Posted by admin on Jul - 31 - 2011 -
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The new users for the minicomputer were scientists and engineers who had sufficient computer expertise to program, operate, and manage computers on their own for uses such as scientific computation, laboratory data acquisition, industrial process control, or computer research.
Posted by admin on Jul - 27 - 2011 -
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While IBM and the other mainframe vendors were mainly building big computers for large corporations, several new companies focused on building new, smaller computers—dubbed minicomputers—beginning in the early 1960s.
Posted by admin on Jul - 23 - 2011 -
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WLANs, especially unsecured WLANs, can introduce the possibility of challenges to data authenticity and the “some hacker did it” defense. These challenges are not always unfounded. It is common for a hacker to compromise a server to provide public access to stolen software, referred to as “WAREZ,” and pornography.
Posted by admin on Jul - 19 - 2011 -
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Wireless networks were originally thought to be best suited for isolated situations in which users needed temporary and backup connectionsor to extend networks and provide people on the move such as doctors and nurses with connectivity.
Posted by admin on Jul - 15 - 2011 -
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Twisted-pair is generally good only for a maximum segment length of 100 meters (328 feet). Sometimes investigators will hear twisted-pair referred to by its EIA/TIA rating, such as CAT 5 for category 5.
Posted by admin on Jul - 11 - 2011 -
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Each networking topology can use different types of cabling. Although other factors can contribute to the selection, the type of cabling utilized in a given topology is usually based on the required communications speed and range between stations. Bus topologies use coaxial cable, commonly referred to as thinnet or thicknet.
Posted by admin on Jul - 7 - 2011 -
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A star topology is one of the most common topologies in use today. In a star topology, rather than all computers being connected to each other, all computers and network devices, such as network printers and firewalls, are connected to a centralized hub or switch.