Windows DNS Interviews Question and Answer Part 1

Article Index

DNS (Domain Naming System or Distributed Naming System) Related Interview Question & Answer.

1) What is DNS?


2) What is the main purpose of a DNS server?

DNS servers are used to resolve FQDN hostnames into IP addresses and vice versa.

3) How does a computer know to which DNS server it has to sent the request


4) What is the port no of DNS?

UDP port number - 53

5) How many root DNS servers are available in the world?

6) What is a Forward Lookup?

Resolving Host Names to IP Addresses, Address mapping (A) records maps a host name to an IP address

7) What is a Forward Lookup?

Reverse-lookup pointer (PTR) records map an IP address to a host name.

8) What is a Resource Record?

It is a record provides the information about the resources available in the N/W infrastructure.