Okay. We know about cisco exams. But how to do these vender independent exams? what is the organization conduct this kind of exams? And do they provide documents/trainings etc like Cisco. If possible please share some links to find more information about these exams.
Ok putha, So to be honest SDX isn't a domain I roam in. But for security you can try the following
https://www.offensive-security.com/ - these exams are well sort after
https://www.eccouncil.org/ - shiitier organization. But good entry point
https://elearnsecurity.com/ & https://ine.com/pages/elearnsecurity-pricing - these are slowly catching up. Much better than EC Council
https://www.isaca.org/ - Domain specific
https://www.isc2.org/ - Ultimate target if you are planning to have a good carrier in security
If you ask me I think the top 2 would be offensive security and ISC2