What lights are common to most modems, and what do each one of them indicate?

This is a very basic technical question that every IT support specialist should be able to answer. The complexity of the questions asked during an interview will depend on the level of IT support you are expected to provide in this role. This type of question would qualify as an entry-level inquiry. If you are interviewing for more complex roles, you may be presented with scenarios involving complex issues that are difficult to diagnose and resolve. The best way to prepare for an interview is to review your knowledge, the issues you are likely to encounter, the terms and processes involved with this job, and any other information you may be asked about during the interview. Practicing these types of questions also helps you be prepared and remain calm during the interview.