What does a zone transfer in DNS allow?

What does a zone transfer in DNS allow?

• A. It allows the transfer of DNS records from one server to another
• B. It updates DNS records on the same server
• C. It resolves domain names to IP addresses
• D. It adds new zones to DNS

Answer: (A)

Zone transfer is the process of copying the zone’s DNS data from a primary DNS server to one or more secondary servers so they stay in sync. The zone contains all the records for a domain, and the secondary server pulls updates (full or incremental) to maintain an authoritative copy. This matches what the option describes: transferring DNS records from one server to another. It’s not about updating records on the same server, resolving domain names to IPs, or adding new zones—those are separate functions in DNS.

Zone transfer is the process of copying the zone’s DNS data from a primary DNS server to one or more secondary servers so they stay in sync. The zone contains all the records for a domain, and the secondary server pulls updates (full or incremental) to maintain an authoritative copy. This matches what the option describes: transferring DNS records from one server to another. It’s not about updating records on the same server, resolving domain names to IPs, or adding new zones—those are separate functions in DNS.