300-425 Question 118
Select 4A company is experiencing intermittent Wi-Fi disruptions in a high-density office environment. Upon investigation, the network administrator identifies interference from several sources, including non-Wi-Fi devices. Which of the following are considered potential interferers in this scenario?
- A
Bluetooth devices operating in the 2.4 GHz band
- B
Microwave ovens
- C
Wi-Fi access points operating on different channels
- D
Cordless phones using the 2.4 GHz band
- E
LED lighting systems with unshielded drivers
Show answer and explanation
Correct answers: A, B, D, E
Explanation
Non-Wi-Fi devices operating in the 2.4 GHz spectrum or emitting electromagnetic interference are common sources of interference in wireless networks. Identifying and mitigating these interferers is crucial to maintaining a stable and high-performing Wi-Fi environment.
- A. Correct.
Bluetooth devices operate in the 2.4 GHz spectrum and can cause interference with Wi-Fi networks, especially when operating in close proximity.
- B. Correct.
Microwave ovens emit electromagnetic interference in the 2.4 GHz band, which can disrupt Wi-Fi signals.
- C. Incorrect.
Wi-Fi access points operating on different channels are part of the Wi-Fi network and typically do not cause interference unless configured improperly or overlapping on the same channel.
- D. Correct.
Cordless phones that use the 2.4 GHz band can interfere with Wi-Fi signals, as they operate in the same frequency range.
- E. Correct.
LED lighting systems with unshielded drivers can emit electromagnetic interference, impacting nearby Wi-Fi devices.