Discover the core of the internet with our "Mastering DNS" course, meticulously crafted to provide you with a thorough understanding of the Domain Name System (DNS). This course caters to IT professionals, network engineers, and beginners eager to delve deep into how DNS operates. You'll embark on a journey through the essentials of DNS, exploring its history, domains, delegation, zones, and name servers. Gain practical knowledge on managing DNS resource records such as A, AAAA, MX, and more, equipping you to configure and troubleshoot network settings with confidence. Our expert-led tutorials cover both fundamental and advanced DNS topics, including dynamic updates, sender policy frameworks, and essential query tools like nslookup and dig. As you progress, you'll enhance not only your technical skills but also your career opportunities in IT and network management. Ideal for those looking to expand their technical acumen, this course offers insights from industry experts sure to make you proficient in DNS. Join today and elevate your understanding of one of the internet's most vital systems, paving the way for a successful tech career! *Chapters and Timestamps:* 00:00 - What You Should Expect From This Video 01:08 - A Brief History Of The Domain Name System *2. How Does DNS Work?* 05:19 - What Is The Domain Name System? 09:08 - Domains, Delegation And Zones 12:14 - The Internet Namespace 16:31 - Internationalized Domain Names 18:38 - Name Servers, Zones And Authority 20:04 - Resolvers 21:53 - Resolution And Recursion 26:15 - Queries And Responses 29:02 - Caching 31:25 - Server Selection And Retransmission *3. Name Servers* 33:15 - Authoritative, Recursive And Caching Name Servers 35:30 - Primaries And Secondaries 38:39 - Forwarding And Forwarders 41:12 - Makes And Models - BIND, The Windows DNS Server, And More *4. Resource Records* 43:28 - Resource Records 46:52 - DNS Record break 47:07 - The A Record 48:16 - The AAAA Record 49:30 - The PTR Record 52:54 - The CNAME Record 54:38 - The MX Record 56:51 - The SRV Record 59:36 - The TXT Record 01:00:34 - Infrastructure Records 01:08:18 - Wildcards 01:10:37 - RRset Order 01:12:01 - Tracing Resolution With dig *5. Stub Resolver Configuration And Operation* 01:16:59 - Timeouts And Retransmissions 01:21:12 - Default Domains And Search Lists *6. Advanced Topics* 01:24:45 - Dynamic Update 01:30:42 - NOTIFY 01:33:43 - IXFR 01:34:51 - Sender Policy Framework *7. Query Tools* 01:38:14 - nslookup 01:46:57 - DNS Record break 01:47:07 - dig *8. Wrap-Up* 01:55:56 - Final Words Show your Love & Support: ☕️ [Buy me a coffee!] ( ) Would Help me make more content like this one :) ``` If you are involved in ANY form of online collaboration, then have I got the all-in-one solution for you! Try it here *(it's completely free)* - 🌟*Join Our Brainers Community! *🌟 Are you passionate about learning, tech, and courses? Join us at Discord to dive into a vibrant community where enthusiasts like you come together to share knowledge, resources, and inspiration. 🚀 🧠*Telegram*: +pIXV6rmfKbU5YmRk ✨ *WhatsApp Channel:* 🔥*Discord Channel:* 💎**YouTube Channel:* @alphabrainscourses