To enable query log in mysql you can edit /etc/mysql/my.cnf  and add these lines after [mysqld] line  general_log_file = /tmp/mysql.log general_log = 1 Then restart mysql service  sudo service mysql restart Now you can monitor queries written to /tmp/mysql.log Create a sample quiz with multiple qtypes include CLOZE, multiple choice etc. Preview quiz to ensure that question definitions are loaded into the MUC. Monitor DB queries Start exam as student Check if queries are being made to the DB for question construction information. Expected outcome, queries to {question} table etc are not being made when starting an attempt in quiz. I.e. there shouldn't be any SELECT * FROM mdl_question when student starts attempt Once finished don't forget to remove those lines from mysql config and restart mysql service to stop watching queries