1) Tell me about a time... xyz - disagreement between team members, a plan changed, etc. 2) Tell me about a time you had to solve a technical hurdle that may not have been identified by the engineers Personally I wasn't asked technical questions about DNS but I would highly recommend knowing your stuff when it comes to how the internet works, nameservers (all types - authoritative, recursive, top-level DNS, etc), networks, what happens when you hit enter in a browser, how a page is rendered/DOM loading order, ip addresses, etc
