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The 2021 revised and updated version CISSP (Certified Information System Security Practitioner) certification exam will be released on May 1, 2021. This new version of the popular CISSP exam will include a modest revision and re-organization of previously included topics, but will integrate a significant number of new topics.

The key difference between hubs, switches and bridges is that hubs operate at Layer 1 of the OSI model, while bridges and switches work with MAC addresses at Layer 2 of the OSI model.

To help you stay ahead of the game, here are ten IT skills that are on the brink of extinction.

If you want to stay relevant as an IT professional, you have two choices: evolve your current skills or make a big change.

The process of learning how to subnet IP addresses begins with understanding binary numbers and decimal conversions along with the basic structure of IPv4 addresses. This paper focuses on the mathematics of binary numbering and IP address structure.