Which of the following is by far the most common prevention system from a network security perspective?
A.
Firewall
B.
IDS
C.
IPS
D.
Hardened OS
E.
Tripwire
F.
None of the choices.
Explanation:
User account access controls and cryptography can protect systems files and data, respectively. On the other
hand, firewalls are by far the most common prevention systems from a network security perspective as they
can shield access to internal network services, and block certain kinds of attacks through packet filtering.