H12-311 Online Practice Questions and Answers

Which of the following protocols are IEEE 802.11 standards Select 3 Answers)?

A. 802.11a/b/g/n

B. 802.11i

C. 802.1X

D. 802.11s

An infrastructure-mode network consisting of multiple APs and distributed systems that connect them, also known as what?

A. Basic service set

B. Basic service area

C. Extended service set

D. Extended service area

In WLAN, the AP has been working in a half-duplex state.

A. True

B. False

If the AP works in infrastructure mode, the AP's working state is full-duplex mode.

A. True

B. False

What are the rates that 802.11a can support?

A. 6,12,24,54 Mbps

B. 6,9,12,18,24,36,48,54 Mbps

C. 6,12,18,24,36,48,54 Mbps

D. 6,9,12,18,24,30,36,48,54 Mbps

The AC6605 of the Huawei box-type wireless controller supports 24 PoE interfaces. When the WLAN is connected to the network, it can directly supply power to the AP connected to the AC.

A. True

B. False

AAA is a management framework that is implemented using more common protocols.

A. RADIUS

B. CAPWAP

C. 802.11a/b/g/n

D. 802.1X

CCMP encryption is more secure than TKIP encryption because of its security.

A. Adopt a longer IV

B. Added a key distribution mechanism, no longer using a single key

C. Adopting a more complex encryption algorithm

D. Added a message integrity check mechanism

TKIP encryption is more secure than WEP encryption because (Select 3 Answers).

A. Adopt a longer IV

B. Added a key distribution mechanism, no longer using a single key

C. Adopting a more complex encryption algorithm

D. Using a stronger data verification algorithm

How to deal with the failure of AP and AC version mismatch on a large number of devices.

A. Upgrade the versions to match each other.

B. Replace the AP device.

C. Replace the switch

D. Check if the POE power supply is normal.