From the course: Cisco Certified Network Associate (CCNA) v1.1 (200-301) Cert Prep

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Domain Name System (DNS)

Domain Name System (DNS)

From the course: Cisco Certified Network Associate (CCNA) v1.1 (200-301) Cert Prep

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Domain Name System (DNS)

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(gentle music) - [Instructor] I don't know about you, but for me, it's a lot easier to remember the name of a destination on the internet as opposed to the IP address of a destination on the internet. For example, if I want to go to my website, kwtrain.com, I don't know what the IP address is, but routers need to know that. They route based on IP address information, not based on names. So we've got to have some translator that sits in the middle that says, "Oh, the IP address corresponding to kwtrain.com or wherever you're going, is this IP address." In this example, the desktop computer wants to go to the web server, and we're going to pretend that the web server is at kwtrain.com, and the desktop computer does not know that the web server's IP address is 203.0.113.100. It just knows that it wants to go to kwtrain.com, but it does know the IP address of a DNS server. It knows that there is a DNS server available at 192.0.2.10. How does it know that? Maybe we manually configured that…

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