In DNS, what does the term zone refer to?

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Multiple Choice

In DNS, what does the term zone refer to?

Explanation:
A zone is a portion of the DNS namespace for which a particular server is authoritative. It represents an administrative boundary that is managed with a zone file containing all the resource records for names within that zone. This setup lets DNS authority be delegated: a parent zone can designate a subdomain to another server, which then hosts its own zone and answers queries for that subzone. A zone is not a secure tunnel for queries, nor is it the TTL value (which is set per record), nor the set of IP addresses themselves (those are stored in A/AAAA records inside the zone).

A zone is a portion of the DNS namespace for which a particular server is authoritative. It represents an administrative boundary that is managed with a zone file containing all the resource records for names within that zone. This setup lets DNS authority be delegated: a parent zone can designate a subdomain to another server, which then hosts its own zone and answers queries for that subzone. A zone is not a secure tunnel for queries, nor is it the TTL value (which is set per record), nor the set of IP addresses themselves (those are stored in A/AAAA records inside the zone).

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