N10-005 Question #660: Real Exam Question with Answer & Explanation

The correct answer is A: Enable mixed mode. Enabling mixed mode on an 802.11n access point allows it to simultaneously support legacy 802.11b clients alongside newer 802.11n clients.

Question

Kim, a technician, is configuring an 802.11n access point. Other WAPs on the network use 802.11b. Which of the following will Kim have to setup to make sure these WAPs will be able to communicate?

Options

AEnable mixed mode
BDisable SSID
CDisable encryption
DEnable `n' only mode

Explanation

Enabling mixed mode on an 802.11n access point allows it to simultaneously support legacy 802.11b clients alongside newer 802.11n clients.

Common mistakes.

B. Disabling the SSID hides the network name from broadcast discovery but has no effect on whether different 802.11 standard versions can interoperate.
C. Disabling encryption removes security but does not resolve a protocol-version compatibility issue between 802.11b and 802.11n devices.
D. Enabling 'n only' mode does the opposite of what is needed - it would explicitly block 802.11b devices from connecting.

Concept tested. 802.11 mixed mode backward compatibility configuration

Reference. https://www.cisco.com/c/en/us/td/docs/wireless/controller/8-6/config-guide/b_cg86/wireless_network_settings.html

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