempts to access a page that is no longer available in the Main Memory, a page fault will occur, and the needed page will then have to be located, as the CPU waits for the swap to occur. These types of errors can occur due to memory allocation issues. The main purpose of the Memory Manager is to minimize...

Similar Documents

Premium Essay

Operating Systems Comparison and Contrast

...An operating system, or OS, is a software program that enables the computer hardware to communicate and operate with the computer software. Without a computer operating system, a computer would be useless. As computers have progressed and developed so have the many different operating systems. We will talk about the different operating systems and how they compare and contrast as far as their security and memory management. The first operating system we will compare and contrast is Windows Vista and the security features it offers. Windows Vista is an upgrade to Microsoft Windows XP and Windows 2000. When it comes to security and Windows vista, Windows Vista can help protect your PC and the people that use it by providing safety and many security features. One feature includes Bit Locker Drive Encryption. Bit Locker Drive Encryption is a security feature that provides data protection by encrypting all the data that is stored on the Windows Operating System. Windows Vista also has Encrypting File system available which is similar to Bit Locker Drive Encryption except that it is for user level file and folder encryption. Drive Encryption is good if you have two users sharing the same computer. Another security feature for Windows Vista is Parental Controls. Parental Controls are to protect your children and for restricting them to certain areas of your computer. Parental Controls help parents determine which games their children can play or......

Words: 750 - Pages: 3

Free Essay

Pos421

...File Systems and Windows Versions Comparison and Contrast Joel D. Belew University of Phoenix There are many different versions of Windows operating systems and software. Each has a different ability or use as the technology for each was increased and or changed over time as each was used. Some of the major versions of Windows include: Windows Server 2003, Windows Server 2008, Windows 200, Windows XP, Windows Vista, and Windows 7. These versions all have some similarities as well as differences that make them separate from each other. The following paragraphs will lists some of the comparisons and contrasts that make each individually different. The common file system used for most all of Windows versions including: Windows NT, Windows 2000, Windows XP, and all successors to these versions are the New Technology File System or NTFS. This file system has taken the place of the File Allocation Table or FAT file system and the High Performance File System or HPFS. The NTFS allows for better metadata support as well as advanced data sets giving the versions more performance, space, and security extensions. These upgrades have become the standard for today’s use until the release of better technology. The current version of NTFS commonly used is an on-disk format v3.1 created for use with Windows XP. This version is included with all versions of Windows operating systems following XP. Other filing systems that were used during releases of NTFS include: FAT, A FAT......

Words: 735 - Pages: 3

Premium Essay

Compare and Contrast

...Compare and Contrast name POS 355 date instructor Compare and Contrast This paper will give a comparison and contrast between and mainframes and Personal Computers. Over the years personal computers and mainframes have made huge advances over the years. Personal computers are just what they are called personal computers while mainframes are used for large businesses and organizations for multiple users. Both have had enormous changes over the years, dumb terminals have evolved into what we now call personal computers. Mainframes started out as very large machines, they use to occupy anywhere from 2,000 to 10,000 square feet sometimes more. They are now around the size of other types of commercial-use computers. We have personal computers because of mainframes they are part main frame and part dumb terminal. This is why mainframes and personal computers have the similarities that they do. Both mainframes and personal computers have one or more central processor units, I/O systems, busses, and memory. They are both systems that are IBM-based and they are both built using similar hardware. The calculations and actions that they perform are the same. The physical design has stayed the same for many years now. They both have memory, a display, a processor, storage, and an operating system. In the past mainframes could access more space than a personal computer making them a very important tool. Mainframes were able to retrieve many times more memory......

Words: 614 - Pages: 3

Premium Essay

Acct

...IFRS and GAAP Valeria Torres Acc/290 05/02/16 Comfort Chevannes What are the main diffrences between IFRS and GAAP International Accounting Financial Reporting Standards AKA IFRS and Generally Accepted Accounting Principles AKA GAAP are two financial reported systems that govern and principles to the accounting world. Both systems require specific financial documents and have specific standards to follow in terms of accounting for inventory and how they define assets. What will be further discussed will be key diffrences in the two financial accounting reporting systems. IFRS 2-1: In what ways does the format of a statement of financial or position under IFRS often differ from a balance sheet presented under GAAP? IFRS and GAAP’s difference in the format of financial position on the balance sheet is the order in which liquidity is reported. In the balance sheet under GAAP the degree of liquidity is taken highly into consideration, meaning that cash under currents assets is the first to be recorded followed by longterm asstes, liabilities and then share and stock holders equity. IFRS on the other hand doesn’t require any type of recording order. So it can start with Liabilities, and work its way down the line to current assets, cash. IFRS 2-2: Do the IFRS and GAAP conceptual frameworks differ in terms of the objective of financial reporting? Explain IFRS and GAAP’s conceptual framework do not differ in terms of the objective in......

