...start when trying to understand the basics of any computer hardware system would the operating system. Operating systems are a program which manages the computer’s hardware. These systems provide a basis for application programs and intermediate between the computer’s user and its hardware. There are many different types of Operating serves that are available to use. There are four main Operating systems that are used in today’s Technological world: UNIX, Linux, Mac, and Windows. Each one of these systems has its own unique aspects to offer users, while still sharing the same basics that an operating system needs. Memory Management UNIX/Linux In comparison to other operating systems, UNIX is quite different when it comes to managing its memory. It uses extremely sophisticated memory management algorithms to make the best use of memory resources. Though UNIX and Linux are extremely similar when it comes to how things work internally, there are slight differences that make UNIX distinct. One process that UNIX uses is Swapping; this is done by moving chunks of the Virtual Memory, known as 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 called a resident set. This can lead to errors due to memory allocation issues. If the CPU attempts to access a page...
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...to start when trying to understand the basics of any computer hardware system would the operating system. Operating systems are a program which manages the computer’s hardware. These systems provide a basis for application programs and intermediate between the computer’s user and its hardware. There are many different types of Operating serves that are available to use. There are four main Operating systems that are used in today’s Technological world: UNIX, Linux, Mac, and Windows. Each one of these systems has its own unique aspects to offer users, while still sharing the same basics that an operating system needs. Memory Management UNIX/Linux In comparison to other operating systems, UNIX is quite different when it comes to managing its memory. It uses extremely sophisticated memory management algorithms to make the best use of memory resources. Though UNIX and Linux are extremely similar when it comes to how things work internally, there are slight differences that make UNIX distinct. One process that UNIX uses is Swapping; this is done by moving chunks of the Virtual Memory, known as 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 called a resident set. This can lead to errors due to memory allocation issues. If the CPU attempts to access a page that...
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...UNIX /Linux versus MAC versus Windows Paper POS/355 March 11, 2013 Bhupinder Singh UNIX/Linux versus MAC versus Windows Paper Introduction Today we live in a world where technology is the way to go. Even in this century there are people that are still clueless on the operating system. It is different, exciting when a new and advance system comes out. But some of us are so confused when it comes to the basics of new technology. Operating systems are programs which manages the computer’s hardware. The systems provide a basic for the applications programs between the computer user and its hardware. When looking, there are so many different types of operating systems that are available. The four main operating systems that are used are Windows, Mac, UNIX, and Linux. For every computer there are many different items that make the system a whole. When it comes to the different operating systems there are different features available, even though when you think of computers a person might think security will all be the same but there are difference between each one. As you read more you will understand the security and the difference between a MAC, UNIX/LINUX and Windows systems and how each one works. Access control goal is to protect a resource from unauthorized access while facilitating seamless and legitimate use of such resources. Presently, each day users hold the need to access to those resources through a broad line of devices...
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...|[pic] |Syllabus | | |College of Information Systems & Technology | | |POS/355 Version 9 | | |MU12BIT08 | | |Introduction to Operational Systems | | |Wk 1 June 10 | | |Wk 2 June 17 | | |Wk 3 June 24 | | |Wk 4 July 01 | | |Wk 5 July 08 ...
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...UNIX®/Linux® versus Mac® versus Windows® POS/355 October 29, 2012 Carol S. Eichling UNIX®/Linux® versus Mac® versus Windows® There are several computer operating systems available on the market, and it is sometimes difficult to choose. Therefore, it is important to compare the system capabilities to make the decision easier. The three biggest players in the operating systems market are UNIX®/Linux®, Mac®, and Microsoft® Windows® with Windows® holding the largest market share (Boitor & Brătucu, 2011). These three operating systems are capable of multi-processing and have similar capabilities; however, and it is important to compare and contrast how they handle memory management, process management, file management, and security, which are critical system functions. Discussing memory management, which is a vital component in operating systems, is first. Memory Management Memory management refers to the way a system makes use of the computer’s RAM (Random Access Memory). Many of the operating systems in use on computer systems have positives and negatives in their use of memory attributes. “Memory management is usually divided into three areas: hardware, operating system, and application…although the distinctions are a little fuzzy. In most computer systems, all three are present to some extent, forming layers between the user's program and the actual memory hardware” (Ravenbrook Limited, 2001, p. 1). There are several types of memory, including main memory, file system...
