CompTIA Network+ (N10-009) — Question 355

After a networking intern plugged in a switch, a significant number of the users in a building lost connectivity. Which of the following is the most likely root cause?

Answer options

• A. VTP update
• B. Port security issue
• C. LLDP misconfiguration
• D. Native VLAN mismatch

Correct answer: A

Explanation

The correct answer is A, as a VTP update can propagate configuration changes throughout a network, potentially causing issues like loss of connectivity if misconfigured. The other options, while they can cause network problems, are less likely to lead to widespread connectivity loss simply from adding a switch.