Computer security and cryptography A computer program system that is supposed to be used only by those authorized must attempt to detect and exclude the unauthorized. Access to it is therefore usually controlled by insisting on an authentication procedure to establish with some degree of confidence the identity of the user‚ thence granting those privileges as may be authorized to that identity. Common examples of access control involving authentication include: * A captcha is a means of asserting
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microcontroller 8051 security alarm based system circuits GSM based Home security system hidden cameras GSM based home security system project using microcontroller 8051. Main aim of this project is to provide sms based tracking of different locations in the home while you are not at home.This project can also be used to monior the different signals conditions of the machines in factory or industry. A GPS module will be installed in the home which will transmit the status of different doors continuously
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a simple concept which is made to order computer. The computer was to be direct sales to consumer. Dell maximized his profits by bypassing distribution and retailers. Although has product was sold by retailer he soon took product out of the stores and continue to focus on direct sales.Initialy Dell started selling computers by mail and phone order then until 1994 when he started a website to sell his computer. At this point dell became the first computer company to have a website; By 1996the website
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Contrast Mainframes and Personal Computers Overview Mainframes and personal computers have evolved over the years but their core functions have stayed the same. The mainframe is used connect multiple users for large organizations while personal computers are generally used for a single users. The more drastic changes for mainframes and personal computers have been speed and size. Mainframes use to be the size of buildings. Now they are the size of a textbook. Personal computer ’s origins came from
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Computers have taken over our lives. Computers are great things‚ and are very useful in everyday life‚ but they create a certain distraction which just overpowers our will to stay away from the computer. In our modern day world‚ computers are absolutely essential and all around us‚ at work‚ at schools‚ at malls etc. It is impossible to run away from these devices and we’ve become so dependent on it that we just can’t do things on our own now. For example‚ say you were doing some homework and
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In this booklet ‚ it will explain potential hazards in a Residential Care home for the elderly and the harm and abuse that might arise form hazards this will all be mentioned throughout the booklet . ts evident that the elderly are starting to become fragile and weak ‚ this is evident in their movement as they become moreclients. slower while they move around and they find it difficult‚ so this requires help from staff and other aid to enable them to get to one place to another . This
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Project Part 3: Identify Risk‚ Threats‚ and Vulnerabilities Some risks that I have identified are social engineering techniques due to the excessive trust given to messages coming from friends‚ contacts or followed people within the OSN(Online-Social Network) identity theft and information leaking furthermore‚ spam sending and malware distribution through Social Networks are increasing at an incredible pace. They are not the only threats. Within the World Wide Web‚ social network is becoming the
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* A personal computer (PC) is a general-purpose computer‚ whose size‚ capabilities‚ and original sale price makes it useful for individuals‚ and which is intended to be operated directly by an end-user with no intervening computer operator. * Software applications for most personal computers include‚ but are not limited to‚ word processing‚ spreadsheets‚ databases‚ Web browsers and e-mail clients‚ digital mediaplayback‚ games‚ and myriad personal productivity and special-purpose software applications
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disclosure of personal information about an individual has prevented many from using the Internet. According to a 2000 U.S. News & World Report survey‚ 86% of Internet users fear that continued use of the Web threatens their privacy. Private information‚ in the wrong hands‚ can cause a great deal of harm to the individuals concerned. There are several issues related to the Internet and privacy that raise concerns for many users. The users of the Internet should understand the ways that their personal information
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BOOTP:Bootstrap Protocol•••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••13 DCAP: Data Link Switching Client Access Protocol••••••••••••••••••••••••••••••••••••14 DHCP: Dynamic Host Configuration Protocol•••••••••••••••••••••••••••••••••••••••••••15 DNS: Domain Name System (Service) Protocol••••••••••••••••••••••••••••••••••••••••16 FTP: File Transfer Protocol••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••17 Finger: User Information Protocol••••••••••••••••••••••••••••••••••••••••••••••••••••••••••19
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