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  • Creating an RJ45 crossover cable

    What's an RJ45 plug? A network card may have several types of connectors, with the most common being: An RJ45 connector; A BNC connector (coaxial cable). The RJ-45 is the one which interests us here, as it it the most widely used. The... Read more

    Cables and connectors
    October 16, 2008 at 09:43 AM
  • HTML document layout

    HTML document An HTML page is a simple file containing text formatted with HTML tags. Traditionally, the file is given an .htm or .html extension, but a web page may have other extensions as well. A web page can be built from even the... Read more

    HTML
    October 16, 2008 at 09:43 AM
  • Operating system

    Description of the operating system Roles of the operating system Components of the operating system Multi-threaded systems Multi-processor systems Embedded systems Real time systems Types of operating system Description of the... Read more

    Operating System
    March 15, 2018 at 03:48 PM
  • Modem

    A quick history of the modem The first coding to enable long distance communication was Morse, which was developed by Samuel F.B Morse in 1844. This code is made up of dots and dashes (a sort of binary language...) and made it possible... Read more

    Internet Technologies
    October 16, 2008 at 09:43 AM
  • Introduction to Microsoft Windows

    History of Windows Windows is the operating system sold by the Seattle-based company Microsoft. Microsoft, originally christened "Traf-O-Data" in 1972, was renamed "Micro-soft" in November 1975, then "Microsoft" on November 26, 1976.... Read more

    Windows
    March 8, 2018 at 09:54 AM
  • OOP - Polymorphism

    Definition of polymorphism The word polymorphism comes from Greek and means having several different forms. This is one of the essential concepts of object-oriented programming. Where inheritance is related to classes and (their... Read more

    Object-Oriented Programming
    October 16, 2008 at 09:43 AM
  • Wireless Metropolitan Area Networks

    Wireless Metropolitan Area Networks (WMAN) A Wireless Metropolitan Area Network (WMAN) is also known as a Wireless Local Loop (WLL). WMANs are based on the IEEE 802.16 standard. Wireless local loop can reach effective transfer speeds of... Read more

    Wireless
    October 16, 2008 at 09:43 AM
  • Agile Methods (RAD, XP)

    Agile methods "Agile methods" software development (also called Agile Modelling denoted AG for short) reduce software lifecycle time (thus speeding up development) by firstly developing a prototype version, then integrating... Read more

    Software engineering
    October 16, 2008 at 09:43 AM
  • The Scanner

    The Scanner A scanner is an acquisition peripheral for scanning documents, i.e. converting a paper document to a digital image. There are generally three types of scanner: Flat scanners let you scan a document by placing it flat against... Read more

    Computer
    October 16, 2008 at 09:43 AM
  • Leased lines (T1, T2, T3)

    Leased lines "Leased" lines enable transmission of data at medium and high speeds (64 Kbps to 140 Mbps) by point to point or multipoint connection (Transfix service). In Europe, there are five types of lines distinguished according to... Read more

    Internet Technologies
    October 16, 2008 at 09:43 AM
  • Programming Languages

    A programming language is a language designed to describe a set of consecutive actions to be executed by a computer. A programming language is, therefore, a practical way for us humans to give instructions to a computer. Languages that... Read more

    Programming
    June 19, 2018 at 06:40 PM
  • Computer screen or monitor

    Introduction to computer monitors A monitor (or screen) is a computer display unit. There are generally said to be two families of monitors: Cathode-ray tube monitors (or CRT for short), which are used with most desktop computers. They... Read more

    Computer
    November 1, 2012 at 04:17 PM
  • Introduction to Trojan horses

    Trojan horses A Trojan horse is a computer program which carries out malicious operations without the user's knowledge. The name "Trojan horse" comes from a legend told in the Iliad (by the writer Homer) about the siege of the city of... Read more

    Viruses and threats
    July 25, 2012 at 11:39 AM
  • Introduction to Wi-Fi (802.11 or WiFi)

    Introduction to Wi-Fi (802.11) The IEEE 802.11 specification (ISO/IEC 8802-11) is an international standard describing the characteristics of a wireless local area network (WLAN). The name Wi-Fi (short for "Wireless Fidelity", sometimes... Read more

    Wifi
    October 16, 2008 at 09:43 AM
  • Computer - ISA, MCA and VLB Buses

    Expansion Bus Expansion buses (sometimes called peripheral buses) are buses that have connectors that allow you to add expansion cards (peripherals) to a computer. There are different types of standard internal buses that are... Read more

    Computer
    October 16, 2008 at 09:43 AM
  • Environment variables

    Environment variables An environment variable is a dynamic value loaded into the memory that can be used by several processes operating simultaneously. On most operating systems, the location of some libraries or of the main system... Read more

    Operating System
    October 16, 2008 at 09:43 AM
  • Using Telnet

    Introduction to Telnet Protocols and implementation Running Telnet Commands in Telnet Introduction to Telnet Telnet is a protocol for emulating a remote terminal, which means that it can be used to run commands entered on a keyboard at... Read more

    Internet Utilities
    November 12, 2012 at 12:39 PM
  • Information security officer (ISO)

    Information security officer (ISO) An ISO (information security officer) is in charge of setting and a company's security policy. He/she also plays a critical role in informing, advising, and alerting the general management on matters... Read more

    IT professions
    October 16, 2008 at 09:43 AM
  • CD, CD audio and CD-ROM

    The Compact Disc was invented by Sony and Philips in 1981 in order to serve as a high-quality compact audio storage device which allowed for direct access to digital sound tracks. It was officially launched in October 1982. In 1984, the... Read more

    Computer
    October 7, 2012 at 02:35 PM
  • FAT16 and FAT32

    The FAT16 file system The first file system to be used on a Microsoft operating system was the FAT system, which uses a file allocation table. The file allocation table is actually an index which lists the content of the disk in order... Read more

    Computer: maintenance
    October 16, 2008 at 09:43 AM