N10-005 · Question #806
Dynamic DNS provides which of the following services?
The correct answer is A. Automatic registration of host records. Dynamic DNS (DDNS) allows hosts with dynamically assigned IP addresses to automatically update their DNS records, effectively providing automatic registration of host records. This ensures the hostname always resolves to the current IP address.
Question
Dynamic DNS provides which of the following services?
Options
- AAutomatic registration of host records
- BTranslates public host names to private host names
- CProvides round robin load balancing for web servers
- DProvides aliases for additional search suffixes
How the community answered
(38 responses)- A89% (34)
- B3% (1)
- C5% (2)
- D3% (1)
Why each option
Dynamic DNS (DDNS) allows hosts with dynamically assigned IP addresses to automatically update their DNS records, effectively providing automatic registration of host records. This ensures the hostname always resolves to the current IP address.
Dynamic DNS enables clients or DHCP servers to automatically register and update A (and PTR) records in DNS whenever an IP address changes or is newly assigned. This is essential in environments where hosts receive dynamic IPs via DHCP, as it keeps name-to-IP mappings current without manual administrator intervention.
DNS translates hostnames to IP addresses, but Dynamic DNS does not perform public-to-private hostname translation; that function is associated with split-horizon DNS or NAT-based solutions.
Round-robin load balancing distributes queries across multiple A records for the same hostname and is a standard DNS feature unrelated to Dynamic DNS updates.
DNS search suffixes are configured in the client resolver settings or via DHCP option 119 to append domain names to unqualified queries, which is not a function of Dynamic DNS.
Concept tested: Dynamic DNS automatic host record registration
Source: https://learn.microsoft.com/en-us/windows-server/networking/dns/what-s-new-in-dns-server#dynamic-dns-updates
Topics
Community Discussion
No community discussion yet for this question.