Hii Hemant,

Yes, one can appear for DuJAT again irrespective of what they were pursuing or if they had dropped a year for the preparation.

For more information on eligibility/entrance test/admsision
procedures you can visit this link -
https://bschool.careers360.com/articles/du-jat-eligibility-criteria

Previous year paper for the DU-JAT
https://images.careers360.mobi/sites/default/files/DU-JAT-BMS-BBA-N-BA-Business-Economics-01.pdf

Hope it helps.
Thanks.