In DNS resolution, when the resolver returns the best possible answer it can without performing recursive lookups, what type of query is this?

In DNS resolution, when the resolver returns the best possible answer it can without performing recursive lookups, what type of query is this?

• A. Recursive
• B. Cache
• C. Forward
• D. Iterative

Answer: (D)

In DNS, there are two common ways a query can be handled: recursive and iterative. If the resolver returns the best answer it can without doing recursive lookups, it’s using an iterative approach. In this mode, the server may respond with what it has in cache or with a referral to another DNS server that the client should query next. The client then continues the process, querying the next server and so on, until the final answer is obtained or it fails. For example, a root server might refer you to a top-level domain server, and you follow those referrals step by step rather than having one server fetch the entire chain for you. That’s why this scenario aligns with an iterative query.

In DNS, there are two common ways a query can be handled: recursive and iterative. If the resolver returns the best answer it can without doing recursive lookups, it’s using an iterative approach. In this mode, the server may respond with what it has in cache or with a referral to another DNS server that the client should query next. The client then continues the process, querying the next server and so on, until the final answer is obtained or it fails. For example, a root server might refer you to a top-level domain server, and you follow those referrals step by step rather than having one server fetch the entire chain for you. That’s why this scenario aligns with an iterative query.