1. Pre-job training can be conducted during the probation period. As for the signing of the labor contract, it must be within 30 days from the date of employment. If your pre-job training period is more than 30 days, then you should pay attention to the signing time of the labor contract. The legal basis is the labor contract law.
2. If the internship fails, it can be regarded as unqualified. However, when interviewing or applying for a job, did the job description indicate it, or did you know and agree to this condition? Do you have written evidence? In addition, this internship period must be within the probation period.