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  • Understanding duplex conflicts

    What is duplex, and what is the difference between half and full duplex? What is a duplex mismatch? How can auto-negotiation help or hurt your network? How can you resolve duplex conflicts? Here's some help.  Crash Course

  • network analyzer (protocol analyzer or packet analyzer)

    A network analyzer is a combination of hardware and programming, or in some cases a stand-alone hardware device, that can be installed in a computer or network to enhance protection against malicious activity... (Continued)  Definition

  • Duplex mismatch: Stop the conflicts, part 2

    Today, the majority of modern cabling supports full-duplex, and there is a significantly diminished need for half-duplex -- or at least, that is what one would like to think. In this column, Loki Jorgenson examines extenuating circumstances where hal...  Tip

  • Network visibility thwarts crime, identifies unwanted traffic

    Networking monitoring tools have helped Vanderbilt University's network team to uncover unwanted and troubling traffic. In some cases, the tools have turned the team into crime fighters.  Article

  • Finding the culprit to network delays

    In this response, Lindi Horton gives us some product options to find network delays.  Ask the Expert

  • M2M (machine-to-machine)

    M2M is an abbreviation for machine-to-machine, or technology that supports wired or wireless communication between machines.  Definition

  • ACK

    In some digital communication protocols, ACK is the name of a signal that data has been received successfully (for example, with an acceptable number of errors).  Definition

  • Jini

    Jini (pronounced "GEE-nee" like the Arabic word for "magician") is a network architecture concept that Sun Microsystems calls "spontaneous networking." Using Jini, users will be able to plug printers, storage devices, speakers or any kind of device ...  Definition

  • jam

    In an Ethernet network, a jam is a signal from one device to all other devices that a collision has occurred. Specifically, the device was trying to send a frame while another device was also trying to put a frame on the line.  Definition

  • call failure rate (CFR)

    The call failure rate (CFR) is the percentage of calls to an ISP or any network provider that fail to get through. The CFR is commonly used as a statistical measure in assessing Internet service providers.  Definition

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