SEP Definition update questions

Hi All,

Please help me answer below queries.

> If my SEPM is in latest version 12.1 RU3 and my clients are still running SEP11. Can my SEP 11 client still get definitions from my SEPM?

> If my SEPM is 12.1 RU3 and I promote one GUP (with SEP 11 installed). Will my GUP able to update clients with SEP 11 version?

>  If my GUP is running SEP 11 client. Will it be able to update both SEP 11 and SEP 12 clients?

> Does GUP update all types of definitions such as NTP, PTP or only AV/AS?

thanks