CompTIA Network+ (N10-009) — Question 299
A company experiences an incident involving a user who connects an unmanaged switch to the network. Which of the following technologies should the company implement to help avoid similar incidents without conducting an asset inventory?
Answer options
- A. Screened subnet
- B. 802.1X
- C. MAC filtering
- D. Port security
Correct answer: D
Explanation
Port security is effective in preventing unauthorized devices from connecting to the network by limiting the number of MAC addresses allowed on a port. The other options, such as screened subnets and 802.1X, either require more extensive configurations or do not directly control access at the port level like port security does.