Full Zone Transfer is a type of Zone Transfer that transfers the entire zone file from the primary DNS server to the secondary DNS server. This type of transfer is typically used when setting up a new secondary server or during a full synchronization of zone data between servers.
Incremental Zone Transfer is a type of Zone Transfer that transfers only the changes or updates made to the zone file since the last transfer. This type of transfer is more efficient than a full transfer as it reduces the amount of data transferred between servers, saving bandwidth and time.