How many ways jquery links can be updated

How many ways jquery links can be updated

Hi everyone.. I've been asked this question in an interview but as i'm new-bee to programming platform so i could able to answer it . So, i'm requesting for your help. How many ways Jquery library can be updated on our own site. Is there any jquery methods to accomplish this requirement. I've been heard about CDN links, apart from that. Is any other ways possible ? thanks in advance..