200-301 Question 20
Single answerA network engineer is configuring a wireless network for a small office using multiple access points (APs). To ensure seamless roaming for clients between APs without interruption, which configuration parameter must be consistent across all access points?
- A
SSID
- B
Channel
- C
Transmit Power
- D
Encryption Key
Show answer and explanation
Correct answer: A
Explanation
To enable seamless roaming for wireless clients between access points, the SSID must be consistent across all access points in the same network. This ensures that clients perceive the APs as part of the same wireless network. Other parameters, such as channel and transmit power, may differ based on the deployment scenario.
- A. Correct.
The SSID (Service Set Identifier) must be the same across all access points to allow seamless roaming for wireless clients. If the SSID differs, clients will treat the APs as separate networks.
- B. Incorrect.
Channels should typically differ on nearby access points to avoid interference, especially in the 2.4 GHz band where channels overlap.
- C. Incorrect.
Transmit power can vary between access points depending on the required coverage area. It does not need to be consistent across all APs.
- D. Incorrect.
The encryption key should match for proper security, but it is not the primary factor in ensuring seamless roaming. The SSID is the critical parameter.