350-401 Question 157
Single answerA network administrator is troubleshooting a wireless performance issue in a Cisco Enterprise network where wireless clients frequently experience poor connectivity and slow speeds during peak usage hours. The network utilizes both 2.4 GHz and 5 GHz bands. What configuration adjustment should the administrator consider to improve performance?
- A
Disable the lower data rates on the 2.4 GHz band.
- B
Increase the transmit power of all access points on the 5 GHz band.
- C
Enable a single SSID for both frequency bands to simplify client connectivity.
- D
Reduce the channel width on the 5 GHz band from 80 MHz to 40 MHz.
Show answer and explanation
Correct answer: A
Explanation
In environments with heavy wireless usage, disabling lower data rates on the 2.4 GHz band can improve performance by reducing management traffic overhead and encouraging clients to use higher data rates. This adjustment can enhance the efficiency of the wireless network without introducing additional interference or reducing throughput capacity.
- A. Correct.
Disabling lower data rates on the 2.4 GHz band reduces overhead and forces clients to connect at higher data rates, improving overall performance in environments with high usage.
- B. Incorrect.
Increasing the transmit power of all access points can lead to co-channel interference in dense environments, which may further degrade performance.
- C. Incorrect.
Using a single SSID for both bands may simplify connectivity but does not directly address performance issues caused by poor spectrum utilization or congestion.
- D. Incorrect.
Reducing the channel width on the 5 GHz band decreases throughput capacity and is generally not recommended unless there is severe interference or co-channel overlap.