Switches get deployed in a host of harsh environments, especially when the system is designed for military applications. Proper design can eliminate hostile exposure, down time, and repair expenses, while providing a reliable life expectancy.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies.
You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived.
So if you can't attend live, attend at your convenience.