Certified Cloud Security Professional (CCSP) Practice Exam

The primary use of the Domain Name System (DNS) is to map friendly domain names to IP addresses. This system acts as the internet's phonebook, converting human-readable addresses like www.example.com into numerical IP addresses, which are necessary for locating and identifying computer services and devices within the network. By translating these domain names into IP addresses, DNS facilitates the efficient navigation of the internet, allowing users to access websites and services without needing to remember complex string of numbers associated with each server.

The other options relate to different aspects of networking and security but do not encapsulate the fundamental purpose of DNS. For instance, while dividing data center networks into smaller, isolated networks pertains to virtualization and segmentation, it does not directly connect to the naming and addressing function of DNS. Similarly, managing and controlling information security risks is a broader umbrella that cover various security policies and practices, rather than the specific function of DNS. Lastly, optimizing cloud deployments involves several strategies for resource management and efficiency but doesn't align with the core role of DNS in name resolution.