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... Passwords are the most common forms of computer and network security. They are the most common because of three main reasons. First of all, passwords are cheap to implement. Virtually all computers have a password system built into it already. Every home computer can have a password to lock out certain programs from users other than yourself. Even networked computers and systems can have an elaborate password system at a minimal cost to the company. Passwords are also fast. When a computer prompts you for a user identification and password, you simply type it in and away you go. There is usually very little else that needs to be done. The third benefit to passwords are that ...
... V, and so on. You, or anyone else who knows the key can easily switch the H back to a D, the V back to an R, and figure out where to meet. Theses two examples are on opposite sides of the spectrum, but both have their similarities and their differences. The major difference complexity, the government pays mathematicians to research complex algorithms by which to encode the messages, like the system used by Captain Video but these algorithms are complex enough that if you tried to crack them it would take you decades with even the most powerful computer today. This complex mathematical code is what makes the text secure to anyone who tries to crack it. Some similarities we can find ...
... of the source, probably the most important criterion one must use in evaluating the effectiveness of a website, is sometimes debatable. The author of a website can be anyone. It can be ones next door neighbour, someone whom was met last week at a bar or a world renowned open heart surgeon who was on television just three days ago. Before beginning to delve into a site, make sure that authorship meets one of two sub-criterion: if reviewing a site in ones own general area of expertise, be certain that the author is a trusted and well recognized name in the field; or, if visiting a site by an author one is unfamiliar with, make sure that there is either bibliographic information a ...
... include freight trains and passenger trains. Freight trains are used to transport goods and materials between cities while passenger trains are used to transport people. Although freight trains are still used all across the nation, rail intercity freight has accounted for a decreasing share of the total ton mileage over the past 30 years. This is mostly due to the increase in truck transport. Rail passenger traffic had also declined over the years until better service was offered by Amtrak and the price of fuel increased. Much of the decline in rail passenger traffic has been due to the increasing number of air passengers. Air transport can also be divided into the subsyst ...
... Per Second) the reason for the increase in 14.4 and 28.8’s is that they are cheap and fairly recent and haven’t gone out of date yet. There are two types of modem external and external internal plugs into a 16 bit port inside your computer and external connects through either a serial (mouse)port or a parallel (printer)port most people like the external because they don’t take up an extra space in your computer (according to PC Computing) prices in range price from $100 (28.8bps) to $500(software upgradable 56k). Facsimile machines also have a form of modem in them, usually a 2400baud modem to decode the message. So imagine a world without the modem for a second; NO fax NO Internet ...
... armor. The function of steel or hard plastic armor is to be impervious to a bullet. The function of ceramic armor is to slow the bullet abruptly by the hardness of the ceramic and to dissipate the bullet's energy as it destroys the armor at the point of impact; the tiles or plates of ceramic bulletproof vest thus have to be replaced once they have stopped a bullet. The textile vest deforms the bullet and then dissipates its energy, entangling it in the vest's many layers. A textile bulletproof vest is fashioned of sixteen to twenty-four layers of nylon cloth of a heavy weave, the layers stitched together like quilt. Any ordinary pistol or sub-machine gun bullet striking ...
... is the individual patient who must make a decision about whether to keep himself alive. "What is the point of prolonging a person's biological life if it is obtained at the cost of a serious assault on that person's liberty?" There is probably no simple answer for this question. Any patient's decision should be respected, not based on the fact of all available technologies. This medical technology has the potential for both good and bad results. However, it is very important in today's society. "Insurance in the Genes" is a piece of valuable material which explores another area in the technological field. Nowadays, genetic engineering essentially plays an important role. Genetic testing c ...
... and robots are in the main stream of this tidal wave. In the movie, Terminator, robots take over the world in their future. Are movies like these foretelling the future of mankind? Some Swiss scientists say that the end may be close (Kelly 1). An autonomous robot that learns from its environment sparked all of this "Armageddon" talk (Kelly 1). The robot learned not to bump into a barrier without any programming of that sort. This may not seem like a big deal, but this is a major breakthrough in this area. Scientist believe that in ten years the technology will be more advanced and the robots will be as clever as humans are (Kelly 1). Soon as man-made creations can become more intell ...
... of PC users are not experienced programmers. A few months later, in the fall of the same year, two men came in the editor's office of the magazine and claimed that they have found a computer virus. Careful examination showed that it was the VIENNA virus. At that time the computer virus was a completely new idea for us. To make a computer program, whose performance resembles a live being, is able to replicate and to move from computer to computer even against the will of the user, seemed extremely exciting. The fact that "it can be done" and that even "it had been done" spread in our country like wildfire. Soon hackers obtained a copy of the virus and began to hack it. It was notic ...
... that define and constrain how users can interact with them," (Holmes & Dishman, 1994, p. 6). Having been created in their most rudimentary form nearly two decades ago, the technology that supports MUD interaction is well developed and has spawned a new variety of communicative environment, one that thousands if not millions of users have found fiercely compelling. Since MUDs are generally restricted to text-based interaction (some support ANSI codes, and the graphical MUDs are gaining popularity), one might expect that the interactions therein are characterized by a lack of regulating feedback, dramaturgical weakness, few status cues, and social anonymity, as Kiesler and her colleagues ha ...
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