Words: 909 - Pages: 4

Free Essay

Java

...achieving an operating profit in FY07, the first time since FY01. JAVA recorded three consecutive quarters of positive EPS in FY07 and is now targeting an operating margin of at least 10% in FY09. However, underlying this growth is a scenario that bristles with complexities, and not everything is as rosy as it seems. For instance, growth appears anemic—sales are expected to rise in low single digits this quarter. And it’s not yet clear whether JAVA is making new money through open source or simply finding new ways to save money. All eyes are now on Jonathan I. Schwartz, who took over as CEO of JAVA from Scott McNealy in Apr-06; justifiably so, because Schwartz is not merely seeking to turn around operations by paring payrolls, reducing headcount, and restructuring. He has set out to redefine the way a company can do business in the new Web age. If Schwartz can reestablish Java as a credible trendsetter, it would make for one of the Valley’s more spectacular comebacks. We analyze whether Schwartz’s pronouncements of growth objectives match JAVA’s performance across sectors and whether the targets can be achieved by cost containment rather than revenue growth. We set out to gauge whether this turnaround is a temporary blip or a true resurgence. Management change and new objectives When Schwartz took over as CEO in FY06, he outlined five broad objectives: 1. FY07 revenue growth in low-to-mid single digits 2. FY07 gross margin of around 43% 3. Operating margin of at......

Words: 1427 - Pages: 6

Free Essay

Embeded Software

...Open Source vs. Closed Source Open source and Closed source, two topics that have become quite the buzz in the world Information Technology (IT). Chances are, if you work in IT, you will eventually be faced with having to decide on witch of these technologies you will have to go with when planning for an upgrade or new IT system implementation. Before choosing which technology to go with we as IT professionals must first understand the difference between the two as well as carefully weight the benefits and disadvantages of each solution. An Open Source Operating system refers to software whose source code, the medium in which programmers create and modify software, is freely available on the Internet; whereas, by contrast the closed source code for proprietary commercial software is usually a closely guarded secret and is not available to the public. (Crooke, 2012) Notable open source operating systems include Android and Linux. Notable Closed source OS include Apple iOS. The two major benefit of using an Open source software is that the software is distributed under a variety of licensing terms, but almost all have two things in common: the software can be used without paying a license fee, and anyone can modify the software to add capabilities not envisaged by its originators. (Crooke, 2012) These benefit help to lower cost of products as well as offer customers the ability to customize platforms as needed to meeting business needs. The disadvantage that is......

Words: 803 - Pages: 4

Premium Essay

Acc 290

...Comparison between IFRS and GAAP Agustin Blanco ACC 290 06/06/2016 Dan Jensen Comparison between IFRS and GAAP This paper provides a comparison between the International Financial Reporting Standards (IFRS) and the United States Generally Accepted Accounting Principles (GAAP) and how they are differentiate from each other in the format of financial statement, conceptual framework, and IFRS terms. There is also a description of some issues the SEC must consider in order to adopt IFRS in the United States as well as a comparison of the rules regarding revenue recognition under IFRS versus GAAP. There is an explanation of the definitions Under IFRS for revenues and expenses, as well as an explanation of the competitive implications (both pros and cons) of Sarbanes-Oxley Act (SOX). Questions IFRS 2-1: In what ways does the format of a statement of financial position under IFRS often differ from a balance sheet presented under GAAP? The main difference between the formatting of IFRS and GAAP statement of financial of position and a GAAP balance sheet is the ordering of liquidity. IFRS does not require a particular order or any classification of accounts. It is common for companies to report assets in reverse liquidity under IFRS. Instead, GAAP specifies and requires all a company’s account be classified and ordered based on liquidity. IFRS 2-2: Do the IFRS and GAAP conceptual frameworks differ in terms of the objective of financial......

Words: 957 - Pages: 4

Premium Essay

Comparison and Contrast Between Ultrabooks and Tablets

...Comparison and Contrast between Ultrabooks and Tablets Thesis Statement Ultrabook PCs are superior to Tablet PCs based on comparison of market positioning, design concept, growth rate in sales and research and development of manufacturer. Introduction In modern time, computers have become an essential tool to assist people in dealing with their complicate lives and satisfying their fast footstep. To conveniently carry computers and efficiently use them in daily work, increasingly people pursue portability, utility and fashion. So Tablets and Ultrabooks are“born” at the right moment. In order to promote laptops, many manufacturers always campaign on the slogan "it is an Ultrabook" on the margins of Ultrabooks. So in 2011, Intel corporation conceived an Ultrabook and defined as “an Ultrabook ” is a mini notebook computer designed to provide similar or superior computing functionality as that of a standard laptop but with less size, weight and an extended battery life”. Now, the term has extended to refer to a new category of notebook computers that sits somewhere between lightweight laptops and Tablets. However, Tablets and Ultrabooks are obviously different. A Tablet computer, or simply Tablet, is a mobile computer with display, circuitry and battery in a single unit. We know that Tablets are often equipped with sensors, including cameras, microphones and touchscreens, and with finger or stylus gestures replacing computer mouse and keyboard. In this thesis, I will......

