When you submit in LearnIT, you can choose to make the submission "confidential" and only the examiners will be able to see it. In addition, the oral exam will be held behind closed doors, i.e. without an audience, on your request.
If you mark your submission "official" you can choose to share the submission with ITU students only or make it accessible to people without an ITU-login as well.
Please use the possibility of confidentiality with care, as important knowledge sharing will be lost if it is used too often.