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...UNIX/Linux versus Mac versus Windows Rough Draft Annette Freshwater, POS355 November 4, 2013 Alicia Pearlman UNIX/Linux versus Mac versus Windows Final In today’s world of technology creation, development, and enhancement there are key factors to take into consideration. The choice of operating systems can determine the software and hardware utilized, the applications of the devices or programs, and determines the demographic, which will use the products. However the ever-changing field of technology has become more user-friendly, compatible, and more accepted in main stream than before. The main operating systems employed today are as follows: UNIX/Linux, Mac, and Windows. We will explore the various aspects of key components in these operating systems, memory, process, and file management along with the security of each system. The comparison of each system will determine the operating system best suited for the needs of our creations, projects, and improvements to the technology of the past, present, and future. MEMORY MANAGEMENT Memory management in multiprocessor systems is essential in executing several processes simultaneously. The multitasking of a system aids the user in accomplishing his or her task more efficiently than with a single processor system, which is important in the current climate of today’s multifaceted mix of professional and personal world. Why choose UNIX/Linux, Mac, or Windows to develop a device, product, or program? The...
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...terminology can seem a bit fuzzy from a metacomputing standpoint. But with the growth of the internet so too has the term WebOS become serious in the ranks of computing systems. There have been many attempts to hoard market share on Web Operating Systems like Microsofts Windows 2003 Server Web Edition (Pingdom, 2011). But basically WebOS Servers are common operating systems serving the public over the internet. Most of these are server editions vary among todays popular operating systems like Windows, Linux, MAC, and UNIX. An additional platform is usually common to layer on top of these operating systems and these come in various flavors as well depending on the function of the website. This paper will target the popular server operating systems that are common on the internet today with emphasis on why these systems are popular and some of the features these systems offer as systems suitable for internet servers. Windows Servers Without question Microsoft Windows bases servers are among the most popular servers on the internet today. Need proof? Just look for the .htm extention at the end of the URL and you will find that most websites are easily identifiable as a Windows based server (J. Kyrnin, About.com). Windows based servers are popular operating systems in general because they offer a wide variety of popular system platforms that are also commonly used on the web today such as Microsoft Hyper-V, Microsoft SQL Server, Microsoft Exchange, Microsoft SharePoint, and Microsoft...
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...The Ultimate Battle: PC versus Mac Throughout the past quarter century there has always been a huge argument between nerds and geeks all around the world: which is better, a PC or a Mac? If you want to get two nerds arguing in front of you that would be the question to ask. I will be discussing what I believe to be the key points in each system where one may outshine the other or where they may be equal, to determine which should be the best choice for the general, everyday consumer.My personal preference for computers is with PCs; however, I believe the final choice should be up to the customer based on the following points. First let’s start with the basics: how much is it going to cost? Immediately many people will tell you how expensive a Mac computer is and that a PC is so much cheaper. This I will have to agree with, but before we make that decision let’s break the PC and Mac down a bit. Mac computers come in a very short variety; you have the MacBook Air, MacBook, MacBook Pro, the Mac Mini micro desktop, the all in one iMac, and the Mac Pro power desktop. Not as many choices there as the PC and almost the entire line of Macs will carry at least $1,000 prices tags. Now that’s a very hefty price tag for a system that can’t be customized with the exception of what you get when you order it. PC’s on the other hand can range anywhere from $300 all the way to $3,000. But the main point here is how many options you have when it comes to choosing what you want with your computer...
