写出大学生个人事务管理系统中的protected和public

Protected features in a university student personal affairs management system may include: 1. User authentication: This feature ensures that only authorized users can access the system by requiring a username and password. 2. Data encryption: Personal data such as tasks, deadlines, and notes may be encrypted to protect against unauthorized access or theft. 3. Access control: The system may have different levels of access for different users, such as administrators and regular users. 4. Backup and recovery: Protected backup and recovery options may be available to ensure that user data is not lost in case of system failure or other issues. 5. Secure communication: The system may use secure communication protocols to protect user data during transmission over the internet. 6. Audit trail: A protected audit trail may be maintained to track user activity and detect any unauthorized access or changes to the system. 7. Password policies: The system may enforce strong password policies to ensure that user accounts are secure and protected from hacking attempts. 8. Role-based access control: Different users may have different roles and permissions within the system, and these may be protected by role-based access control mechanisms. Public features in a university student personal affairs management system may include: 1. Task management: The system may allow students to create, edit, and delete tasks, set deadlines, and prioritize tasks. 2. Calendar: The system may provide a calendar view to help students manage their schedules and keep track of important dates. 3. Note-taking: The system may allow students to take and organize notes related to their coursework or other activities. 4. Collaboration: The system may allow students to collaborate with others on group projects or assignments. 5. Reminders: The system may provide reminders and notifications to help students stay on top of their tasks and deadlines. 6. Progress tracking: The system may allow students to track their progress on tasks and assignments, and provide feedback on their performance. 7. Resource management: The system may provide access to resources such as textbooks, articles, and other materials related to coursework or other activities. 8. Reporting: The system may allow students to generate reports on their progress, performance, and other metrics related to their personal affairs management.