100-150 Question 115
Select 3You are troubleshooting a network performance issue in an office environment where Wi-Fi (802.11) is the primary means of connectivity. Users report intermittent connectivity drops and slow speeds. Upon investigation, you discover that the network is using the 2.4 GHz frequency band. Which of the following could be contributing to the issue?
- A
Interference from nearby microwave ovens and cordless phones
- B
Congestion caused by neighboring Wi-Fi networks using the same frequency band
- C
Limited bandwidth availability in the 2.4 GHz frequency compared to 5 GHz
- D
Physical obstructions like walls and furniture blocking the signal
- E
Fiber optic cable degradation causing signal loss
Show answer and explanation
Correct answers: A, B, C
Explanation
The 2.4 GHz frequency band is prone to interference from household devices like microwaves and cordless phones, as well as congestion from overlapping Wi-Fi networks and limited bandwidth availability. These factors can collectively contribute to poor network performance in environments using this frequency. While physical obstructions and fiber optic degradation are valid concerns in other contexts, they are not the primary issues in this scenario.
- A. Correct.
Microwave ovens and cordless phones operate on the 2.4 GHz frequency and can cause significant interference with Wi-Fi signals in the same band.
- B. Correct.
The 2.4 GHz band is crowded, as many devices and networks use this frequency. Overlapping channels can lead to congestion and performance degradation.
- C. Correct.
The 2.4 GHz frequency band has fewer channels and less available bandwidth compared to the 5 GHz band, which can constrain network performance.
- D. Incorrect.
Physical obstructions can impact wireless signals, but Wi-Fi in the 2.4 GHz band is less affected by walls and furniture compared to 5 GHz signals.
- E. Incorrect.
Fiber optic cables are not involved in this scenario, as this is a wireless network issue.