H12-323_V2.0 · Question #532
In WLAN networks, WLAN roaming optimization technologies such as PMK fast roaming and 802.11r fast roaming are all optimized to shorten roaming time.
The correct answer is A. True. A (True) is correct because both PMK (Pairwise Master Key) caching/fast roaming and IEEE 802.11r (Fast BSS Transition) are explicitly designed to reduce the authentication and key exchange overhead that causes delays when a client moves between access points. PMK caching skips…
Question
In WLAN networks, WLAN roaming optimization technologies such as PMK fast roaming and 802.11r fast roaming are all optimized to shorten roaming time.
Options
- ATrue
- BFalse
How the community answered
(31 responses)- A74% (23)
- B26% (8)
Explanation
A (True) is correct because both PMK (Pairwise Master Key) caching/fast roaming and IEEE 802.11r (Fast BSS Transition) are explicitly designed to reduce the authentication and key exchange overhead that causes delays when a client moves between access points. PMK caching skips the full 802.1X/EAP re-authentication by reusing a previously negotiated key, while 802.11r pre-negotiates keys with the target AP before the client even disassociates from the current one - both directly shorten roaming time.
B (False) is wrong because there are no counterexamples here - both named technologies are roaming optimization mechanisms by design and specification, not general-purpose security or throughput features.
Memory tip: Think of PMK and 802.11r as "fast-pass lanes" at a toll booth - PMK lets you reuse a ticket you already paid for, and 802.11r lets you pay the next toll before you even reach it. Both get you through faster. If the question names a WLAN roaming optimization technology, assume its purpose is to shorten roaming time unless told otherwise.
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