Nothing Special   »   [go: up one dir, main page]
Scribd Logo
Upload

Welcome to Scribd!

  • 416 views

    Computer Networking

    Uploaded by

    kent
    A computer network connects devices using communication channels to allow sharing of resources and communication between users. There are several types of networks including local area networks (LANs) that connect devices in a small geographic area like a home or office, metropolitan area networks (MANs) that connect LANs over a larger area like a city using high-capacity backbones, and wide area networks (WANs) that connect over long distances using various media like telephone lines. Key networking devices include routers that direct data packet traffic, hubs that connect multiple devices, and modems that modulate and demodulate signals to transmit digital data over analog systems. Wireless networks use no cables to share internet access and files between devices in a location.

    Copyright:

    © All Rights Reserved
    Download as PPTX, PDF, TXT or read online from Scribd

    Computer Networking

    Uploaded by

    kent
    416 views15 pages
    A computer network connects devices using communication channels to allow sharing of resources and communication between users. There are several types of networks including local area networks (LANs) that connect devices in a small geographic area like a home or office, metropolitan area networks (MANs) that connect LANs over a larger area like a city using high-capacity backbones, and wide area networks (WANs) that connect over long distances using various media like telephone lines. Key networking devices include routers that direct data packet traffic, hubs that connect multiple devices, and modems that modulate and demodulate signals to transmit digital data over analog systems. Wireless networks use no cables to share internet access and files between devices in a location.

    Copyright

    © © All Rights Reserved

    Available Formats

    PPTX, PDF, TXT or read online from Scribd

    Did you find this document useful?

    Is this content inappropriate?

    A computer network connects devices using communication channels to allow sharing of resources and communication between users. There are several types of networks including local area networks (LANs) that connect devices in a small geographic area like a home or office, metropolitan area networks (MANs) that connect LANs over a larger area like a city using high-capacity backbones, and wide area networks (WANs) that connect over long distances using various media like telephone lines. Key networking devices include routers that direct data packet traffic, hubs that connect multiple devices, and modems that modulate and demodulate signals to transmit digital data over analog systems. Wireless networks use no cables to share internet access and files between devices in a location.

    Copyright:

    © All Rights Reserved
    Download as PPTX, PDF, TXT or read online from Scribd
    Download as pptx, pdf, or txt
    416 views15 pages

    Computer Networking

    Uploaded by

    kent
    A computer network connects devices using communication channels to allow sharing of resources and communication between users. There are several types of networks including local area networks (LANs) that connect devices in a small geographic area like a home or office, metropolitan area networks (MANs) that connect LANs over a larger area like a city using high-capacity backbones, and wide area networks (WANs) that connect over long distances using various media like telephone lines. Key networking devices include routers that direct data packet traffic, hubs that connect multiple devices, and modems that modulate and demodulate signals to transmit digital data over analog systems. Wireless networks use no cables to share internet access and files between devices in a location.

    Copyright:

    © All Rights Reserved
    Download as PPTX, PDF, TXT or read online from Scribd
    Download as pptx, pdf, or txt
    You are on page 1of 15

    Computer Networking

    A computer network, often simply referred to as a


    network, is a collection of computers and devices
    connected by communications channels that facilitates
    communications among users and allows users to share
    resources with other users. Networks may be classified
    according to a wide variety of characteristics. This article
    provides a general overview of types and categories and
    also presents the basic components of a network.
    Types Of Networking
     A local area network (LAN) is a network that connects computers
    and devices in a limited geographical area such as home, school,
    computer laboratory, office building, or closely positioned group
    of buildings. Each computer or device on the network is a node.
    Current wired LANs are most likely to be based on Ethernet
    technology

    L.A.N
    TYPES OF NETWORKING
     A metropolitan area network (MAN) is a large
    computer network that usually spans a city or a large
    campus. A MAN usually interconnects a number of
    local area networks (LANs) using a high-capacity
    backbone technology, such as fiber-optical links, and
    provides up-link services to wide area networks and
    the Internet.

    M.A.N
    TYPES OF NETWORKING
     A wide area network (WAN) is a computer network that covers a
    large geographic area such as a city, country, or spans even
    intercontinental distances, using a communications channel that
    combines many types of media such as telephone lines, cables,
    and air waves. A WAN often uses transmission facilities provided by
    common carriers, such as telephone companies.

    W.A.N
    IP Address

     An Internet Protocol address (IP address) is a numerical label


    assigned to each device. Participating in a computer network that
    uses the Internet Protocol for communication. An IP address serves
    two principal functions: host or network
    interface identification and location addressing. Its role has been
    characterized as follows: "A name indicates what we seek. An
    address indicates where it is. A route indicates how to get there."
    Computer Server

     A server computer is a computer, or series of computers, that


    link other computers or electronic devices together. They
    often provide essential services across a network, either to
    private users inside a large organization or to public users via
    the internet. For example, when you enter a query in a search
    engine, the query is sent from your computer over the internet
    to the servers that store all the relevant web pages. The
    results are sent back by the server to your computer.

     Many servers have dedicated functionality such as web


    servers, print servers, and database servers. Enterprise
    servers are servers that are used in a business context.
    Computer HOST

     Main or controlling computer connected to other computers or terminals to


    which it provides data or computing services via a network.

     It is similar to a server in a client-server architecture. In the modern peer to


    peer networking (such as networking over the Internet) every computer is a
    peer and also a host to every other computer connected to the network.
    Computer Networking
    Devices
    Computer Networking Devices

    Computer networking devices are units that mediate data in


    a computer network. Computer networking devices are also called
    network equipment, Intermediate Systems (IS) or Interworking Unit
    (IWU). Units which are the last receiver or generate data are
    called hosts or data terminal equipment.
    Router

     A router is a device that forwards data


    packets between telecommunications networks, creating an
    overlay internetwork. A router is connected to two or more data lines from
    different networks. When data comes in on one of the lines, the router
    reads the address information in the packet to determine its ultimate
    destination. Then, using information in its routing table or routing policy, it
    directs the packet to the next network on its journey or drops the packet. A
    data packet is typically forwarded from one router to another through
    networks that constitute the internetwork until it gets to its destination
    node.
    HUB

     Hub basically acts as signal splitter, it accepts signal through its input port
    and outputs it to the output ports. Some hubs help in regenerating the
    weak signals prior to sending them to the intended output lines, whereas
    some hubs help in synchronizing the data communication (in simple words,
    the hub not only provide the mean of interface within the network, it also
    provides some additional and useful features). Sometimes multiple hubs
    are interconnected in the network. Generally hubs are used more
    commonly where star topology is used.
    Modem

     A modem is a device or program that enables a computer to


    transmit data over, for example, telephone or cable lines.
    Computer information is stored digitally, whereas information
    transmitted over telephone lines is transmitted in the form of
    analog waves.
     MODEM (Modulator/Demodulator).
    modem
     Modems are used to transmit digital information via analog
    systems. The word "modem" is derived from the term "modulator-
    demodulator." The essential functions of a modem are to
    modulate an analog carrier signal to carry digital information;
    and to demodulate a similar signal so as to decode the digital
    information from the analog carrier signal.
    Setting up your
    Wireless Network
    Wireless Network

    I.S.P.

    You can use a wireless network to share Internet access, files,


    printers, and more. Or you can use it to surf the Web while you're
    sitting on your couch or in your yard. Plus, it's easier to install than
    you think.

    You might also like