CompTIA Network+ (N10-007) — Question 512

A VoIP device is not getting power at a new user's desk. The technician tests the components with a PoE injector at the switch and resolves the issue. Which of the following is the MOST likely cause of the issue?

Answer options

• A. VLAN mismatch
• B. Bad switchport
• C. TX/RX reverse
• D. Latency
• E. Damaged cable

Correct answer: E

Explanation

The correct answer is E, as a damaged cable can prevent power from reaching the VoIP device, which is crucial for its operation. The other options are less likely because a VLAN mismatch, bad switchport, TX/RX reverse, and latency typically affect data transmission rather than power delivery.