Huawei H12-321 Online Practice Questions and Exam Preparation

Huawei H12-321 Online Questions & Answers

• Question 11:

  On a WLAN network with the WIDS function enabled, APs with the following SSIDs are detected:

  a [ssidl]

  b [ssidl]

  c [ssidl]

  d [ssid2]

  e [ssid2]

  f [ssidl]

  MAC addresses of APs b and c are included in the MAC address whitelist. ssid2 is included in the SSID whitelist.

  Which of these APs will be identified as rogue APs?

  (Multiple Choice)

  A. a
  B. b
  C. c
  D. d
  E. f
  A. a
  E. f

• Question 12:

  Taking 5GHz as an example, if the transmitting and receiving antennas are separated by 1km, the radius of the Fresnel zone is roughly?

  A. 2.4m
  B. 3.6m
  C. 5.6m
  D. 6.2m
  B. 3.6m

• Question 13:

  Which of the following statements about power adjustment is FALSE?

  A. An AP's transmit power determines its radio coverage area. APs with higher power have larger coverage areas.
  B. The global radio calibration algorithm includes the Dynamic Channel Allocation (DCA) algorithm and Transmit Power Control (IPC) algorithm.
  C. A traditional method to control the radio power is to set the transmit power to the maximum value to maximize the radio coverage area. However, a high transmit power may cause interference to other wireless devices.
  D. During dynamic power adjustment, it is necessary to select an optimal power to balance the signal coverage with system capacity.
  B. The global radio calibration algorithm includes the Dynamic Channel Allocation (DCA) algorithm and Transmit Power Control (IPC) algorithm.

• Question 14:

  What is the protection time for blind handover in smart roaming?

  A. 20 minutes
  B. 30 minutes
  C. 60 minutes
  D. 15 minutes
  B. 30 minutes

• Question 15:

  In a WLAN network that enables flood attack detection, the AP detects flooding attacks by detecting which of the following items.

  A. Number of access terminals of the AP
  B. The frequency of the uplink and the line of the terminal on the AP
  C. The number of times the terminal attempts to log in on the AP.
  D. Traffic size of the STA on the AP
  D. Traffic size of the STA on the AP

• Question 16:

  The following statement about N+1 backup is correct?

  A. The model and software version of the active and standby ACs must be identical.
  B. The configuration of the active and standby AC products can be different. Only the software version of the AC must be consistent.
  C. A standby AC can provide backup services for multiple primary ACs, reducing the cost of purchasing equipment, and the reliability is higher than VRRP hot backup.
  D. N+1 backup is a cold backup, backing up AP information and STA information.
  B. The configuration of the active and standby AC products can be different. Only the software version of the AC must be consistent.

• Question 17:

  In long-distance point-to-point communication over WLAN, if a stable communication link is to be maintained, what percentage of the first Fresnel area can't be blocked?

  A. 0.2
  B. 0.4
  C. 0.5
  D. 0.6
  B. 0.4

• Question 18:

  As shown in the figure, what is the correct label for the Fresnel area?

  A. a
  B. b
  C. c
  D. d
  A. a
  C. c

• Question 19:

  On a WLAN network, which of the following attacks will trigger alarms? (Multiple Choice)

  A. Flooding attack
  B. Spoofing attack
  C. Weak IV attack
  D. Brute force
  A. Flooding attack
  B. Spoofing attack

• Question 20:

  The Agile Controller must sub-group the devices to facilitate the delivery of rules.

  A. Correct
  B. False
  B. False