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CompTIA has raised the bar for Network+ candidates. The new certification exam has significant changes to the five "domains" or knowledge areas with new content related to security, cloud, data-center and operational concerns and troubleshooting. There is also a greater emphasis on wireless networking and VoIP. Use this white paper to help you gain an overview of what's new and what's different.
Building on command line skills for Linux administrators.
Fast track to RHCE certification for senior Linux system administrators
Advanced skills for the experienced Linux administrator.
Fast track to RHCSA for experienced system administrators