What is the process called when a DNS server copies its zone file to another DNS server?

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Study for the Network Security Instructional Terminology Test. Enhance your knowledge with multiple choice questions, each accompanied by hints and explanations. Ensure readiness for your exam!

Multiple Choice

What is the process called when a DNS server copies its zone file to another DNS server?

Explanation:
In DNS, the process of moving a zone’s data from a primary server to one or more secondary servers is called a zone transfer. This mechanism keeps all servers authoritative for a zone in sync. The primary holds the master copy, and secondary servers check the zone’s serial number in the SOA record; when they see a newer serial, they request the updated zone data. Transfers can be full (AXFR) or incremental (IXFR), and they usually use TCP to ensure all records arrive reliably. They can also be secured with authentication like TSIG. While people might say “zone replication” informally, the standard term is zone transfer. “Zone update” describes changes within a zone, not the replication process, and “zone sync” isn’t the formal DNS term.

In DNS, the process of moving a zone’s data from a primary server to one or more secondary servers is called a zone transfer. This mechanism keeps all servers authoritative for a zone in sync. The primary holds the master copy, and secondary servers check the zone’s serial number in the SOA record; when they see a newer serial, they request the updated zone data. Transfers can be full (AXFR) or incremental (IXFR), and they usually use TCP to ensure all records arrive reliably. They can also be secured with authentication like TSIG. While people might say “zone replication” informally, the standard term is zone transfer. “Zone update” describes changes within a zone, not the replication process, and “zone sync” isn’t the formal DNS term.

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