Xenix- a discontinued Unix operating system What is Xenix? Xenix is an operating system‚ which supports a computer’s basic functions. It is a discontinued version of Unix‚ a set of operating systems. Xenix was created by Bell Labs‚ which was part of the Bell System‚ and was owned by AT&T. Due to an antitrust case‚ which aimed to prevent AT&T from gaining control of the market‚ they were initially forbidden from entering the computer market. This meant that they were unable to sell Unix directly to
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what processings the system is required to carry out • Provide details of the inputs to the system • Provide details of the outputs: reports‚ forms‚ windows‚ etc. • Provide details of the data the system will held inputs processing • What is the system required to do? • Functional requirements: what the system is expected to do • Non-functional requirements: how well the system will provide the functionalities • Usability requirements: good match between the system and the users
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Most organization today are moving to client server architectures. Client server attempt to balance the processing between the client and the server by having both do some of the logic. In these networks‚ the client is responsible for the presentation logic‚ while the server is responsible for the data access logic and data storage. The application logic may reside on the client on the client or on the server‚ or it may be split between both. These are many ways in which the application logic
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* Microsoft Windows * Microsoft Windows is the most commonly used operating system in personal computers and is installed‚ distributed‚ and sold by most successful businesses in the United States. A discussion of what makes Windows the best choice for an operating system for a personal computer is included here. This discussion will examine the points why Windows is a popular operating system and compare it to other operating systems. With discussion points of memory management‚ process management
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Some Beneficial Features of the UNIX Operating System CIS 155 Some Beneficial Features of the UNIX Operating System Safety issues have always been one of the major aspects of effective operation of human beings and systems invented and implemented by individuals all over the world in different periods of human history. The rise of the personal computer in the market is another potential threat; nowadays this threat comes from the internet through computers and other devices
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Hospital Management System 2. OBJECTIVE OF THE PROJECT: This main objective of the system is to computerize the maintenance of the patient details and billing section in the hosiptal.It also includes the details about the laboratory checkups. 3. PROJECT CATEGORY: RDBMS 4. LANGUAGE AND SOFTWARE TOOL USED: Front End: Java Operating System: Windows XP Back End: SQL SERVER 2005 5. STRUCTURE OF THE PROJECT: 5.1. Proposed System:- In the proposed system‚ the administrator
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Operating systems Joseph N. Cleveland Jr. University of Phoenix Introduction to Operating Systems POS/355 John Vassar June 26‚ 2013 Memory management is an important characteristic of an operating system. Main memory is divided into two parts one for resident programs‚ and the other for the program currently in use. The user part must be subdivided to accommodate multiple processes (Stallings‚ 2012). When a few processes are in the memory then much of the time all
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spooling where the CPU overlaps the input of one job with the computation and of other jobs. ( Prefetching is a method of overlapping the I/O of a job with that job’s own computation. After a read operation completes and the job is about to start operating on the data‚ the input device is instructed to begin the next read immediately. The CPU and input device are then both busy. With luck‚ by the time that the job is ready for the next data item‚ the input device will have finished reading that data
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below‚ describe the responsibilities of the resource manager. (5M) The general form of a resource manager Figure 1 * As an Internal resource name is an internal name for the resource used by the operating system code. * As total unit are a number of resource units configured into the system. * Available unit is a number of units currently available. * List of available units is a set of available units of this resource type that are available for use by processes. * List of blocked
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Chapter 3—Security Part I: Auditing Operating Systems and Networks TRUE/FALSE 1. In a computerized environment‚ the audit trail log must be printed onto paper document. 2. Disguising message packets to look as if they came from another user and to gain access to the host’s network is called spooling. 3. A formal log-on procedure is the operating system’s last line of defense against unauthorized access. 4. Computer viruses usually spread throughout the system before being detected. 5. A worm
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