The NIOS On-Demand Examination System (ODES) is a flexible examination process designed to help learners appear for exams whenever they feel prepared, rather than waiting for fixed schedules. It is especially useful for students who have failed, wish to improve their grades, or could not appear in the main NIOS exams. Under ODES, examinations are conducted throughout the year at selec... https://niosadmission.com/nios-on-demand-examination/