100-150 Question 116
Select 4A company is experiencing intermittent connectivity issues with its Wi-Fi network in a large office. Upon investigation, the network technician finds that most devices are operating on the 2.4GHz frequency band, while the office is in a densely populated urban area. Which of the following are likely sources of interference causing these connectivity issues?
- A
Bluetooth devices
- B
Microwave ovens
- C
Neighboring Wi-Fi networks
- D
Weather conditions
- E
Cordless phones operating at 2.4GHz
Show answer and explanation
Correct answers: A, B, C, E
Explanation
The 2.4GHz band is prone to interference because it is widely used by many devices, including Bluetooth devices, microwave ovens, and cordless phones. Additionally, in densely populated areas, overlapping Wi-Fi signals from neighboring networks can lead to channel congestion. Weather conditions, however, do not have a notable effect on Wi-Fi at this frequency.
- A. Correct.
Bluetooth devices also operate on the 2.4GHz band and can interfere with Wi-Fi signals when nearby.
- B. Correct.
Microwave ovens emit electromagnetic interference around the 2.4GHz frequency, which can disrupt Wi-Fi communication.
- C. Correct.
Neighboring Wi-Fi networks in a densely populated area can use overlapping channels in the 2.4GHz band, causing interference.
- D. Incorrect.
Weather conditions do not significantly impact Wi-Fi performance in the 2.4GHz band, making this an unlikely cause of interference.
- E. Correct.
Cordless phones operating on the 2.4GHz band can generate interference and degrade Wi-Fi performance.