A forwarder in DNS is used to forward queries to another DNS server when the local server cannot resolve them.

• A. True
• B. False
• C. Not sure
• D. It depends

Answer: (A)

Forwarding in DNS means a local DNS server hands off queries it cannot answer to another DNS server. When the local server can’t resolve a name from its cache or authoritative zones, it forwards the request to a designated forwarder, which then takes on the resolution, possibly querying other servers and returning the result. This behavior matches the statement exactly: a forwarder is used to forward queries to another DNS server when the local server cannot resolve them. In practice, forwarders help centralize outbound resolution and cache results, though some setups may rely on root hints or perform iterative resolution without a forwarder.