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...explains memory management requirements. · Option 2: Write a 2-page paper that explains the differences in memory management between Windows® and Linux®. Format your paper consistent with APA guidelines. UNIX/Linux Versus Mac Versus Windows Write an 8- to 10-page paper that compares and contrasts the basic system differences between UNIX®/Linux®, Mac®, and Microsoft ® Windows® operating systems. Include discussion and comparison of the following: · Memory management · Process management · File management · Security Format your paper consistent with APA guidelines. Create a 10- to 12-slide Microsoft® PowerPoint® presentation based on the paper. Discussion Question Main Memory Should DMA access to main memory be given higher priority than processor access to main memory? What is the purpose and technique of DMA logic? Note: Be prepared to discuss in class. Do not submit a written response. POS 355 Week 2 Individual Assignment File Management Paper For this assignment, you will choose one of the following options: · Option 1, File Access: Write a 2-page paper that discusses the following: Consider a system that supports 5,000 users. Suppose you want to allow 4,990 of those users to be able to access one file. How would you specify this protection scheme in UNIX®? · Option 2, Protection Scheme: Write a 2-page paper that discusses the following: Consider a system that...
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...Assignments Individual IND.doc POS-355 Week 3 DQ 1.doc POS-355 Week 3 DQ 2.doc POS-355 Week 4 Assignments Individual IND.doc POS-355 Week 4 DQ 1.doc POS-355 Week 4 DQ 2.doc POS-355 Week 5 DQ 1.doc POS-355 Week 5 DQ 2.doc General Questions - General General Questions POS 355 Week 1 Individual Assignment Memory Management Paper For this assignment, you will choose one the following options: · Option 1: Write a 2-page paper that explains memory management requirements. · Option 2: Write a 2-page paper that explains the differences in memory management between Windows® and Linux®. Format your paper consistent with APA guidelines. UNIX/Linux Versus Mac Versus Windows Write an 8- to 10-page paper that compares and contrasts the basic system differences between UNIX®/Linux®, Mac®, and Microsoft ® Windows® operating systems. Include discussion and comparison of the following: · Memory management · Process management · File management · Security Format your paper consistent with APA guidelines. Create a 10- to 12-slide Microsoft® PowerPoint® presentation based on the paper. Discussion Question Main Memory Should DMA access to main memory be given higher priority than processor access to main memory? What is the purpose and technique of DMA logic? Note: Be prepared to discuss in class. Do not submit a written response. POS 355 Week 2 Individual Assignment File...
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...Introduction The most commonly known Operating Systems (OS) today are UNIX, Linux, MacOS, and Windows. These operating systems all behave in their own way and similar in others. This paper will discuss this comparison of how these operating systems utilize memory, process handling, file management, and security. Memory Management Each operating system is required to allocate a certain amount of memory for the operating system itself for the processes that are being used or executed. There are two places memory exists: physically on the motherboard of the computer and within the operating system itself. When the operating system dynamically divides the memory usage between these two areas, this is called memory management. Each operating system manages memory different from the others; however they all follow some basic rules of memory management. All of the operating system’s memory management in general follows these requirements: relocation, protection, sharing, logical organization, and physical organization (Stallings, 2015). Relocation of memory is the process that allows the operating system to move a process or file from physical memory to virtual memory and back again, depending on the need for that data. Virtual memory exists within the operating system which uses the hard drive to store temporary information and physical memory is located on the motherboard of the computer. While the process is in memory, protection of that area needs to be enabled to...
