I applied for a network maintenance interview in a hotel and passed. What problems will be encountered in the second interview?

The general company asked you to go for a second interview, which means that it was basically successful. It is estimated that you will be asked some technical questions during the second interview, mainly related to your work. Probably not too difficult. Don't worry, the initial test has passed, and the second test will be fine. There is nothing wrong with believing in yourself. I wish you success:)