As a senior technical support engineer, you are expected to be familiar with the IT industry's wide range of terminology. The interviewer can present these in several different ways, using acronyms, formal names, or other types of descriptions for items you should be aware of. One way to prepare for these questions is to review an index of computer terminology and definitions. This will refresh your knowledge of these and keep them front of mind during the interview. When answering questions about technology terminology, avoid using acronyms and industry jargon that the interviewer may not know.
