Engineering Concepts Tutorials

Engineering Concepts Tutorials for UML, Operations Research, Numerical Methods and many more.
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In mathematical numeral systems, the base or radix is usually the number of various unique digits, including zero, that a positional numeral system uses to represent numbers. For example, the decimal system, the most common system in use today, uses base ten, hence the maximum number a single digit...
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Cyclomatic Complexity its a type of white box testing for Structural testing use under reference of code complexity. Facts about why White Box Testing? Most programe coding represents what the program actually dose and not what intended to do. It minimizes delay between defect injection...
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The article continues the discussion on Algorithms available in Symmetric Key cryptography. It explains the whereabouts of DES algorithm. Due to the limitations of DES on security context, we shall include Triple DES in the scope. Triple DES is a stronger form of DES algorithm. Understanding...
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The Component Object Model (COM) is a softwarearchitecture that allows applications to be built frombinary software components. COM is the underlyingarchitecture that forms the foundation forhigher-level software services, like those provided byOLE. OLE services span various aspects of...
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A set of processes is deadlocked if each process in the set is waiting for an event that can be caused by another process in the set. The events that we are mainly concerned with are resource acquisition and release. The resources may be physical resources (CPU, I/O devices, memory) or logical...
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DoS Attack DoS stand for denial-of-service attack, a type of attack on a network that is designed to bring the network to its knees by flooding it with useless traffic. DDoS Attack DDoS stands for Distributed Denial of Service. It is an attack where multiple...
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Continuation from Denail of Service (DoS) by Pradeep. Have you ever tried to make a telephone call but couldn't because all the telephone circuits were busy? In fact, in India, telephone companies used to air commercials on television and radio that suggested you avoid peak calling times by...
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Instead of defining what is design pattern lets define what we mean by design and what we mean by pattern. According to me design is blue print or sketch of something so it can be defined as creation of something in mind. Moving to pattern, we can define it as guideline, or something that repeats....
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Adware Adware is any computer program or software package in which advertisements or other marketing material are included with or automatically loaded by the software and displayed or played back after installation. The justification for adware is that it helps recover programming...
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Routing and switching can be two terms that are difficult to differentiate, so here is a simple explanation that may help to clarify things. First of all switching and routing are not the same thing. Switching involves moving packets between devices on the same network. Conversely, routing involves...
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In this article, we will learn about the available formats of Digital certificate, their purpose and some of the technical commands used for requesting and issuing the certificates. We shall use OpenSSL, which is an open source toolkit for performing cryptographic operations Common...
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Digital certificates are files which are used to prove the authenticity of the user or computer to whom it is issued. It is very similar to an identification proof like passport, driving license or PAN, which gives assurance to the other party that the transaction of information from the...
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Are You Invisible Online? It's true that your IP address is no secret. It's a basic part of internet communication protocols to send your IP address whenever you connect to another site, request a web page, chat, play an online game, etc. Without your IP address, the computer on the other...
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SSL (Secure Sockets Layer) certificates are perhaps the most common way to protect information being transmitted between a visitor Web browser and your Web site. SSL provides encryption services to information flowing between systems and can protect Web traffic, e-mail, instant messages and a host...
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Memcached is a free & open-source, robust, fast & distributed memory object caching system. Memcached was originally developed by Brad Fitzpatrick for LiveJournal in 2003. Since then it has gone a long way and today top websites like Youtube, Facebook & Twitter use memcached. Memcached works on...
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Introduction The Transmission Control Protocol / Internet Protocol (TCP/IP) is a nonproprietary, routable network protocol suite that enables computers to communicate over all types of networks. TCP/IP is the native protocol of the Internet and is required for Internet Connectivity. The...
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I have tried introducing people to Git VCS, both personally and through by articles at G4E, I have written 2 articles, Introduction to Git VCS & Git VCS - Cloning & Workflow, in this article Get A List Of Files Modified Between Two Commits At times working on a feature or an enhancement of an...
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After Introduction to Git VCS, this is the second installment in the series, here we'll be see how to setup a workflow, copying repositories & maintaining a central repository to help developers/contributors collaborate. Cloning In most of the other version control systems, checking out is a...
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So, what is a cipher anyway? A cipher is an algorithm or set of algorithms that systematically convert a sender's intended message text to what appears to be meaningless text, which can be converted back to the sender's original message only by authorized recipients. The following terms and...
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Introduction A VLAN is a grouping of computers that is logically segmented by functions, project teams, or applications without regard to the physical location of users. For example, several end stations might be grouped as a department, such as Engineering or Accounting, having the same...
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