Tell me about a difficult challenge you faced as a network admin.

This is a general question which the interviewer may ask early in the interview to begin the conversation, learn more about your background, and collect some information they can use for subsequent questions. When discussing challenges, your answer should align with the challenges the organization with which you are interviewing may be facing. You can learn about these by researching the organization, its network infrastructure, and any challenges it talks about. Resources for the research include its website, public financial documents, or discussions in user forums. Once you discover these, you can answer this question by describing a similar challenge and the ways resolved them.