What does DNS stand for, and can you explain how it works?

As a systems engineer, you are expected to know a wide variety of different technology topics. Since networking and leveraging the power of the internet is critical to any business, you should be especially well versed in this area. Being able to describe how the internet works to the interviewer will demonstrate your qualifications for this role. Since DNS services are integral to the function of web browsers and resource lookups, you are expected to discuss this topic in-depth. Additionally, many internet service interruptions are actually a loss of DNS service, so you should be able to explain how to diagnose and repair this issue.