Huawei Huawei Certifications H12-224 Questions & Answers

• Question 671:

  

  A. True

  B. False

  Correct Answer: A

• Question 672:

  Which statements about VLAN configuration are true? (Choose two.)

  A. You can enter the VLAN view at the same time you create a VLAN.

  B. If you run undo vlan, the VLAN is invalid, but still exists. You do not need to create the VLAN when you use it next time.

  C. You can configure a character string of VLAN description. The length of the character string is not limited.

  D. If you do not enter the VLAN ID when running the display vlan command, information about all VLANs will be displayed.

  Correct Answer: AD

• Question 673:

  Which of the following statements is not the advantage of STP?

  A. STP can manage the redundant links. When the working link is down, network connectivity can be restored.

  B. STP can prevent loops

  C. STP can prevent broadcast storm

  D. STP can save network bandwidth

  Correct Answer: D

• Question 674:

  RSTP adopts fast convergence mechanism. So, there is no Forward Delay interval in RSTP.

  A. True

  B. False

  Correct Answer: B

• Question 675:

  On an STP network, after the network topology changes, which BPDUs are sent during flooding of topology change information on the entire network?

  A. BPDUs with the TCN flag

  B. BPDUs with the TCA flag

  C. BPDUs with the TC flag

  D. All of the above

  Correct Answer: D

• Question 676:

  According to OSI reference model, Layer 2 LAN switch operates at ( ).

  A. Physical layer

  B. Data link layer

  C. IP layer

  D. Application layer

  Correct Answer: B

• Question 677:

  Which statements about VLAN are true? (Choose three.)

  A. The VLAN improves network security. Users on different VLANs cannot communicate with each other.

  B. The VLAN improves network processing efficiency. Users on different VLANs are separated from each other. Therefore, the size of a broadcast domain is reduced.

  C. Layer 2 forwarding is only based on destination MAC addresses, and is irrelevant to VLAN configuration.

  D. The VLAN technology is a management method that controls the communication between terminals.

  Correct Answer: ABD

• Question 678:

  In STP, BPDU packet is carried by ( ).

  A. IP packet

  B. TCP packet

  C. Ethernet frame

  D. UDP packet

  Correct Answer: C

• Question 679:

  Which statements about VLAN allocation are true? (Choose three.)

  A. The IP subnet VLAN is used to send the packets from the specified network segment or IP address over the specified VLAN.

  B. The MAC address- or IP subnet-based VLAN is valid for only the untagged packets.

  C. The protocol-based VLAN has a higher priority than the IP subnet-based VLAN.

  D. The protocol-based VLAN indicates that service types on the network are bound to VLANs.

  Correct Answer: ABD

• Question 680:

  According to the STP protocol, a certain field in the BPDU identifies the root switch. That is, if the BPDU

  sent by a switch contains this field, this switch is considered as the root switch.

  What is this field?

  A. Root Identifier

  B. Root Path Cost

  C. Bridge Identifier

  D. Port Identifier

  Correct Answer: A