A survey with "file upload" part is used in an ePortfolio assignment, which is configured "only self evaluation". A participant uploads a pdf, publishes the assignment and gives access rights to a coach to evaluate it.
=> NOK: The coach only sees the greyed out entry of the file upload and has no chance of opening or downloading the file to review it.
=> OK: The file should be downloadable or openable for viewing.
For comparison: If the assignment is configured "auto and external evaluation" the coach and participant both can open the uploaded pdf file in the tab "evaluation" in the e-portfolio as part of the report.