Huawei H12-321 Exam Questions
Huawei Certified Network Professional - Wireless Local Area Network- Constructing Enterprise WLAN Architecture (Page 7 )

Updated On: 28-Feb-2026

In the figure, the main lobe width of the directional antenna is 31°. Which are the angles allowed between two MPs? (Multiple Choice)

  1. 20°
  2. 30°
  3. 40°
  4. 60°

Answer(s): A,B



The AP periodically sends Discovery Request messages to check whether the original primary tunnel recovers. If the original primary tunnel recovers, the AP switches STA data back to this tunnel after a delay because this tunnel has a higher priority than the other one. To prevent frequent switchovers caused by network flapping, the AP requests ACs to perform revertive switchover after six Echo intervals, and then sends STA data to the new active AC.

  1. TRUE
  2. FALSE

Answer(s): B



Which are the advantages of Portal authentication over 802.1x authentication? (Multiple Choice)

  1. Portal authentication does not require client software.
  2. Portal authentication is more suitable for temporary access from guests.
  3. Portal authentication is applicable to dumb terminals.
  4. Portal authentication is compatible with MAC bypass authentication.

Answer(s): A,B,D



Smart roaming ensures that each STA can associate with the AP nearest to it. It implements load balance among APs.

  1. TRUE
  2. FALSE

Answer(s): A



As shown in the figure, a 12.2 m high tree is an obstacle on a 10 km point-to-point communication link. The distance between the tree and one of the antennas is 4 km. If the signal transmission frequency is 5.8 GHz, what is the minimum installation height of the receive and transmit antennas based on the following formula and the Fresnei zone radius at the 4 km point?

  1. 16 m
  2. 19 m
  3. 22 m
  4. 26 m

Answer(s): B



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