CompTIA A+ Certification Core 2 (220-1102) - Understanding DNS

The video tutorial explains the Domain Name System (DNS) and its crucial role in the Internet. It covers the transition from host files to DNS, the hierarchical structure of DNS, and how it resolves domain names to IP addresses. The tutorial also discusses DNS caching, domain registration, and the use of DNS in email authentication through technologies like DMARC, DKIM, and SPF.

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