Huawei H12-891 Online Practice Questions and Exam Preparation

Huawei H12-891 Online Questions & Answers

• Question 731:

  Router R1 runs the OSPF protocol. When you use the "display ip routing-table" command to view the routing table of router R1, which of the following statements correctly describes the information related to OSPF in the routing table?

  A. In the routing table, route table entries identified by the "OSPF" identifier can only be learned through LSAs of Type 3.
  B. In the routing table, the routing table entries identified by the "OSPF" identifier can only pass Class 1 LSA.
  C. In the routing table, the routing table entries identified by the "OSPF" identifier can be learned through the 1/2/3/5 LSA.
  D. In the routing table, the routing table entry identified with the "O_ASE" identifier can only be learned by routing introduction.
  D. In the routing table, the routing table entry identified with the "O_ASE" identifier can only be learned by routing introduction.

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  Explanation

• Question 732:

  During the LDP session setup process, the active party first sends the initialization information to negotiate the parameters. If the passive party does not accept the negotiated parameters, which of the following messages will be sent?

  A. Hello Message
  B. Error Notification Message
  C. Keepalive Message
  D. Initialization Message
  B. Error Notification Message

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• Question 733:

  Router HW enables OSPF and acts as an ABR. It is configured with abr-summary. Which types of LSAs will be aggregated? (Choose two)

  A. 1 LSA
  B. 2 LSA
  C. 3 LSA
  D. 4 LSA
  E. 5 LSA
  A. 1 LSA
  B. 2 LSA

• Question 734:

  What messages does an NMS (Network Management Station) running SNMPv1 send to the agent?

  A. Trap, Get, Set
  B. Get, Set, GetNext
  C. Get, Set, GetNext, GetBulk
  D. Get, Set, GetBulk
  E. Trap
  B. Get, Set, GetNext

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  Explanation

• Question 735:

  To prevent hackers from attacking user devices or networks using MAC addresses, you can configure MAC addresses of untrusted users as blackhole MAC addresses to filter out such invalid MAC addresses. When receiving a packet whose source or destination MAC address is a blackhole MAC address on a device, the device discards the packet.

  A. TRUE
  B. FALSE
  A. TRUE

• Question 736:

  In an HW IP multicast network, which of the following multicast features are associated with (*, G) table entries? (Choose three)

  A. Dense mode
  B. Source tree
  C. Sparse mode
  D. PIM bidirectional
  E. Shared tree
  F. Dense tree
  C. Sparse mode
  D. PIM bidirectional
  E. Shared tree

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• Question 737:

  New IS-IS TLVs are used to carry IPv6 addresses and reachability information to support IPv6 route processing and calculation.

  A. TRUE
  B. FALSE
  A. TRUE

• Question 738:

  For Layer 2 VPN technology, which of the following statements are correct? (Choose two)

  A. VPLS is a widely used technology in live networks, which can provide transparent transmission of Layer 3 packets and achieve multipoint access.
  B. The VPLS configuration is complex, and the Layer 2 network transmits BUM packets.
  C. BGP EVPN supports features such as tenant isolation, multi-homing, and broadcast suppression.
  D. BGP EVPN addresses issues such as MAC address drift and multi-tenancy that VPLS cannot support.
  B. The VPLS configuration is complex, and the Layer 2 network transmits BUM packets.
  C. BGP EVPN supports features such as tenant isolation, multi-homing, and broadcast suppression.

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• Question 739:

  The topology diagram and device configurations are shown below. It is required that the route entry 100.33.0.0/32 does not appear in the routing table of R1. Which of the following configuration methods can achieve this requirement? (Choose two)

  

  A. Configure route summarization on R3 to summarize the routes into 100.0.0.0/16.
  B. Configure route summarization on R2 to summarize the routes into 100.0.0.0/16.
  C. Configure a filter-policy on R1 using an ACL that matches 100.33.0.0/32, and apply it in the import direction.
  D. Configure a filter-policy using an ACL that matches 100.33.0.0/32, and apply it in the export direction.
  A. Configure route summarization on R3 to summarize the routes into 100.0.0.0/16.
  C. Configure a filter-policy on R1 using an ACL that matches 100.33.0.0/32, and apply it in the import direction.

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• Question 740:

  The RSTP protocol provides a variety of protection functions. When an edge port is configured as a protected state, how does the edge port process received BPDU packets?

  A. Directly discard the BPDU packet
  B. Close the port
  C. After parsing the BPDU message, obtain the relevant information
  D. Forward BPDU packets as required
  B. Close the port

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  Explanation