CompTIA Security+ (SY0-501) — Question 168

A network administrator wants to ensure that users do not connect any unauthorized devices to the company network. Each desk needs to connect a VoIP phone and computer.
Which of the following is the BEST way to accomplish this?

Answer options

• A. Enforce authentication for network devices
• B. Configure the phones on one VLAN, and computers on another
• C. Enable and configure port channels
• D. Make users sign an Acceptable use Agreement

Correct answer: A

Explanation

The best approach is to enforce authentication for network devices, as this ensures that only authorized devices can connect to the network. Configuring separate VLANs for phones and computers (option B) may help with organization but does not prevent unauthorized access. Enabling port channels (option C) is related to bandwidth and redundancy, not security. Making users sign an Acceptable Use Agreement (option D) does not technically prevent unauthorized device connections.