Certified Secure Software Lifecycle Professional 2025 – 400 Free Practice Questions to Pass the Exam

The Domain Name System (DNS) serves a crucial function in networking by mapping human-readable domain names to machine-readable IP addresses. This mapping provides a way for users to access websites and services on the internet using easily memorable names, rather than having to remember complex numerical IP addresses.

For instance, when you type in a web address such as "www.example.com," DNS translates this name into an IP address that computers can use to locate the corresponding server. This process is essential for the functionality of the internet, enabling efficient communication and navigation among various hosts.

While encrypting user data, providing network hardware interfaces, and facilitating user authentication are important functions within various domains of cybersecurity and networking, they do not represent the primary role of DNS. Instead, these functions address different aspects of security and network management, focusing on data protection, device connectivity, and user access management, respectively. Therefore, the primary role of DNS is accurately captured in its function of mapping domain names to IP addresses.