Huawei H12-891 Online Practice Questions and Exam Preparation

Huawei H12-891 Online Questions & Answers

• Question 111:

  Which of the following about the Router-LSA of OSPFv3 is correct?

  A. The Router-LSA data area contains the Link-Local address
  B. The Router-LSA data area contains the Interface ID of the neighbor on this side
  C. Similar to OSPFv2, the Option field exists in the header of the LSA, not in the data area of the Router-LSA
  D. When LS type = 0x0001 in the header of the LSA, the data area represents a Router-LSA
  B. The Router-LSA data area contains the Interface ID of the neighbor on this side

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• Question 112:

  NSF (Non-Stop Forwarding) and NSR (Non-Stop Routing) are two high-reliability solutions. Which of the following statement is correct?

  A. After NSR is enabled, if the service state backup has not yet completed and a master board failure occurs, NSR cannot take effect
  B. NSR peers require the ability to support NSR through specific message negotiation
  C. After NSF is enabled, when the router performs a switchover, the routing table and forwarding table remain unchanged, so traffic is not lost during GR time
  D. NSF routers do not need to negotiate the ability to support NSF through specific messages
  A. After NSR is enabled, if the service state backup has not yet completed and a master board failure occurs, NSR cannot take effect

• Question 113:

  What mechanisms or techniques can VRRP combine with to monitor uplink connectivity? (Chooose three)

  A. IP-link
  B. BFD
  C. NQA
  D. Interface track
  B. BFD
  C. NQA
  D. Interface track

• Question 114:

  A medium-sized campus network manages the network through the SNMP protocol, and the campus requires a high level of network security. Which version of SNMP is recommended for management?

  A. SNMPv1
  B. SNMPv2c
  C. SNMPv3
  D. All versions can be used
  C. SNMPv3

• Question 115:

  Regarding the OSPFv3 protocol, which of the following descriptions is incorrect?

  A. In the case of sharing a single router, each OSPFv3 process runs independently
  B. In the same OSPFv3 process under the same interface, you can run multiple instances
  C. You can support running multiple instances on a single link
  D. The OSPFv3 message header contains the Instance ID field
  B. In the same OSPFv3 process under the same interface, you can run multiple instances

• Question 116:

  FILL IN THE BLANK

  Huawei Open Programmability System (OPS) uses HTTP methods to access managed objects to manage network devices. HTTP is the most widely used network transmission protocol on the Internet. By default, _____ TCP port number is used.

  80

• Question 117:

  Which of the following may cause the BGP table of a Level-1 RR to overflow, creating a risk of BGP routing table overflow?

  A. ORF
  B. Route Control
  C. Route Aggregation
  D. Setting the same Cluster-ID
  C. Route Aggregation

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• Question 118:

  A campus deploys OSPF to achieve network interoperability, and an engineer configures R2 as shown in the figure. Which of the following descriptions of LSAs in the OSPF network is incorrect?

  

  A. There is no Type 3 LSA flooding within Area 1
  B. There is no Type 3 LSA flooding in Area 2
  C. There is Type 5 LSA flooding within Area 1
  D. Area 2 contains Type 5 LSA advertisements
  A. There is no Type 3 LSA flooding within Area 1

• Question 119:

  What is the relationship between CIR, BC, and TC?

  A. CIR = TC / BC
  B. CIR = BE / TC
  C. TC = CIR / BC
  D. TC = BC / CIR
  D. TC = BC / CIR

• Question 120:

  Because BGP is an EGP routing protocol, BGP routing policies can only be deployed between EBGP neighbors, and routing policies between IBGP neighbors are not valid.

  A. TRUE
  B. FALSE
  B. FALSE

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  Explanation