A company has client computers that run Windows 10. The client computer systems frequently use
IPSec tunnels to securely transmit data. You need to configure the IPSec tunnels to use 256-bit
encryption keys. Which encryption type should you use?

A.
3DES

B.
DES

C.
RSA

D.
AES

Explanation:
IPSec tunnels can be encrypted by 256-bit AES. L2TP/IPsec allows multiprotocol traffic to be
encrypted and then sent over any medium that supports point-to-point datagram delivery, such as
IP or Asynchronous Transfer Mode (ATM). The L2TP message is encrypted with one of the
following protocols by using encryption keys generated from the IKE negotiation process: Advanced
Encryption Standard (AES) 256, AES 192, AES 128, and 3DES encryption algorithms.