CompTIA A+ Core 2 Question I-40

A SOHO has had several issues with various unauthorized devices consuming the network’s bandwidth. There are only four network devices that are authorized to access the Internet as well as the local LAN’s resources. Which of the following security implementations would MOST likely help disable network access to the unauthorized devices?

A. Using complex passwords
B. Disabling the use of static IP addresses
C. Disabling ports
D. MAC filtering

Correct Answer: D