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...Linux has grown in popularity and capability over the years, but is it competitive with its competition. In this paper an overview of the Linux 2.6 Operating System (OS) and how it functions/performs on the technical level will be discussed. Comparisons to other retail OSs such as, Windows, Mac OS X, and prior versions of Linux will be used to show the strengths and weaknesses of this OS. “Linux was created by a student (Linus Torvalds) in Helsinki in 1991 with the assistance of developers from around the world. Linux is free, it shares its work with everyone — including competitors — and its business model is motivated primarily by adrenaline, altruism, and peer respect rather than by money. Yet, Linux's functionality, adaptability and robustness has made it the main alternative for proprietary operating systems, especially where budgets are a main concern.” (OEDB, 2007). As it is stated above Torvalds creation was a key proponent in creating the Open Source Movement, which has paved the way for the many distributions of the Linux Kernel. In the beginning Linus Torvalds was an IT student with the desire to test the limits of his current computer. During this time Torvalds was working with the MINIX OS which was create to be a cheap alternative to UNIX. Torvalds wanted to modify the kernel of MINIX and found that this was not possible so he began to create Linux. In the beginning Linux did not offer a lot of features and seemed to be lacking in ability (Diedrich, 2011)...
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...developers assigned to the project, it is possible that the vulnerability will go unnoticed. Open Source systems, as the name indicate, make all their source code available to the public. Everyone who knows enough programming skills, and is willing to read the source code, can debug it. In fact, this makes the debuggers numerous and worldwide. They read the source and debug it for their own reasons: maybe to help the Open-Source community or to learn or even to make their own personalized version of the product; the possibilities are limitless. As the debugging process gets this much world-wide spread, the Open Source products become relatively bug free (Ahmad, 2001). 2. Price Open-source operating systems such as Linux or FreeBSD do not cost anything, through some Linux companies, such as Red...
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...source infrastructure. This could potentially save us over $4,000,000 per year in licensing fees for the software we are currently using. However, due to our business needs; we must still comply with the Sarbanes-Oxley Act (SOX), Payment Card Industry - Data Security Standard (PCI-DSS), and the Gramm-Leach-Bliley Act (GLBA). We must comply with SOX, because we are a publicly-traded financial institution; PCI-DSS, because we process online credit card transactions; and GLBA, because we are a financial institution. All of the regulations of these three compliancy laws must be met, while still maintaining the Confidentiality, Integrity, and Availability (CIA) triad. All security requirements for SOX, PCI-DSS, and GLBA can be achieved using Linux and open source infrastructure. Some examples of open source software that we might use are: Web Server - Apache Web Filtering - DansGuardian Network Firewall - Turtle Firewall VPN - Endian Firewall Community IDS/IPS - Suricata Database - MySQL File Server - Samba SMTP Server - hMailServer I would recommend that we use a "Defense in Depth" strategy, having multiple layers of access protection. We need to have an IDS/IPS on both sides of our edge firewall. The inside IDS/IPS will be used as additional protection for our network and the outside IDS/IPS will serve as an early warning system from attacks. We will also use the outside IDS/IPS for additional...
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...Computer versus Apple David O’Neal COM 170 September 24, 2011 Shana Wilson Personal Computer versus Apple Personal computer and Apples have been used by people for many years. In order to choose the right computer you should understand the advantages and disadvantages of each computer. You should also determine which computer would be most effective for your daily life. Personal computers and Apples computer, Mac, were developed back in the 70’s but have made major improvements since then. Personal computers first came out back in 1971. A single board computer was invented back in 1976 that were called Apple 1. Apple 2 was introduced in 1977. Microsoft introduced Windows in 1985. In 1984 Apple introduced the Macintosh personal computer that came with Mac OS software. Mac OS X software was introduced until 2001. A year later ITunes and iOS came out. The first microprocessor was invented in 1971 by Intel. Intel is the developer of memory chips and microprocessors. The first microprocessor for Apple was released in 1976 and it was called a Motorola 6800. The first Apple 1 computer was sold for around $660 dollars. The base price for the Apple 2 was $1298.00 and rose to $2638.00. Apple 1 was just a circuit board with no case but when Apple 2 was put on the market it contained a keyboard and a power supply although it did not include a screen. In 1981, an IBM computer sold for $1565 dollars. In today’s society personal computers are cheaper than Mac computers. Mac computers...
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