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  • Introduction to encryption with DES

    DES, secret-key decryption On 15 May 1973, the NBS (National Bureau of Standards, now called NIST - National Institute of Standards and Technology) published a request in the Federal Register for an encryption algorithm that would meet the ... Read more

    Cryptography
    October 16, 2008 at 09:43 AM
  • OOP - Data encapsulation

    The concept of encapsulation Encapsulation is a way of organizing data and methods into a structure by concealing the the way the object is implemented, i.e. preventing access to data by any means other than those specified. Encapsulation ... Read more

    Object-Oriented Programming
    October 16, 2008 at 09:43 AM
  • Client/Server Environment

    Introduction to Client/Server Architecture Numerous applications run in a client/server environment, this means that client computers (computers forming part of the network) contact a server, generally a very powerful computer in terms of ... Read more

    Client/Server
    October 16, 2008 at 09:43 AM
  • cmd - cmd.exe

    cmd - cmd.exe cmd.exe (cmd signifiant Windows Command Prompt) is a Windows NT/2000/XP generic process which opens a text-mode console for running programs using a command line. The process cmd is not in any way a virus, a worm, a Trojan ... Read more

    Windows processes
    October 16, 2008 at 09:43 AM
  • OOP - Inheritance

    The concept of inheritance Inheritance is specific to object-oriented programming, where a new class is created from an existing class. Inheritance (often referred to as subclasses) comes from the fact that the subclass (the newly created ... Read more

    Object-Oriented Programming
    October 16, 2008 at 09:43 AM
  • Declaring a style sheet (CSS)

    Declaring a style sheet Style sheets are not directly integrated into the W3C's HTML recommendations. For this reason, you need to include elements in the HTML code indicating both the type of document, meaning the version of the HTML and ... Read more

    CSS
    October 16, 2008 at 09:43 AM
  • RTP/RTCP protocols

    Document written by Nico VanHaute, Julien Barascud and Jean-Roland Conca Introduction: What are RTP and RTCP? The spread of computers, added to the availability of cheap audio/video computer hardware, and the availability of higher ... Read more

    Internet (protocols)
    October 16, 2008 at 09:43 AM
  • WiMAX - 802.16 - Worldwide Interoperability for Microwave Access

    What is WiMAX ? WiMAX is short for Worldwide Interoperability for Microwave Access. It is a metropolitan wireless standard created by the companies Intel and Alvarion in 2002 and ratified by the IEEE (Institute of Electrical and ... Read more

    Wimax
    October 16, 2008 at 09:43 AM
  • WPAN (Wireless Personal Area Network)

    Wireless Personal Area Networks (WPAN) A wireless personal area network (WPAN for short) is a low-range wireless network which covers an area of only a few dozen metres. This sort of network is generally used for linking peripheral devices ... Read more

    Wireless
    October 16, 2008 at 09:43 AM
  • Risks related to wireless WiFi networks (802.11 or Wi-Fi)

    Lack of security Radio waves intrinsically have the power to propagate in all directions, with a relatively wide range. Because of this, it is very difficult to keep radio broadcasts confined to a limited area. Radio propagation also ... Read more

    Wifi
    October 16, 2008 at 09:43 AM
  • Network cards

    What is a network card? What is the role of a network card? Preparing data The role of the identifier Other network card functions Sending and ... Read more

    Computer
    November 7, 2012 at 08:19 AM
  • FTP protocol (File Transfer Protocol)

    Introduction to FTP protocol FTP protocol (File Transfer Protocol) is, as its name indicates a protocol for transferring files. The implementation of FTP dates from 1971 when a file transfer system (described in RFC141) between MIT ... Read more

    Internet (protocols)
    October 16, 2008 at 09:43 AM
  • History of the hard drive

    History of the hard drive The first hard drive was invented in early 1956, at the request of the US Air Force, by the company IBM. It was called the RAMAC 305 (with the name standing for Random Access Method of Accounting and Control), a ... Read more

    Computer history
    October 16, 2008 at 09:43 AM
  • Front Office and Back Office

    Front Office/Back Office The terms Front Office and Back Office are generally used to describe the parts of the company (or of its information system) that are dedicated, respectively, to the direct relationship with the client and proper ... Read more

    e-Business
    October 16, 2008 at 09:43 AM
  • General Terms and Conditions of Use

    All Rights Reserved - 2013 - Communitic International Object These General Terms and Conditions are meant to define the ways in which the services of the website CCM.net, hereafter "The Service," are made available, as well as the ... Read more

    Terms of Use
    June 13, 2016 at 11:48 AM
  • MS DOS Files and directories

    Files in MS DOS In a computers data is stored in files. When you run a program, MS-DOS processes the data stored in the file and passes it to the system. In MS-DOS a file can be any size, however the file name is more restricted, it can ... Read more

    MS Dos
    October 16, 2008 at 09:43 AM
  • Rules for proper email use

    Netiquette Netiquette (a contraction of the words "Net" and "etiquette") refers to the set of rules governing correct behavior on the Internet, in order to respect others and be respected in turn. They serve as guidelines for civility and ... Read more

    Email
    October 16, 2008 at 09:43 AM
  • Cathode Ray Tube monitor (CRT)

    Cathode ray tube monitor Most monitors (computer screens) use cathode ray tubes (or CRT for short), which are glass vacuum tubes into which an electron gun emits a flow of electrons guided by an electrical field towards a screen covered in ... Read more

    Computer
    April 28, 2009 at 10:40 AM
  • Types of computers

    Types of computers There are several families of computers, depending on their format: Mainframes, computers which a great deal of computing power, enormous input-output capabilities and high level of reliability. Mainframes are used by ... Read more

    Computer
    November 1, 2012 at 04:13 PM
  • User management in Windows NT

    The notion of a user Windows NT is an operating system which manages sessions, meaning that when the system is started, it is necessary to log in with a user name and password. When Windows NT is installed, the administrator account is ... Read more

    Windows NT (XP,Vista,...)
    October 16, 2008 at 09:43 AM