Online examination system (oes) is based on nine type of questions exam system: Essay, single choice, essay multiple choice, single choice, multiple choice, true/false, fill in the blank, match the following, match matrix, integer type.

Taxonomy of Examination software
Users of oes are classified into three categories: administrators, test conductors and students. Administrators are responsible for management of system users, subjects, tests, questions, results, system backup and recovery, etc. Test conductors are responsible for preparing subjects, tests and questions. Students are the candidates appearing for the examination.
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