Which statement best describes a forward zone's role?

• A. It forwards queries to upstream servers
• B. It hosts authoritative DNS for the zone
• C. It caches all DNS responses indefinitely
• D. It only handles dynamic updates

Answer: (A)

Forward zones determine how the server resolves queries by forwarding them to upstream servers instead of trying to answer locally. In this setup, if the DNS server can’t answer a query from its own data or cache, it sends the query to the configured forwarders, which then resolve it and return the result. This is the essence of a forward zone’s role: you delegate resolution to upstream DNS servers.

This isn’t about hosting authoritative data for the zone—that would be an authoritative zone. It also isn’t about caching indefinitely; DNS caching is governed by TTLs, so responses are cached only for their specified lifetimes. And it isn’t limited to dynamic updates; forward zones are about forwarding, not just handling dynamic changes.