Understanding DNS Query

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I am taking a course here on DNS on ITPro.tv, and I don't understand a few things that I seek your help with.
First I tried this query:

I want to know what this Server: UnKnown and Address: 192.168.43.1 are. Is this the DNS resolver built-in Windows OS? Is this what is responsible for making further queries in order to get the answer?

Secondly, I tried reverse ip lookup:

It says "Authoritative answers can be found from:" but no answer. What should I understand from this response?

@Bablu-Kumar said in Understanding DNS Query:

I am taking a course here on DNS on ITPro.tv, and I don't understand a few things that I seek your help with.
First I tried this query:

I want to know what this Server: UnKnown and Address: 192.168.43.1 are. Is this the DNS resolver built-in Windows OS? Is this what is responsible for making further queries in order to get the answer?

The unknown server means that you do not have a reverse lokup zone setup. You would create a PTR record and point to your DNS server. My assumption as to the addresss is that this is also your default gateway of your computer, probably pointing to your wireless router if you're at home.

Secondly, I tried reverse ip lookup:

It says "Authoritative answers can be found from:" but no answer. What should I understand from this response?

You typed a query to a non-authoritative dns server. It returned to you an answer from it rather than the authoritative server. You will only get answers from an authoritative server by querying them directly. I'm sure that you will get this soon in the course.

I moved this topic from the Audit section to the General Section as it fit better here than there.