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H2ESP 10333 Harwin # 685 Houston Texas 77036.
Phone 713 776 2100

Local Area Networks 

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Yes we do install Local Area Networks.

A computer *network that spans a relatively small area. Most LANs are confined to a single building or group of buildings. However, one LAN can be connected to other LANs over any distance via telephone lines and radio waves. A system of LANs connected in this way is called a wide-area network (WAN).

Most LANs connect *workstations and personal computers. Each node (individual computer ) in a LAN has its own CPU with which it executes programs, but it also is able to access data and devices anywhere on the LAN. This means that many users can share expensive devices, such as laser printers, as well as data. Users can also use the LAN to communicate with each other, by sending e-mail.

There are many different types of LANs Ethernets being the most common for PCs. Most Apple Macintosh networks are based on Apple's network system, which is built into Macintosh computers.

The following characteristics differentiate one LAN from another:

  • topology : The geometric arrangement of devices on the network. For example, devices can be arranged in a ring or in a straight line.
  • protocols : The rules and encoding specifications for sending data. The protocols also determine whether the network uses a peer-to-peer or client/server architecture.
  • media : Devices can be connected by twisted-pair wire, coaxial cables, or fiber optic cables. Some networks do without connecting media altogether, communicating instead via radio waves.
  • LANs are capable of transmitting data at very fast rates, much faster than data can be transmitted over a telephone line; but the distances are limited, and there is also a limit on the number of computers that can be attached to a single LAN.

    *Network - group of two or more computer systems linked together. There are many types of computer networks, including:
  • local-area networks (LANs) : The computers are geographically close together (that is, in the same building).
  • wide-area networks (WANs) : The computers are farther apart and are connected by telephone lines or radio waves.
  • campus-area networks (CANs): The computers are within a limited geographic area, such as a campus or military base.
  • metropolitan-area networks MANs): A data network designed for a town or city.
  • home-area networks (HANs): A network contained within a user's home that connects a person's digital devices.
  • Networks can be broadly classified as using either a peer-to-peer or * client/server architecture.
  • Computers on a network are sometimes called nodes. Computers and devices that allocate resources for a network are called *servers.

    *System
    A group of interdependent items that interact regularly to perform a task.
     An established or organized procedure; a method.
     A computer system refers to the hardware and software components that run a computer or computers.
     An information system is a system that collects and stores data.
     On Macintoshes, System is short for System file, an essential program that runs whenever you start up a Macintosh. The System provides information to all other applications that run on a Macintosh. The System and Finder programs together make up the Mac OS.
     System often simply refers to the operating system.
    A type of computer used for engineering applications (CAD/CAM), desktop publishing, software development, and other types of applications that require a moderate amount of computing power and relatively high quality graphics capabilities.

    *Workstations generally come with a large, high-resolution graphics screen, at least 64 MB (megabytes) of RAM, built-in network support, and a graphical user interface. Most workstations also have a mass storage device such as a disk drive, but a special type of workstation, called a diskless workstation, comes without a disk drive. The most common operating systems for workstations are UNIX and Windows NT.
    Computing power, workstations lie between personal computers and minicomputers, although the line is fuzzy on both ends. High-end personal computers are equivalent to low-end workstations. And high-end workstations are equivalent to minicomputers.
    Like personal computers, most workstations are single-user computers. However, workstations are typically linked together to form a local-area network, although they can also be used as stand-alone systems.
    Networking, workstation refers to any computer connected to a local-area network. It could be a workstation or a personal computer.

    * client/server architecture  network architecture in which each computer or process on the network is either a client or a server.
    * Servers are powerful computers or processes dedicated to managing disk drives (file servers), printers (print servers), or network traffic (network servers ). Clients are PCs or workstations on which users run applications. Clients rely on servers for resources, and even processing power.

    H2Esp has provided the following networking services to our clients:

                   Local and Wide Area Network Design
             Configuration and Implementation
               Virtual Private Networks Solutions 
    Remote Access Solutions   
    Training and Documentation
     Technical Support Programs
             Optimization of existing Networks
    Security auditing and setup.

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    10333 Harwin suite 685 Houston, Texas 77036 .

    Local Area Networks