When in the process of running the quiz does the problem occur? Is it in the middle of the quiz when students are responding to questions? Or at the end when they all submit, or at the start when they all try to start their quiz at the same time? Or, is it even before that when everyone tries to log in and navigate to the quiz?
1000 simultaneous students attempting a quiz is perfectly possible (according to MoodleMoot prestanatation I have seen given by Moodle Partners) . However, as Visvanath says, it is not something to do casually. It needs to be set up properly - e.g. with well configured caching, and more than one web server (so database on a separate server) etc.
1000 simultaneous students attempting a quiz is perfectly possible (according to MoodleMoot prestanatation I have seen given by Moodle Partners) . However, as Visvanath says, it is not something to do casually. It needs to be set up properly - e.g. with well configured caching, and more than one web server (so database on a separate server) etc.