I know cheating is not the right thing to do, but sometimes you have to. Imagine when you have to submit your assignment by tomorrow and you haven’t even started it yet, for whatever reasons. And I’m sure your professor doesn’t want to hear any excuses for not submitting your task.
So to buy some time, you can submit a broken file or a trash file. Later you can blame the professor’s computer, the server, or even the internet or network for making your file broken. You can generate your broken file from File Destructor. File Destructor is an online service to generate a broken or unreadable file which you can submit to your professor, who will then confirm it or ask you to resubmit. In that time period you still have plenty of time to work on and finish your task.
Even if this technique is not the right thing to do, at least it can save you. But don’t ever try this on a professor who is also a sysadmin, because sysadmins know when a file was last modified from the file metadata. But then again, you can edit the file metadata with tools from the internet. So be creative.