Huawei H12-321 Online Practice Questions and Exam Preparation

Huawei H12-321 Online Questions & Answers

• Question 261:

  Which of the following statements about the first Fresnel zone is FALSE?

  A. The first Fresnel zone affects RF communication integrity even though it is partially blocked.
  B. The first Fresnel zone makes RF signals diffract or bend even through it is blocked.
  C. Signal diffraction reduces RF energy received by antennas or even interrupts the communication link.
  D. Under any circumstances, the proportion of the area blocked by obstacles in the first Fresnel zone cannot exceed 60%.
  D. Under any circumstances, the proportion of the area blocked by obstacles in the first Fresnel zone cannot exceed 60%.

• Question 262:

  Regarding the description of roaming, is the following statement correct?

  A. STA roaming refers to the process in which a STA switches from one AP to another.
  B. The IP addresses of STAs in Layer 2 and Layer 3 roaming will not change.
  C. In order to achieve roaming between two APs, the models of the two APs need to be the same.
  D. When the AC receives the association/re-association request, it should be treated as a roaming user as long as it finds that the current user entry already exists.
  A. STA roaming refers to the process in which a STA switches from one AP to another.
  B. The IP addresses of STAs in Layer 2 and Layer 3 roaming will not change.
  D. When the AC receives the association/re-association request, it should be treated as a roaming user as long as it finds that the current user entry already exists.

• Question 263:

  Which statements about Layer 2 and Layer 3 roaming are TRUE? (Multiple Choice)

  A. After Layer 3 roaming is performed, the VLAN IDs in the service set of APs are changed.
  B. If the VLAN IDs before and after roaming are the same, the STA roams at Layer 2.
  C. Layer 2 roaming indicates that STAs roam within the same subnet.
  D. Layer 3 roaming indicates that STAs roam between different subnets.
  A. After Layer 3 roaming is performed, the VLAN IDs in the service set of APs are changed.
  C. Layer 2 roaming indicates that STAs roam within the same subnet.
  D. Layer 3 roaming indicates that STAs roam between different subnets.

• Question 264:

  Which of the following statements about the second Fresnel zone are TRUE? (Multiple Choice)

  A. If the RF signal and primary signal have the same frequency and different phases and the two signals intersect, the RF signal weakens or even offsets the primary signal. Because reflection is one of the factors causing interference to the primary signal, impact of the second Fresnel zone on signals must be considered during evaluation of point-to-point communication links.
  B. If signals in the second Fresnel zone are reflected to the receive end due to the antenna height and terrain, the link quality may degrade.
  C. Impact of the second Fresnel zone should be considered during network planning and troubleshooting, especially in flat and dry environments (such as deserts).
  D. The second Fresnel zone is surrounded by the first Fresnel zone.
  A. If the RF signal and primary signal have the same frequency and different phases and the two signals intersect, the RF signal weakens or even offsets the primary signal. Because reflection is one of the factors causing interference to the primary signal, impact of the second Fresnel zone on signals must be considered during evaluation of point-to-point communication links.
  B. If signals in the second Fresnel zone are reflected to the receive end due to the antenna height and terrain, the link quality may degrade.
  C. Impact of the second Fresnel zone should be considered during network planning and troubleshooting, especially in flat and dry environments (such as deserts).

• Question 265:

  What is wrong about the description of the business VAP below?

  A. Provide wireless terminal access
  B. Establish MESH connection establishment
  C. Each RF can be configured in multiples, and the number is not limited.
  D. Each RF can be configured with only one
  B. Establish MESH connection establishment
  C. Each RF can be configured in multiples, and the number is not limited.
  D. Each RF can be configured with only one

• Question 266:

  What is the effect after the roaming aggressiveness of the wireless network adapter on a computer is set to a larger value?

  A. The user's network access rate is increased.
  B. The switching between APs is speeded up.
  C. The switching between SSIDs is speeded up.
  D. Wireless network adapter's activeness for automatic network selection is lowered.
  B. The switching between APs is speeded up.

• Question 267:

  What is the correct description of load balancing between dual frequencies?

  A. When the load difference between the 5G and 2.4G radios is within the equalization threshold, the AP will direct the terminal to associate with the 5G.
  B. When the load on the 5G radio exceeds 2.4G at the equalization threshold, the AP will direct the terminal to associate with 2.4G.
  C. When the load on the 5G radio exceeds 2.4G in the equalization threshold, if the terminal is associated with 5G, the AP will always reject the terminal association until the terminal associates 2.4G.
  D. If the load balancing difference threshold is set to 10, it means that if the number of terminals on the 5G radio exceeds more than 10 of the 2.4G radio, the load between the two frequencies is considered to be unbalanced.
  A. When the load difference between the 5G and 2.4G radios is within the equalization threshold, the AP will direct the terminal to associate with the 5G.
  B. When the load on the 5G radio exceeds 2.4G at the equalization threshold, the AP will direct the terminal to associate with 2.4G.

• Question 268:

  This figure shows the WIDS attack detection process. After the dynamic blacklist is delivered to an AP, how does the AP process different data traffic during the punish period?

  

  A. Forward normal data traffic and drop attack traffic
  B. Drop normal data traffic and send attack traffic to the AC
  C. Forward normal data traffic and send attack traffic to the AC
  D. Drop normal data traffic and attack traffic
  D. Drop normal data traffic and attack traffic

• Question 269:

  In the load balancing mode, what is the correct way for each server to handle hot standby?

  A. The DHCP server does not automatically associate with the relay on the device. The server will send dhcp request packets to the device.
  B. The DHCP server and the relay on the device can be adaptively linked. The server does not actively send protocol packets to the device.
  C. The RADIUS/Portal Server does not need to configure the IP address of the peer device, and the server does not actively send COA/DM or Portal logoff packets to the device.
  D. The RADIUS/Portal Server needs to be configured with the IP address of the peer device, and the server will send the COA/DM or Portal logoff packets to the device.
  B. The DHCP server and the relay on the device can be adaptively linked. The server does not actively send protocol packets to the device.
  D. The RADIUS/Portal Server needs to be configured with the IP address of the peer device, and the server will send the COA/DM or Portal logoff packets to the device.

• Question 270:

  Regarding the default configuration of the common parameters of dual-link cold backup, the following statement is correct?

  A. AC global priority is 0
  B. AC personality priority is 0
  C. Dual link backup and failback is not enabled
  D. Dual link backup function enabled
  A. AC global priority is 0