200-301 Question 123
Select 3A network engineer is troubleshooting a wireless network experiencing intermittent connectivity issues. They suspect interference from nearby devices. Which wireless principles should the engineer consider to address the issue?
- A
Channel overlap in the 2.4 GHz frequency range
- B
Signal attenuation caused by physical obstructions
- C
SSID broadcast settings
- D
Interference from non-Wi-Fi devices such as microwave ovens
- E
The use of WPA2 encryption for security
Show answer and explanation
Correct answers: A, B, D
Explanation
Wireless communication is affected by several principles, including channel overlap, signal attenuation, and interference from non-Wi-Fi devices. Understanding these factors helps in diagnosing and resolving connectivity issues. While SSID broadcast and WPA2 encryption are important for visibility and security, they do not pertain to the root causes of interference or weak signals.
- A. Correct.
Channel overlap in the 2.4 GHz frequency range can cause interference between nearby access points, leading to degraded wireless performance.
- B. Correct.
Signal attenuation occurs when physical obstructions like walls or furniture weaken the wireless signal, impacting connectivity.
- C. Incorrect.
SSID broadcast settings do not directly affect connectivity or interference but are related to network visibility.
- D. Correct.
Non-Wi-Fi devices, such as microwave ovens, can cause significant interference in the 2.4 GHz range, leading to intermittent wireless issues.
- E. Incorrect.
WPA2 encryption is a security measure and does not address issues related to wireless interference or connectivity.