New Training: Wired Connectivity and Performance Issues
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New Training: Wired Connectivity and Performance Issues

In this 9-video skill, CBT Nuggets trainer Anthony Sequeira teaches you how to troubleshoot common wired connectivity and performance issues. Watch this new networking training.

Watch the full course: CompTIA Network+

This training includes:

  • 9 videos
  • 47 minutes of training

You’ll learn these topics in this skill:

  • Wired Connectivity & Performance Issues: Attenuation, Latency, and Jitter
  • Wired Connectivity & Performance Issues: Crosstalk, EMI, Open/Short
  • Wired Connectivity & Performance Issues: Incorrect Pin-Outs or Cable Types
  • Wired Connectivity & Performance Issues: Mismatched and Damaged Cables
  • Wired Connectivity & Performance Issues: Bad Ports and LED Status Indicators
  • Wired Connectivity & Performance Issues: Duplex and Speed Mismatches
  • Wired Connectivity & Performance Issues: VLAN Mismatches
  • Wired Connectivity & Performance Issues: Native VLAN Mismatches
  • Wired Connectivity & Performance Issues: Bottlenecks

Attenuation Isn’t Just a Wireless Problem

Imagine dropping a big rock into the center of a quiet, totally still pond: the waves would easily reach shore. But now imagine dropping a small rock into a lake filled with floating logs, sticks and leaves: the waves would weaken as they pushed through the stuff in the way and probably wouldn’t reach shore.

That’s what attenuation is — the weakening of a radio signal. The signal can be weakened by objects it has to work around, the thickness of the atmosphere, or other signals. It’s easy to imagine how this would affect Wi-Fi broadcasts or wireless transmissions. But attenuation is also a problem that has to be solved for wired and cabled networks.

Attenuation in cabled networks can be caused by power cables, radio wave interference or electric currents. When a cabled signal experiences attenuation, the signal strength can deteriorate and the signal transmission can be lost altogether.

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Ultimate Networking Cert Guide

A 97-page guide to every Cisco, Juniper, F5, and NetApp certification, and how they fit into your career.

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