At first glance, you may believe that this is a technical question. However, if you reread the question, it asks for your opinion, not a definition or explanation. By framing the question in this manner, the interviewer is assuming you know what DNS monitoring means. This may indicate that they are considering eliminating this process from their current operations. As the interview progresses, you will gain additional insight into the organization's processes, procedures, and operations. You should already know quite a bit about this based on the research you did prior to the interview. Any time you answer a question, you should align it with the needs of the organization. This better qualifies you for the position for which you are interviewing.
Foxample: "In my opinion, DNS monitoring is critically important. While I've heard counterpoints to this position, they are typically based on the assumption that DNS monitoring indicates that domain naming services are weak. However, the monitoring requires few resources and ensures that users can access any resource available on the Internet easily. It also reduces the vulnerability of data passing through port number 53 and ensures unauthorized users do not have access to the organization's network."
