Huawei Huawei Certifications H12-224 Questions & Answers

• Question 151:

  Huawei switches provide port isolation. Which of the following statements regarding port isolation is false?

  A. You can configure Layer 2 and Layer 3 isolation or Layer 2 isolation and Layer 3 interworking.

  B. Huawei switches support 64 isolation groups numbered 0 to 63.

  C. If interface A is isolated from interface B, packets sent from interface A cannot reach interface B, but packets sent from interface can reach interface A.

  D. FE interfaces, GE interfaces, XGE interfaces, and Eth-Trunks can be isolated from one another, but an interface cannot be isolated from itself or from the management interface unidirectionally. In addition, an Eth-Trunk cannot be isolated unidirectionally from its member interfaces.

  Correct Answer: C

• Question 152:

  Which of the following statements regarding MUX VLAN is true?

  A. The MUX VLAN contains a principal VLAN and subordinate VLANs. The principal VLAN and subordinate VLANs cannot communicate.

  B. The MUX VLAN contains a principal VLAN and subordinate VLANs. The subordinate VLANs are classified into subordinate separate VLANs and subordinate group VLANs. The interfaces in the subordinate group VLAN can communicate with each other.

  C. The interfaces between subordinate separate VLANs can communicate with each other, but cannot communicate with the interfaces in the principal VLAN.

  D. The principal VLAN and subordinate VLANs cannot communicate.

  Correct Answer: B

• Question 153:

  Which of the following statements regarding preemption in static LACP mode are true? (Choose all that apply.)

  A. Preemption in static LACP mode is enabled by default.

  B. When a high-priority interface switches to the inactive interface due to a fault and then is restored, if preemption is enabled, the restored high-priority interface becomes the active interface after a delay. If preemption is disabled, the interface cannot become the active interface.

  C. To prevent unstable transmission due to frequent link status changes, can set a preemption delay.

  D. If the preemption delays at both ends are different, the larger preemption delay is used.

  Correct Answer: BCD

• Question 154:

  Which of the following statements regarding LACP are true? (Choose all that apply.)

  A. LACP is based on IEEE802.3au.

  B. The local device sends LACPDUs to exchange information with the remote end.

  C. Devices at both ends determine the Active side based on the LACP system priority and system ID.

  D. Devices at both ends determine active interfaces based on the LACP priority and ID of the interface on the passive side.

  Correct Answer: BC

• Question 155:

  Which of the following statements regarding routing policy and policy-based routing are true? (Choose all that apply.)

  A. Policy-based routing is used to control packet forwarding without following routes in the routing table.

  B. A routing policy is used to control import, advertisement, and receiving of routing information.

  C. A routing policy is used to control packet forwarding without following routes in the routing table.

  D. Policy-based routing is used to control import, advertisement, and receiving of routing information.

  Correct Answer: AB

• Question 156:

  The first four bits of a multicast IP address are fixed as 1110 and are mapped to the most significant 25 bits of a multicast MAC address.

  Among the last 28 bits of a multicast IP address, only 23 bits are mapped to a multicast MAC address, and information about the other 5 bits is lost. As a result, 32 multicast IP addresses are mapped to the same MAC address.

  A. TRUE

  B. FALSE

  Correct Answer: A

• Question 157:

  IGMP Snooping runs on the data link layer to manage and control multicast groups and prevents multicast packets on Layer 3 broadcasts.

  A. TRUE

  B. FALSE

  Correct Answer: A

• Question 158:

  Which of the following route selection tools can be used by other routing protocols in addition to BGP? (Choose all that apply.)

  A. route-policy

  B. IP-prefix

  C. as-path-filter

  D. community-filter

  Correct Answer: AB

• Question 159:

  When the Hold Time parameter negotiated between two BGP peers is 0, no Keepalive messages will be sent.

  A. TRUE

  B. FALSE

  Correct Answer: A

• Question 160:

  Which of the following statements regarding BGP message types and characteristics is false?

  A. Open messages are used to establish a peer relationship between two neighbors.

  B. Hello messages are periodically sent between BGP peers to maintain their connection.

  C. Update messages are used to exchange routing information between BGP peers.

  D. Notification messages are used to transmit error information between BGP Speakers.

  E. Route-refresh messages are used by a BGP device to notify its peer that it has the route refresh capability.

  Correct Answer: E