November 2006

  • 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...06 Nov 2006

  • attenuation

    Attenuation is a general term that refers to any reduction in the strength of a signal.06 Nov 2006

  • 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.06 Nov 2006

  • How can you update your certifications on the job?

    In this response, our Cisco certifications expert, David Minutella, answers how one might obtain a certification on the job.06 Nov 2006

  • OSI: Securing the Stack, Layer 3 -- The role of ICMP

    Michael Gregg examines the security vulnerabilities of Internet Control Message Protocol (ICMP) and how to help secure OSI Layer 3, the network layer.06 Nov 2006

  • Self-study course material for CCVP certification

    Our Cisco certification expert recommends these course self-study materials for Cisco Certified Voice Professional (CCVP) exams. Use these resources and books to pass your test if you can't afford ...06 Nov 2006

  • 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.06 Nov 2006

  • CCNA Video Mentor

    Cisco's CCNA Video Mentor provides you with more than two hours of personal visual instruction from best-selling author and instructor Wendell Odom to help you prepare for the CCNA certification ex...06 Nov 2006

  • NAC underneath the covers: Endpoint health assessments

    The main focus of NAC these days is to assess and endpoint and determine that it's "healthy" before it's allowed network access. But vendors have different methods of doing so. Here you'll find the...06 Nov 2006

  • 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.03 Nov 2006

  • Network access control: Should you implement now?

    Implementing network access control (NAC) is a big step, and deciding whether and when to start is daunting. Networking experts say the sooner the better, but before going into NAC full throttle, e...03 Nov 2006

  • WLAN management

    This special report from SearchNetworking.com offers managing and monitoring techniques that can help you gain control over your company's wireless devices and users.01 Nov 2006

  • four-way server

    A four-way server is a server that incorporates a multi-core processor for increased performance... (Continued)31 Oct 2006