CompTIA Security+ (SY0-701) — Question 180

A systems administrator notices that one of the systems critical for processing customer transactions is running an end-of-life operating system. Which of the following techniques would increase enterprise security?

Answer options

• A. Installing HIDS on the system
• B. Placing the system in an isolated VLAN
• C. Decommissioning the system
• D. Encrypting the system's hard drive

Correct answer: B

Explanation

Placing the system in an isolated VLAN restricts its access to other network resources, reducing potential attack vectors and enhancing security. While installing HIDS, decommissioning, and encrypting the hard drive can improve security, they do not provide the same immediate isolation from threats that a VLAN does.