What does the norecurse option do in NSLookup?

• A. Queries other DNS servers recursively to resolve the name
• B. Only provides information that is on the querying machine
• C. Disables DNS lookups entirely
• D. Caches results locally for speed

Answer: (B)

norecurse is about asking the DNS server not to chase additional lookups to resolve a name. When you enable this mode, the server should answer only with information it already has—data from its own authoritative zones or from its cache—without querying other servers to complete the resolution. In other words, the response comes from what is locally available on the server you queried, rather than being built by recursive queries across the DNS hierarchy. It won’t fetch the final answer by asking other servers, and if it can’t answer from its own data, it may return a referral or indicate the result isn’t available in that non-recursive view.