3.2. Explain the operation and benefits of using DHCP and DNS

Domain Name Service (DNS) resolves hostnames—specifically, Internet names, such as www.lammle.com. You don't have to use DNS; you can just type in the IP address of any device you want to communicate with. An IP address identifies hosts on a network and the Internet as well. However, DNS was designed to make our lives easier. Think about this: What would happen if you wanted to move your web page to a different service provider? The IP address would change, and no one would know what the new one was. DNS allows you to use a domain name to specify an IP address. You can change the IP address as often as you want, and no one will know the difference.

DNS is used to resolve a fully qualified ...

Get CCNA®: Cisco® Certified Network Associate: Fast Pass, Third Edition now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.