CompTIA Network+ (N10-007) — Question 4

A building is equipped with light sensors that turn off the fluorescent lights when natural light is above a certain brightness. Users report experiencing network connection issues only during certain hours. The west side of the building experiences connectivity issues in the morning hours and the east side near the end of the day. At night the connectivity issues affect the entire building. Which of the following could be the cause of the connectivity issues?

Answer options

• A. Light sensors are interfering with the network
• B. EMI from the lights is interfering with the network cables
• C. Network wiring is run perpendicular to electrical conduit
• D. Temperature changes are causing attenuation in copper cabling

Correct answer: C

Explanation

The correct answer is C because running network wiring perpendicular to electrical conduits can lead to interference from electromagnetic fields, which might explain the connectivity issues. Options A and B suggest direct interference from light sensors or lights themselves, which is less likely to cause specific timing-related problems. Option D, regarding temperature changes, is plausible but does not specifically relate to the described connectivity patterns.