Question

A system engineer enhances the security of a network by adding firewalls to both the external network and the internal company network. The firewalls are products of two separate companies. This is an example of what type of security control practice?

Answer 1

Vendor diversity

Step-by-step explanation:

Different cybersecurity companies maintain different codebases, which means an exploit that might poke holes in the security of one likely won't breach the other. In this situation, the network would still have an active and effective firewall from one vendor even as the exploit from the other vendor's firewall is being patched.