Computer Hacking Forensic Investigator (CHFI) Practice Exam 2026 - Free CHFI Practice Questions and Comprehensive Study Guide

The primary role of DNS, or Domain Name System, in networking is to translate domain names into IP addresses. This is crucial because while humans find it easier to remember and use domain names (like www.example.com), computers and networking devices use IP addresses to identify and locate each other on the network.

When you enter a domain name in a web browser, the DNS server processes this request and resolves the domain name into the corresponding IP address. This translation is essential for establishing connections between clients and servers on the internet, allowing users to access websites and services without needing to know the numeric IP addresses. This system not only simplifies the process of navigating the web but also allows for the dynamic assignment of IP addresses, further enhancing the flexibility and usability of network resources.

Other options, such as providing dedicated communication channels or encrypting data during transmission, refer to different functionalities related to networking. DNS is fundamentally about resolution - mapping user-friendly domain names to machine-friendly IP addresses, which is a cornerstone of how the internet operates.