200-301 Question 19
Select 3An organization is deploying multiple access points (APs) in a large office building to provide seamless wireless coverage. Which of the following configurations is critical to ensure optimal performance and minimize interference between the APs?
- A
Configure access points to use non-overlapping channels on the 2.4 GHz band.
- B
Set all access points to the same transmission power level to ensure uniform coverage.
- C
Enable 802.11r (Fast Transition) to facilitate seamless roaming for mobile clients.
- D
Use a single SSID across all access points for seamless connectivity.
- E
Disable Dynamic Host Configuration Protocol (DHCP) on all access points to avoid IP conflicts.
Show answer and explanation
Correct answers: A, C, D
Explanation
To ensure optimal performance in a multi-AP environment, it is critical to configure non-overlapping channels to reduce interference, enable features like 802.11r for efficient client roaming, and use a single SSID for seamless connectivity. Incorrect power levels and unnecessary changes to DHCP settings can lead to suboptimal network performance or connectivity issues.
- A. Correct.
Correct: Configuring non-overlapping channels on the 2.4 GHz band (e.g., channels 1, 6, and 11) reduces co-channel interference and maximizes performance.
- B. Incorrect.
Incorrect: Setting all APs to the same transmission power level is not always ideal. Power levels should be adjusted based on the environment to avoid coverage overlap or dead zones.
- C. Correct.
Correct: Enabling 802.11r (Fast Transition) improves roaming efficiency, allowing mobile clients to move between APs without noticeable disruptions.
- D. Correct.
Correct: Using a single SSID across all APs provides seamless connectivity, making the wireless network appear as a unified system to clients.
- E. Incorrect.
Incorrect: Disabling DHCP on all APs is unnecessary. APs typically operate as Layer 2 devices and do not perform DHCP functions unless explicitly configured as a DHCP server.