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The rule of thumb is: practice, practice, practice. You can watch English movies. You can participate in English speaking web sites (like this one). You can listen to BBC. You can read English books. You can engage in English conversations. You can spend your vacation in English speaking countries. But practice is the most inportant … Read more
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First you need to get yourself a hosting company. I host all my web sites at www.ecorso.com There you pay a small annual fee and they provide everything you need: web space, traffic, maintained servers, backup... everything. The second step is to create the actual web site. You could learn how to program (X)HTML/CSS/PHP/JavaScript/MySQL and … Read more
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A multiprocessor system is a computer with more than one processor. If you buy yourself a modern PC with a Dual-Core or Quad-Core CPU, you already got a multiprocessor machine. They are used to distribute the computational load over several processing units (CPUs) to speed up processes. Multiprocessor machines usually share the same memory so … Read more
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It's the regular telephone system your Telecom company owns and operates. It is a public network because it connects the public (everyone can have a phone). It is a switched network because you can choose who you want to talk to (by dialing a number, the large telephone servers of your Telecom provider switch you … Read more
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Unlike class variables, instance variables are unique for each instance. Example: You have a class "bike" with the attributes "color" and "make". Whenever you instantiate that class (to create an object), these attributes are used separately in each object so you can create a "red" bike and a "blue" bike. In order to do so, … Read more
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Clusters are sets of collaborating computer systems that are usually used to guarantee high availability of services. Here's an example: You have your Oracle database and you need to make sure that this database service is available at all times (e.g. because your business depends on it). Then it would be foolish to just install … Read more
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RTF=Rich Text Format is used by many word processors regardless of their vendor. It has less features than proprietary formats but can be used on several platforms with several word processors. DOC is the proprietary document format of Microsoft Word and is - with all capabilities - only implemented in that one product. So use … Read more
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A router establishes a connection to the internet and keeps it going. Instead of typing your ISP password into your laptop and click "connect" or "dial up" every time you want to use the internet, you type the password into the router once. From that moment on your router will make sure your laptop has … Read more
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It's a slide which defines the general layout and designs of all PPT slides based upon it. e.g. if your master has a red background, all slides based on that master will have a red background, too. If you now want to take an existing presentation and change the background of all slides from red … Read more