Hello Aspirant,
The entrance will contain questions from mostly current affairs and general knowledge of social and media history; polity; economy; international developments and India’s relationship with the world etc. Do focus more on the cultural aspects of the topics . You should know about the Indian Constitution to answer questions based on the rights of citizens and another major area from where questions can come is values and ethics in journalism.
Indian Institute of Mass Communication (IIMC ) Entrance Exam by Sheetal Thapar will be very useful in general. Apart from that
Success Master: Journalism & Mass Communication Entrance Examinations by Arihant Publications(generally books from Arihant publications are good for entrance preparations in all areas),History of Indian Journalism by J Natrajan,The Perfect Study Resource for Jamia Millia Islamia by Arihant Publication, Mass Communication In India by Keval J Kumar ,Popular Master Guide for Journalism and Mass Communication Entrance Exam by R. Guptaand for general knowledge you can refer Manorama Yearbook by Manorama publication.You can try to get their pdf versions online if it is available or refer paperback versions . Reading these books will be more than enough and apart from that you can use reliable youtube contents or tutors for the same. For current affairs and GK there are many online apps that provides mock tests or question banks and several youtube videos from top online tutoring channels. You can get the syllabus from their official website, so prepare according to the topics given .
https://www.careers360.com/university/jamia-millia-islamia-new-delhi/pg-diploma-in-journalism-hindi-medium-self-finance-course
All the best
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