Securing a cyber security internship, though challenging, is a fantastic way to join the profession. As an intern, the tasks you will perform will depend on your skill level and your capabilities. If you are well qualified the tasks you can expect include testing the security system, responding to minor breaches, monitoring the system for security events, etc.
You may not have years of experience in the field so populate your resume with any cybersecurity or IT experience, even if it includes projects in college. Your qualifications and skills section will be especially important for this position. Here is a recruiter-approved resume sample.