Enterprise IT runs on Microsoft’s Active Directory Services. Managing roles, understanding the tools and functions of ADS, and being able to explain them is a common part of the interview process for an IT position in a large organization
In small business networks and home networks you likely don’t need a router, but in large networks you will have to know when to use a router and when to use a Nat. This question is less about your knowledge of each, and more about proving that you have done large deployments. For more detail watch the video here!
There are several philosophies to security and virus prevention. You have to balance users desire for control, and the ability to support users when things go wrong. Your philosophy on desktop vs network anti-virus is a window in to your thoughts on total network security. Watch me talking about this topic here!