350-401 Question 159
Single answerA network engineer is tasked with deploying a wireless network in a corporate environment that requires seamless roaming between access points (APs) for VoIP devices. Which IEEE standard or feature must the engineer enable to ensure fast and secure roaming?
- A
802.11r
- B
802.1X
- C
802.11n
- D
Wi-Fi Protected Setup (WPS)
Show answer and explanation
Correct answer: A
Explanation
The 802.11r standard is specifically designed to improve roaming performance by allowing client devices to transition between access points without re-authenticating with the RADIUS server during each handoff. This is critical in scenarios like VoIP or video calls where minimal delay is required during roaming, ensuring a seamless user experience.
- A. Correct.
802.11r, also known as Fast BSS Transition, is specifically designed to enable fast and secure roaming between access points, making it ideal for applications like VoIP or video conferencing where seamless connectivity is crucial.
- B. Incorrect.
802.1X is a security standard used for network access control, but it does not directly address fast roaming between access points.
- C. Incorrect.
802.11n is a wireless standard that improves throughput and range but does not include features for fast roaming between access points.
- D. Incorrect.
Wi-Fi Protected Setup (WPS) is a method to simplify the process of securing a wireless network, but it is unrelated to roaming capabilities.