Words: 1336 - Pages: 6

Free Essay

Best Personal Computer

...Best Personal Computer Compare and Contrast Patience D. Roberson American Intercontinental University Abstract A summation of this essay is to distinguish the differences and compare similarities between three distinct computer models; Apple iMac, Dell Vostro 230 Mini Tower, and Lenovo Think Centre A58. Consumers can use the information from these three products to decide which one is best for their business. This essay will focus on each models processor, storage memory, video/audio, along with other features they have. Best Personal Computer Compare and Contrast A company’s computer is its most valuable entity. Employees must be able to proficiently use email, access associates and activities, develop papers, improve databases, access the internet and more. When running a business, it is essential that the best computers are being utilized. Companies have increasingly come to be dependent upon a computers innovative skill to keep track of information. Choosing the best personal computer for a business is not an easy decision. Apple iMac, Dell Vostro 230 Mini Tower, and Lenovo Think Centre A58 have received top ratings for personal computers. Their processors, storage memory, video/audio, warranty, and other features have placed them as the top three choices. The processors, usually called CPU, play a significant role to a computer. Any work done on a company’s computer is performed directly or indirectly by the processor. The processor determines the......

Words: 970 - Pages: 4

Premium Essay

The Byte of the Forbidden Fruit

...Nicole J Brown English 102 Martin Arnold Compare and Contrast The Byte of the Forbidden Fruit The bite of computation and processing has taking the world as we know to another dimension, From computers original content of meaning someone who can process and compute, to now meaning an electronic mechanism that can do it all. This device in itself has become more technical, profitable, marketable and even more personable. The device comes in all shapes and fashions, desktops, laptops, tablets, netbooks, your newer phone models are called "smartphones" now because it carries on as a mini computing device, and it can do just about as much as your normal computer can. These many devices now replace the functions once done manually by human effort. Then there is Apple Inc., it is in a class of it's own. At face value the ordinary CPU we now call PC's and the Apple Macintosh seem similar in structure, however the Apple Macintosh product rules supreme. Its build, its ability and its market value could never be coined similar to a personal computer. Let's talk about the build of the personal computer; it has more than one manufacturing brand that sells this device. You have Toshiba, Dell, Hewitt Packard, Acer, Gateway, and Samsung just to name a few. Each of these companies have there own way of custom building these devices. Take for instance, the device the laptop. The average laptop weighs about 5.48lbs give or take, depending on the manufacturing of the brand. Then there is......

Words: 977 - Pages: 4

Premium Essay

Google vs. Microsoft Paper

...In contrast, Microsoft is widely centered in the software support for businesses worldwide. In addition, Microsoft has successfully launched other products and services such as their search engine Bing, mobile phone, and Windows Phone software support, and social media- Skype. Google focuses on innovation practices, most recently, the addition of “Search plus your world” that will enable users to integrate their Google+ account and find friends in their social network. (Google Annual Report 2011) Google is also focusing on innovating practices to enlarge its dormant market share and incorporate “semantic search” a better way to match queries through word association, helping the site better understand the users query. Google also launched Google+ a social network comparative to Facebook. Finally, the Company recently acquired Android under its “Google Mobile”, a base of its mobile operating system. Currently the Android growth has been “impressive. Over 250 Million Android devices have been activated globally” (Google Annual Report 2012) By Contrast, Microsoft has continued to diversify its products for businesses to increase their efficiency and productivity including Windows 7, Office 2010 and Sharepoint. (Microsoft Annual Report 2011) Microsoft also recently launched “Office 365”, a subscription based offering of their cloud services and “Kinect” that increased the gaming features and Xbox 360. To stay in competition with Google, Microsoft launched “Bing” as their......

