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Confidentiality of the data transmitted in a wireless LAN is BEST protected if the session is:

restricted to predefined MAC addresses.

encrypted using static keys.

encrypted using dynamic keys.

initiated from devices that have encrypted storage.

When using dynamic keys, the encryption key is changed frequently, thus reducing the risk of the
key being compromised and the message being decrypted. Limiting the number of devices that can
access the network does not address the issue of encrypting the session. Encryption with static
keys-using the same key for a long period of time-risks that the key would be compromised.
Encryption of the data on the connected device (laptop, PDA, etc.) addresses the confidentiality of
the data on the device, not the wireless session.

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