Huawei H12-891 Online Practice Questions and Exam Preparation

Huawei H12-891 Online Questions & Answers

• Question 711:

  When configuring AS-Path-Filter, ip as-path-filter 10 permit _100$ indicates a matching route received from AS100 but not from AS100.

  A. TRUE
  B. FALSE
  B. FALSE

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  Explanation

• Question 712:

  A 32-bit MPLS header consists of a 20-bit label used for packet forwarding, a 3-bit EXP field that identifies the IP packet priority, a 1-bit bottom-of-stack flag that identifies the last label, and an 8-bit TTL field. Which statement regarding the TTL field is correct?

  A. This field is used to control the upstream device in label distribution.
  B. This field is used for label management.
  C. This field limits the LSR.
  D. This field is used to prevent packet forwarding loops, similar to the TTL field in an IP header.
  D. This field is used to prevent packet forwarding loops, similar to the TTL field in an IP header.

• Question 713:

  When configuring ISIS zone authentication, which ISIS message will carry the authentication data?

  A. ISIS Level-1 SNP LSP
  B. ISIS Level-2 SNP LSP
  C. Hello message of ISIS Level-1
  D. Hello message of ISIS Level-2
  A. ISIS Level-1 SNP LSP

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• Question 714:

  Which of the following statements regarding OSPF neighbor relationship faults is incorrect?

  A. For non-DR and non-BDR routers on an Ethernet link, the 2-Way state is acceptable.
  B. The Init state indicates that the router has received Hello packets from its neighbors, but the received Hello packets do not contain the OSPF RID of the receiving router.
  C. The ExStart state indicates that two neighbor routers have inconsistent MTUs or the same OSPF Router ID (RID).
  D. The Attempt state indicates that the router does not send unicast Hello packets to configured neighbors.
  D. The Attempt state indicates that the router does not send unicast Hello packets to configured neighbors.

• Question 715:

  As shown in the figure, a company wants to achieve secure mutual access between the head office and branches through MPLS VPN. At the same time, the company requires that the branch office's IPN traffic must be forwarded through the head office to achieve traffic monitoring.

  

  A. VPN routing information can be exchanged between the CE and PE using BGP.
  B. When Hub-CE exchanges routing information with Hub-PE, a route policy must be configured on Hub-PE to allow the received AS number to be repeated once so that Hub-CE-advertised routes can be accepted.
  C. Between Hub-CE and Hub-PE, and between Spoke-PE and Spoke-CE, routing information can be exchanged using the OSPF protocol.
  D. An MP-IBGP peer relationship is established between Spoke-PE devices, and VPN routing information is exchanged.
  D. An MP-IBGP peer relationship is established between Spoke-PE devices, and VPN routing information is exchanged.

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• Question 716:

  Node segments in SR-MPLS must be manually configured.

  A. TRUE
  B. FALSE
  B. FALSE

• Question 717:

  In the laboratory network, the network is built according to the following topology diagram. SW1 uses the default configuration, and SW2 has the STP function disabled. Which of the following statements about the STP port states is correct?

  

  A. SW1 G0/0/2 enters the Discarding state
  B. SW2 G0/0/1 enters the Discarding state
  C. SW2 G0/0/2 enters the Discarding state
  D. No interface enters the blocking state
  E. SW1 G0/0/1 enters the Discarding state
  D. No interface enters the blocking state

• Question 718:

  VLAN-based MAC address flapping detection is configured. If MAC address flapping occurs, actions to be taken on an interface can be configured as required. Which of the following actions cannot be configured?

  A. Traffic filtering
  B. Alarm sending
  C. MAC address blocking
  D. Interface blocking
  A. Traffic filtering

• Question 719:

  In DU label advertisement mode, if the liberal label retention mode is used, the device reserves labels received from all the LDP peers regardless of whether the LDP peer is the optimal next hop for reaching the destination network.

  A. TRUE
  B. FALSE
  A. TRUE

• Question 720:

  What can be determined from the following figure?

  A. R3 must be a Level-2 device.
  B. The device role of R3 cannot be determined.
  C. R3 must be a Level-1-2 device.
  D. R3 must be a Level-1 device.
  C. R3 must be a Level-1-2 device.