Which of the following protects against unauthorized access to confidential information via encryption and works at the network layer?

Which
of the following protects against unauthorized access to confidential information via encryption and
works at the network layer?

Which
of the following protects against unauthorized access to confidential information via encryption and
works at the network layer?

A.
Firewall

B.
NAT

C.
MAC address

D.
IPSec

Explanation:
Internet Protocol security (IPSec) protects against data manipulation and unauthorized
access to confidential information via encryption and
works at the network layer.
IPSec provides machine-level authentication as well as data encryption. It is used for VPN
connections that use the L2TP protocol. It secures
both data and password.
Answer option B is incorrect. NAT also works at the network layer, but it does not provide
encryption for data.



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