It was a really good lecture. I think it will be a great help to those who are preparing for the Level 2 Digital Forensics Specialist for the first time in establishing the concepts. The unfortunate thing is that when you solve the actual past exam books, there are many problems that are difficult to solve with only basic concepts, so I think it will be difficult to prepare for difficult problems by just listening to this lecture. I recommend that those who want to pass the written exam solve the problem books published by the problem-providing organization before going.