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Out of the given options, which one would give the highest level of confidentiality for a wireless network?
WPA2
WEP
MAC filtering
Disable SSID broadcast
WPA2 with a strong password would give the strongest possible security. WEP can be cracked easily using known techniques. Disabling SSID broadcast still leaks the SSID name in certain packets. Mac filtering can be defeated using MAC filtering.
This question needs to be adjusted to make better sense to the answer. WPA2 is the highest level of security, but disabling the SSID gives confidentiality... --- No it doesn't. As stated prior, disabling SSID does not prevent unauthorized users from being able to discover a SSID. The beacons are still sent, however the SSID field is set to NULL. An individual can still learn the SSID when another client is connecting. This can be done through being patient, or by spoofing a deauthentication frame coming from the client.
On the other hand, data transferred via WPA2 is encrypted.
Encryption = Confidentiality.
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