October 2006

  • networking

    In information technology, networking is the construction, design, and use of a network.

  • physical layer

    In the Open Systems Interconnection (OSI) communications model, the physical layer supports the electrical or mechanical interface to the physical medium.

  • layer 2

    Layer 2 refers to the Data Link layer of the commonly-referenced multilayered communication model, Open Systems Interconnection (OSI).

  • Network layer

    In the Open Systems Interconnection (OSI) communications model, the Network layer knows the address of the neighboring nodes in the network, packages output with the correct network address informa...

  • Session layer (port layer)

    In the Open Systems Interconnection (OSI) communications model, the Session layer (sometimes called the "port layer") manages the setting up and taking down of the association between two communica...

  • network

    In information technology, a network is a series of points or nodes interconnected by communication paths.

  • OSI (Open Systems Interconnection)

    OSI (Open Systems Interconnection) is a standard description or "reference model" for how messages should be transmitted between any two points in a telecommunication network.

  • Local Number Portability (LNP)

    Local Number Portability (LNP) is the ability of a telephone customer in the U.S. to retain their local phone number if they switch to another local telephone service provider.

  • Differences between adapters and modems

    Our expert, Sudhanshu Gupta answers what it means when a router says the connection has been resent by the remote host and what the difference is between a WAN adapter and a modem.

  • BGP on a Cisco 805 Router

    In this Q&A, our expert, Sudhanshu Gupta answers whether or not a Cisco 805 Router supports BGP.

  • IP addressing and subnetting: What network administrators need to know

    IP addressing and subnetting are an important part of networks. Learn about how IP addresses work, subnet masks, classful vs. classless IP addresses, default gateways and more.

  • The difference between RIP, IGRP and EIGRP

    Our expert, Sudhanshu Gupta, goes over the differences between RIP, IGRP and EIGRP, in this explanation.

  • Benchmarking wireless LANs: Recommended practice

    Benchmarking has been used throughout the history of computers and networks to provide a rational, quantifiable basis for the comparison of two or more similar products or services. What the Farpoi...

  • Troubleshooting your network

    In this Q&A, our expert, Lindi Horton, helps with troubleshooting a network that has problems staying up in the evening.

  • Cisco's Information Security Specialist Certification

    Cisco dishes up an entry-level security certification that meets tough government security standards.

  • Driving campus quality of life with in-building wireless

    This case study looks at Duke University's in-building wireless deployment.

  • Link and port aggregation information

    Need some clarification on link and port aggregation? Here, our expert, Lindi Horton, provides us with just that in this Q&A.

  • 3Com rolls out unified SMB switch

    3Com hit the market today with an all-in-one unified switch for SMBs.

  • Cisco, Cognio team up on Wi-Fi interference detection

    Cisco and Cognio have partnered to troubleshoot and diagnose problems on the Wi-Fi network.

  • The most commonly used network operating system

    In this Q&A, Lindi Horton answers the question "What network operating system is more currently and commonly used?"