CompTIA Network+ (N10-008) — Question 213
An office area contains two PoE-enabled WAPs. After the area was remodeled, new cable uplinks were installed in the ceiling above the fluorescent lights. However, after the WAPs were reconnected, users reported slowness and application errors. An intern reviewed the network and discovered a lot of CRC errors. A network engineer reviewed the intern's work and realized UTP cabling was used. Which of the following is the MOST likely cause of the CRC errors?
Answer options
- A. Insufficient power at the antennas
- B. PoE and UTP incompatibility
- C. Electromagnetic interference
- D. Wrong cable pinout
Correct answer: C
Explanation
The most likely cause of the CRC errors is electromagnetic interference (EMI), which can occur when cabling is run near fluorescent lights, leading to signal degradation. Insufficient power at the antennas and PoE-UTP incompatibility are not relevant in this scenario as they do not directly explain the CRC errors. A wrong cable pinout could cause connectivity issues but would not typically lead to CRC errors.