Webopedia on Google+Webopedia on TwitterWebopedia on FacebookTech Bytes Blog
Main » TERM » T »

topology

topologies

)The shape of a local-area network (LAN) or other communications system. Topologies are either physical or logical.

There are four principal topologies used in LANs.

  • bus topology: All devices are connected to a central cable, called the bus or backbone. Bus networks are relatively inexpensive and easy to install for small networks. Ethernet systemsuse a bus topology.
  • ring topology :All devices are connected to one another in the shape of a closed loop, so that each device is connected directly to two other devices, one on either side of it. Ring topologies are relatively expensive and difficult to install, but they offer high bandwidth and can span large distances.
  • star topology: All devices are connected to a central hub. Star networks are relatively easy to install and manage, but bottlenecks can occur because all datamust pass through the hub.
  • tree topology: A tree topology combines characteristics of linear bus and star topologies. It consists of groups of star-configured workstations connected to a linear bus backbone cable.
  • These topologies can also be mixed. For example, a bus-star network consists of a high-bandwidth bus, called the backbone,which connects a collections of slower-bandwidth star segments.

    For network diagrams, see Network Topology Diagrams in the Quick Referencesection of Webopedia.







    TECH RESOURCES FROM OUR PARTNERS
    LATEST ARTICLES
    SEO Dictionary

    From keyword analysis to backlinks and Google search engine algorithm updates, our search engine optimization glossary lists 85 SEO terms you need... Read More »

    Slideshow: History of Microsoft Operating Systems

    Microsoft Windows is a family of operating systems for personal computers. In this article we look at the history of Microsoft operating... Read More »

    Slideshow: Interesting Facts About Google Search

    From Goats to Penguins, a server outage and trillions of searches, our slideshow presents interesting facts about Google and the Google.com... Read More »

    STUDY GUIDES
    Java Basics, Part 1

    Java is a high-level programming language. This guide describes the basics of Java, providing an overview of syntax, variables, data types and... Read More »

    Java Basics, Part 2

    This second Study Guide describes the basics of Java, providing an overview of operators, modifiers and control Structures. Read More »

    The 7 Layers of the OSI Model

    The Open System Interconnection (OSI) model defines a networking framework to implement protocols in seven layers. Use this handy guide to compare... Read More »