CompTIA Network+

Answer: B - DDNS or Dynamic Domain Name System is used to provide consistent network identification to resources that may potentially change location on the network.

Key Takeaway: DNS or Domain Name System is a service that allows for the mapping of Static or permanent IP address of devices to their associated Fully Qualified Domain Names (FQDNs). DDNS performs the same operations; however, it provides additional support for dynamically assigned IP addresses. This allows for those devices that may potentially have their IP addresses change, to maintain connectivity as the DNS records are updated automatically.