Ryan Beney's video: Cisco - CCENT CCNA R S 100-105 - DNS - Domain Name System Overview 43

Forty-Third Video in a Series covering all elements of The Cisco Certified Entry Networking Technician (CCENT) 100-105 ICND1v3 which is the first part of the CCNA certification. Blueprint Section: Infrastructure Services In this video, we start a new topic, DNS – Domain Name System. We start by understanding what is DNS, why it uses UDP and port 53 plus why the technology was invented. We then jump into reviewing how DNS changes the communication and why DNS resolution is needed to create the Layer 3 header. Thanks for Watching and be sure to like and subscribe! 📚Books! 🎓🎓 Cisco CCENT official 100-105 - Recommended books - https://amzn.to/2VlGPBi Cisco CCENT 100-105 - Recommended books - https://amzn.to/2Jgkwvw Cisco ICND2/CCNA official 200-105 - Recommended books - https://amzn.to/2HgTu3z Cisco CCENT 200-105 - Recommended books - https://amzn.to/2WDtaXW Both CCENT/CCNA books as a pair! - https://amzn.to/2HhqIzL My fav books: Routing TCP/IP Volume I (CCIE Professional Development): Authorized CCIE Preparation: v. 1 - https://amzn.to/2LEGLgx Routing TCP/IP (CCIE Professional Development): Volume 2 - https://amzn.to/2VgobuB Learn all about TCP: - https://amzn.to/2JyHY6s Another great TCP book - https://amzn.to/2EfO0ph 📚Books 🎓🎓 👍👍 Thanks for Watching 👍👍 Want to give back? ☕ Buy me a Coffee - https://www.buymeacoffee.com/VgtLD9lcK You can find me on: ✉✉ Twitter - @RyanBeney - https://twitter.com/ryanbeney Linkedin - /RyanBeney - https://uk.linkedin.com/in/ryanbeney Facebook - /RyanBeneyNetworking - https://www.facebook.com/RyanBeneyNet...