Huawei Huawei Certifications H12-224 Questions & Answers

• Question 521:

  Which of the following statements about VRRP fast switchover are true? (Choose three.)

  

  A. When VRRP is used to track a BFD or EFM session, if a tracked BFD or EFM session status changes, the BFD or EFM module notifies the VRRP module of the change. After that, the VRRP module implements a rapid master/backup switchover.

  B. A VRRP backup group can monitor a peer BFD session, a link BFD session, and a normal BFD session at the same time. In addition, it can monitor the interface status.

  C. When the status of a BFD session detected by a VRRP backup group changes, the master/slave switchover of routers in the VRRP backup group occurs by changing priorities of the master and slave routers.

  D. A VRRP backup group can monitor several BFD sessions at the same time. The status changes of these BFD sessions affect each other.

  Correct Answer: ABC

• Question 522:

  Which of the following numbers is the protocol number of VRRP packets?

  A. 112

  B. 113

  C. 114

  D. 115

  Correct Answer: A

• Question 523:

  Traffic shaping usually buffers packets that need to be dropped by traffic policing by means of buffer and token bucket.

  A. True

  B. False

  Correct Answer: A

• Question 524:

  In case of congestion, which of the following indexes will affect QoS? (Choose three.)

  A. Transmission delay

  B. Transmission jitter

  C. Packet loss ratio

  D. Transmission distance

  Correct Answer: ABC

• Question 525:

  BFD detects the link status immediately after a BFD session is set up. If BFD parameters are modified or deleted at one end of the BFD session, the other end will consider such a modification or deletion as a fault and services will be then affected. Therefore, exercise caution when modifying or deleting BFD parameters.

  A. True

  B. False

  Correct Answer: B

• Question 526:

  Which of the following statements are correct regarding VRRP advertisement message?

  A. VRRP has two kinds of advertisement message, one is sent by Master, the other is sent by Slave.

  B. VRRP has one kind of advertisement message which is sent by Master.

  C. VRRP has one kind of advertisement message which is sent by Slave.

  D. VRRP has two kinds of advertisement message, one is used for Master election, the other one is used in stable network after Master election.

  Correct Answer: B

• Question 527:

  Complex traffic classification can be performed based on which of the following packet information? (Choose three.)

  A. Packet priority

  B. Source and destination addresses

  C. Total Length of the Packet

  D. Source and destination port numbers

  Correct Answer: ABD

• Question 528:

  Which of the following queue scheduling technology can achieve better fairness?

  A. WFQ

  B. PQ

  C. CQ

  D. RR

  Correct Answer: A

• Question 529:

  Simple traffic classification in QoS classifies packets based on the 5-tuple information, including the source IP address, source port number, protocol number, destination IP address, and destination port number.

  A. True

  B. False

  Correct Answer: B

• Question 530:

  Which LSA is used by OSPF to implement GR?

  A. Type-3 LSA

  B. Type-5 LSA

  C. Type-9 LSA

  D. Type-10 LSA

  Correct Answer: C