Final answer:
The university installed a Cache server to save time by storing frequently accessed web pages and delivering them from the cache instead of the original server.
Step-by-step explanation:
The university installed a Cache server to save time. This server saves earlier responses for a certain amount of time, resulting in a faster response to a new request. It stores a copy of frequently accessed web pages so that the next time a user requests the same page, it can deliver it from the cache instead of retrieving it from the original server.