Top 5 ccna open source projects

Cisco Press CCNA Cyber Ops Books and Video Courses supplemental information and additional study materials.

Various pyATS-based Test Automation Scripts

A Cisco Cheatsheet: Commands and Snippets for bootstrapping, boilerplate, configuration, and hardening of Cisco routers and switches.

A summary of CCNA-useable cisco commands by @elsmr and @Haroenv

CCIE routing and switching notes and references, with a general directory and specific topic directories.