Which of the following protects against unauthorized access to confidential information via
encryption and works at the network layer?
A.
Firewall
B.
NAT
C.
IPSec
D.
MAC address
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.
data.
c
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