Huawei Huawei Certifications H12-311 Questions & Answers

• Question 81:

  The Int-Serv model provides users with end-to-end absolute QoS guarantees, but the reason for the lack of successful large-scale commercial use is.

  A. Limited bandwidth reservation

  B. Low forwarding efficiency

  C. Poor scalability

  D. Not conducive to traffic regulation

  Correct Answer: C

• Question 82:

  Which of the following are related parameters of the Traffic template (Select 2 Answers).

  A. 802.3 Priority Mapping Policy

  B. CAC Policy

  C. Tunnel priority mapping strategy

  D. ACK strategy

  Correct Answer: AC

• Question 83:

  When an 802.11 packet sent by a STA enters the Ethernet through the AP, it is converted into an 802.3 packet, which is not a priority mapping method.

  A. No priority mapping

  B. Different priorities according to different VAP settings

  C. According to the order in which the packets arrive at the AP

  D. Map the priorities according to UP.

  Correct Answer: C

• Question 84:

  Among the following options, it is not the main purpose of roaming.

  A. Avoid excessive authentication time during roaming, resulting in packet loss or even service interruption.

  B. Ensure user authorization information remains unchanged.

  C. Ensure that the user's IP address is unchanged.

  D. Ensure that the user's network rate is unchanged.

  Correct Answer: D

• Question 85:

  Regarding the characteristics of Huawei WLAN products, the following statement is correct.

  A. Wireless controller can achieve high availability through stacking

  B. Huawei's AP radio tuning function is divided into global tuning and local tuning. The local tuning is done by the AP independently.

  C. The switching threshold of WLAN load balancing has two configurations based on the number of users and the number of sessions.

  D. After the dual-link backup configuration, if the user adopts the tunnel forwarding mode, the active service will not be interrupted even if the active AC fails.

  Correct Answer: C

• Question 86:

  The following is an incorrect way to refer to AP access control (Select 2 Answers).

  A. By default, the access control mode of the AP to the AC is not authenticated.

  B. By configuring the AP in the offline state, authentication is required to automatically access the AP.

  C. The configuration whitelist can be authenticated based on the MAC or authenticated based on the SN.

  D. If the AP access control adopts MAC authentication, the AP outside the MAC authentication list can also be online after being manually confirmed.

  Correct Answer: AB

• Question 87:

  Among the following options, is the reason for using 5G priority access.

  A. 5G frequency band is easier to network planning

  B. 5G frequency band can provide better access capacity and capacity The connection speed between the user and the AP is fast in the

  C. 5G frequency band. The transmission rate of the

  D. 5G frequency band is higher than the 2.4G frequency band.

  Correct Answer: B

• Question 88:

  There are many video conferences in large companies, and QoS generally adopts the service model.

  A. Best Effort model

  B. IntServ model

  C. FIFO model

  D. DiffServ model

  Correct Answer: C

• Question 89:

  Which of the following options are EDCA parameters (Select 2 Answers)?

  A. AIFSN

  B. SIFS

  C. DIFS

  D. TXOPLimit

  Correct Answer: AD

• Question 90:

  The conditions for switching triggers are generally set (Select 2 Answers).

  A. Start the switch after the STA reaches a certain distance from the original AP.

  B. Set the signal strength ratio between the current AP and the neighbor AP, and switch to the threshold.

  C. Check the packet loss rate and start switching when the packet loss rate reaches a certain value.

  D. Start the switch when the network speed is very slow when it is associated with the original AP.

  Correct Answer: BC