CompTIA Network+ Practice Test

Resource Records (RR) in the Domain Name System (DNS) contain essential data that link domain names to various types of resource information. They serve as the fundamental building blocks of the DNS, providing data about domains and how these domains are related to specific resources on the internet. This includes information such as IP addresses associated with a domain, mail server addresses, and more. For example, an A record maps a domain name to an IP address, while a MX record specifies mail exchange servers for email routing.

The other options do not accurately reflect the information contained within Resource Records. Detailed logs of user activity pertain to monitoring or auditing services, not DNS records. Network protocols are defined and managed through configurations that are independent of specific DNS records. Encryption keys are part of security protocols and are also not something that DNS Resource Records would contain. Thus, the focus of Resource Records is squarely on mapping domain names to their corresponding resource data.