What is the process of transferring zone data from one DNS server to another called?

What is the process of transferring zone data from one DNS server to another called?

• A. Zone Transfer
• B. SOA Update
• C. Zone Propagation
• D. Zone Migration

Answer: (A)

Zone transfer is the process of copying the data for a DNS zone from one DNS server to another. This is how a primary (master) server shares its zone data with secondary (slave) servers to keep all copies in sync, ensuring redundancy and reliability. The data transfer typically happens over TCP and can use a full transfer (AXFR) or an incremental transfer (IXFR) to update only changes. The other terms don’t describe this specific data movement between servers: propagation refers to how updates spread to resolvers over time, while updates to the SOA record are part of the zone data itself rather than a defined transfer process, and migration is a broader, less precise term.

Zone transfer is the process of copying the data for a DNS zone from one DNS server to another. This is how a primary (master) server shares its zone data with secondary (slave) servers to keep all copies in sync, ensuring redundancy and reliability. The data transfer typically happens over TCP and can use a full transfer (AXFR) or an incremental transfer (IXFR) to update only changes. The other terms don’t describe this specific data movement between servers: propagation refers to how updates spread to resolvers over time, while updates to the SOA record are part of the zone data itself rather than a defined transfer process, and migration is a broader, less precise term.