Search
All categories
Results 61 - 80 of about 757
  • 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
  • ISP - Internet service providers

    What does ISP mean? ISP literally means Internet service provider or provider. It is a service (most of the time paid for) which allows you to connect to the Internet. Why use an ISP? Unless you have a specialized line (other than a ... Read more

    Internet Utilities
    October 16, 2008 at 09:43 AM
  • Intranet and Extranet

    Intranet An intranet is a set of Internet services (for example a web server) inside a local network, i.e. only accessible from workstations of a local network, or rather a set of well-defined networks that are invisible (or inaccessible) ... Read more

    e-Business
    October 16, 2008 at 09:43 AM
  • Graphics cards - Video cards

    2D Accelerator Cards A graphics card, sometimes called a graphics adapter, video card or graphics accelerator, is a computer component which converts digital data into a graphical form which can be displayed on a monitor. The initial role ... Read more

    Computer
    October 16, 2008 at 09:43 AM
  • Computer - Introduction to Memory

    The Role of Memory The term "memory" applies to any electronic component capable of temporarily storing data. There are two main categories of memories: internal memory that temporarily memorises data while programs are running. Internal ... Read more

    Computer
    November 1, 2012 at 04:15 PM
  • Formatting - Formatting a hard drive

    Before trying to understand formatting, you first need to understand how a hard drive works. Many people do not distinguish low-level formatting (also called physical formatting) from high-level formatting (also called logical formatting). ... Read more

    Computer: maintenance
    October 16, 2008 at 09:43 AM
  • ccmexec - ccmexec.exe

    ccmexec - ccmexec.exe The process ccmexec.exe (Microsoft SMS Agent Host ) is part of the Microsoft SMS (Systems Management Server) suite, which is mainly used to distribute software patches to the machines on a network. The file that ... Read more

    Windows processes
    October 16, 2008 at 09:43 AM
  • Processor

    Introduction Operation Instructions Registers Cache Memory Control Signals Functional Units Transistor Integrated Circuits Families Instruction Set CISC ... Read more

    Computer
    August 21, 2013 at 12:56 AM
  • Substitution cipher

    Substitution cipher Substitution cipher involves replacing one or more entities (generally letters) in a message with one or more other entities. There are several types of substitution cryptosystems: Monoalphabetic substitution involves ... Read more

    Cryptography
    October 16, 2008 at 09:43 AM
  • Network equipment - Bridges

    Bridges A bridge is a hardware device for linking two networks that work with the same protocol. Unlike a repeater, which works at the physical level, a bridge works at the logical level (on layer 2 in the OSI model), which means that it ... Read more

    Local Area Network
    October 16, 2008 at 09:43 AM
  • 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
  • Multichannel audio (5.1, 6.1, 7.1)

    Multichannel audio The term "multichannel audio" refers to the use of multiple audio tracks to reconstruct sound on a multi-speaker sound system. Two digits separated by a decimal point (2.1, 5.1, 6.1, 7.1, etc.) are used to classify the ... Read more

    Audio
    October 16, 2008 at 09:43 AM
  • Routing over the Internet

    Routers Routers are devices which make it possible to "choose" the path that datagrams will take to arrive at the destination. They are machines with several network interface cards each one of which is linked to a different network. So, ... Read more

    Internet (protocols)
    May 24, 2012 at 03:36 PM
  • Data tampering attacks

    Most web application attacks involving soliciting a website with manually entered data to generate an unexpected context. Web application parameters The HTTP protocol, a communication protocol on the web, makes it possible to convey ... Read more

    Attacks
    October 16, 2008 at 09:43 AM
  • Motherboard

    Introduction to motherboards Characteristics Motherboard form factor Integrated components The chipset The CMOS clock and battery The BIOS The processor ... Read more

    Computer
    November 12, 2012 at 12:49 PM
  • Spreadsheets - Data Entry

    Cell Content A cell of a worksheet can contain a value or be empty. The value of a cell has two essential characteristics: a type, which means the intrinsic type of the data. There are generally three types of values: numeric values, for ... Read more

    Spreadsheet
    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 1 ... Read more

    Wireless
    October 16, 2008 at 09:43 AM
  • ISO 9000, ISO 9001 and ISO 9004

    Introduction to ISO Certification Certification is a way to attest, by the intermediary of a third-party certifier, to a company's ability to provide a service, product or system in accordance with client requirements and regulation ... Read more

    Quality
    October 16, 2008 at 09:43 AM
  • Spreadsheets - Worksheets

    The Concept of a Worksheet Spreadsheets display data and formulas in a table form (lines and columns) called a worksheet. A worksheet is made of lines (numbered with numbers) and of columns (numbered with letters). The intersection of a ... Read more

    Spreadsheet
    October 16, 2008 at 09:43 AM
  • Data transmission - Analogue transmission

    The principles of analogue transmission Analogue data transmission consists of sending information over a physical transmission medium in the form of a wave. Data is transmitted via a carrier wave, a simple wave whose only purpose is to ... Read more

    Data transmission
    October 16, 2008 at 09:43 AM