To be eligible for the Diploma degree at Communication Training Institute in Bengaluru, candidates must have completed their 10+2 or equivalent examination from a recognized board. Additionally, applicants should have a strong interest in communication skills, public speaking, and media studies. Prior experience in related fields or extracurricular activities such as debate clubs or journalism will be considered a plus. Good communication skills, both written and verbal, are essential for success in this program. Candidates must also demonstrate a willingness to learn and improve their communication abilities throughout the course.