What is the problem between campus network and off-campus network in universities? Why can't some courses be selected in off-campus Internet cafes?

Intranet is a local area network, that is, a qualified computer, to be exact, an IP address, before it can be accessed.

Off-campus network, to be exact, the Internet.

Course selection belongs to the internal teaching management of the school. If anyone (IP address) can access the login, it is easy to be attacked by hackers. This is to ensure the safety of school teaching.

What are the specialties of Guangdong Pharmaceutical University Specialty Group 202?

20 13 recruitment time now I am a college student. What are the requirements for college students to join the army in 1993? When did the specific conscription begin?

Stick to fitness for half a year, and the young man in his twenties is bald! What do you think of this matter?

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