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SD

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Installation and login
1. What is the system requirement of SD?
2. How can I download the necessary software?
3. What should I do if I forget my password?
 

Questions during Lessons
4. I can't start my lesson, and it shown "Session Timeout". What should I do?
 

About submission
5. Can I re-do my submitted lessons or part of exercises?
 

Score and answers
6. Some students are copying answers online. How do we avoid it?
 
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