Which of the following levels of encryption is used by financial institutions throughout the world and other customers with special permits?

Which of the following levels of encryption is used by financial institutions throughout the world
and other customers with special permits?

A.
VPN

B.
VPN+DES

C.
Strong

Explanation:

: This is the correct answer, this kind of institutions need the integrity and authentication benefits
of a VPN, and also the privacy provided by an encryption algorithm like DES, or 3DES in case that

its necessary. With this answer we get three most important pillars of network security: Integrity
(Through digital signatures), Privacy (through encryption) and Authenticity (through
authentication).