Words: 1142 - Pages: 5

Free Essay

Business 499

...Strayer University January 24, 2011 1) Compare and contrast the two businesses—core business, their size, financials, global presence, use of e-business (marketing, sales, etc.). A diversified company is one that has multiple, unrelated businesses. Unrelated businesses are those, which (1) require unique management expertise, (2) have different end customers and (3) produce different products or provide different services. One of the benefits of being a diversified company is that it buffers a company from dramatic fluctuations in any one-industry sector. However, this model is also less likely to enable stockholders to realize significant gains or losses because it is not singularly focused on one business. Investopedia (2011) states that companies may become diversified by entering into new businesses on its own, by merging with another company or by acquiring a company operating in another field or service sector. One of the challenges facing diversified companies is the need to maintain a strong strategic focus to produce solid financial returns for shareholders instead of diluting corporate value through ill-conceived acquisitions or expansions. Wal-Mart and Kmart; along with Target are the three primary retail giants in the United States. This paper will compare and contrast Wal-Mart and Kmart Corporations. According to......

Words: 1543 - Pages: 7

Premium Essay

Southwest Airlines Corporation

...Dhian Ayu Paramita Management Control System Assignment 12/335910/EK/19096 Discussion Questions -- Case 3.1 Southwest Airlines Corporation Question 1 : What is Southwest’s strategy? What is the basis on which Southwest builds its competitive advantage? One of the goals of the company is to achieve its goals which can be seen through the Vision. Southwest’s Vision “ To become the World’s Most Loved, Most Flown, and Most Profitable Airline” can be achieved by planning good strategy. Strategy is also needed in order to achieve Southwest’s goals and purpose, which is “To connect People to what’s important in their lives through friendly, reliable, and low-cost air travel”. The main strategy of Southwest is the capability of the company to manage and take advantage of its competitive advantage. Major competitive advantage of Southwest Corporation is its people, just like current CEO Gary Kelly said on company’s official website : “Our people are our single greatest strength and most enduring long-term competitive advantage”. Additionally, Southwestt keep developing its sustainable competitive advantage by using Generic Competitive Advantage. It was the advanced of Michael Porter’s Five Force Analysis Model consist of Low Cost or Differentiation. a) The Low Cost Strategy or Cost Leadership Southwest used tight cost control and cost minimization by keeping their cost of goods sold low but not as an exchange of satisfaction of the......

Words: 1043 - Pages: 5

Premium Essay

Covidien Company Info

...they have created innovative new products through their own increasingly substantial investments in research and development (R&D). Covidien has launched 60 new products in 2008 and 2009, compared with fewer than 20 in 2005 and 2006, this were the last two years of Tyco healthcare before it become Covidien. Competition – Covidien is engaged in the development, manufacture, and sale of healthcare products, including pharmaceuticals and medical supplies, for use in clinical and home settings. One of Covidien’s main competitors in the healthcare equipment and supplies industry is Baxter International (BAX). Other competitors in the healthcare sector include: C.R. Bard (BCR), and Becton, Dickinson (BDX) Direct Competitor Comparison | COV | BDX | BCR | JNJ | Industry | Market Cap: | 27.04B | 15.15B | 8.26B | 197.90B | 182.76M | Employees: | 41,300 | 29,369 | 12,100 | 129,000 | 328.00 | Qtrly Rev Growth (yoy): | 0.03 | 0.02 | 0.02 | 0.07 | 0.12 | Revenue (ttm): | 11.93B | 7.97B | 2.94B | 65.92B | 95.72M | Gross Margin (ttm): | 0.58 | 0.51 | 0.62 | 0.68 | 0.53 | EBITDA (ttm): |...

Words: 891 - Pages: 4

Free Essay

Linux

...[pic] |Course Syllabus College of Information Systems & Technology POS/420 Version 9 Introduction to UNIX® | |Copyright © 2010, 2009, 2008, 2006, 2005, 2004, 2001, 2000 by University of Phoenix. All rights reserved. Course Description This course is a survey of the UNIX® operations. The student will gain an understanding of the internal operations of the UNIX® system, which enables the user to make efficient use of files, file systems, and processes. Commands for efficient management of UNIX® system files, file systems and process, systems administration and security are also examined. Policies Faculty and students/learners will be held responsible for understanding and adhering to all policies contained within the following two documents: • University policies: You must be logged into the student website to view this document. • Instructor policies: This document is posted in the Course Materials forum. University policies are subject to change. Be sure to read the policies at the beginning of each class. Policies may be slightly different depending on the modality in which you attend class. If you have recently changed modalities, read the policies governing your current class modality. Course Materials Blum, R. (2008). Linux® command line and shell scripting bible. Indianapolis, IN: Wiley. Love, P., Merlino, J., Zimmerman, C., Reed, J. C., & Weinstein, P. (2005). Beginning Unix®. Indianapolis, IN: Wiley. Software RedHat Linux 5......

Words: 1560 - Pages: 7