I was fortunate enough to work in the security industry while studying for the CISSP.
Dealing with firewalls and creating VPNs was a daily routine, and this made the Cryptography domain of the CISSP VERY easy.
Others may not have the same opportunity, so I thought I would share with everyone how symmetric encryption is used in real life.
For other CISSP videos:
Let me know if you have any questions and thanks for watching!