An engineer must speed up the reauthentication delays that are being experienced on the wireless infrastructure by deploying a key-caching mechanism.
Which mechanism must be configured?
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A. B. C. D.B.
The mechanism that should be configured to speed up reauthentication delays in wireless infrastructure by deploying key-caching is "Fast Transition" (FT). Therefore, the correct answer is B.
Fast Transition (FT) is a feature that allows clients to roam from one access point to another without the need for a complete reauthentication. FT caches the Pairwise Master Key (PMK) and generates a new Pairwise Transient Key (PTK) on each roam, which helps to speed up the reauthentication process. When the client roams to a new access point, it uses the cached PMK to authenticate with the new access point and generate a new PTK, which is then used to encrypt the data.
The other options mentioned in the question are:
A. Protected Extensible Authentication Protocol (PEAP): A protocol used to secure wireless networks. PEAP encapsulates the Extensible Authentication Protocol (EAP) within a TLS tunnel, providing secure authentication of wireless clients.
C. Protected Management Frames (PMF): A security feature that protects management frames in 802.11 wireless networks from various attacks, such as spoofing, injection, and replay attacks.
D. Group Temporal Key (GTK) randomization: A security mechanism used to prevent attackers from intercepting and decrypting wireless traffic by frequently changing the GTK used to encrypt multicast and broadcast traffic in a wireless network.
None of these mechanisms are designed to speed up the reauthentication delays, so they are not the correct answers.