Dive into a comprehensive video lecture on DNS (Domain Name System) as part of a free CCNA 200-301 course. Learn about the purpose of DNS, explore Windows commands like 'ipconfig /all' and 'nslookup', analyze Wireshark captures, understand DNS caching and host files, and discover DNS configuration in Cisco IOS. Engage with hands-on demonstrations, review essential commands, and test your knowledge through multiple quizzes. Gain valuable insights into this crucial networking concept to prepare for your CCNA certification.