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baseband
Describes a telecommunication system in which information is carried in digital form on a single unmultiplexed signal channel on the transmission medium. Definition
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band
In telecommunication, a band - sometimes called a frequency band - is a specific range of frequencies in the radio frequency (RF) spectrum, which is divided among ranges from very low frequencies (vlf) to extremely high frequencies (ehf). Definition
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attenuation-to-crosstalk ratio (ACR) or headroom
Attenuation-to-crosstalk ratio (ACR), also called headroom, is the difference, expressed as a figure in decibels (dB), between the signal attenuation produced by a wire or cable transmission medium and the near-end crosstalk (NEXT). Definition
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attenuation
Attenuation is a general term that refers to any reduction in the strength of a signal. Definition
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ADSL (Asymmetric Digital Subscriber Line)
Also see Fast Guide to DSL. ADSL (Asymmetric Digital Subscriber Line) is a technology for transmitting digital information at a high bandwidth on existing phone lines to homes and businesses. Definition
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System engineer vs. network administrator
Our Cisco certifications expert, David Minutella, answers what the responsibilities of a system engineer and network administrator are and what makes the two jobs different. Ask the Expert
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mesh network
A mesh network is a local area network (LAN) that employs one of two connection arrangements, full mesh topology or partial mesh topology. Definition
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STUN (Simple Traversal of UDP through NAT)
Simple Traversal of UDP through NAT (STUN) is a protocol that governs the exchange of data over a User Datagram Protocol (UDP) connection by communications devices operating behind a Network Address Translator (NAT) or firewall... (Continued) Definition
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Network test plan: Checklist for architecture changes
For every change you make to your network architecture, you should have a test plan and a backout plan. In this tip, learn how to build a test plan and review a sample checklist of things to include. Tip
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What good network monitoring tools are there to run on Windows servers?
Michael Gregg offers excellent resources for network monitoring tools in this Q&A. Ask the Expert
Network Management Strategies for the CIO