Huawei H12-891 Online Practice Questions and Exam Preparation

Huawei H12-891 Online Questions & Answers

• Question 121:

  About multi-instance CE (Multi-VPN-Instance CE, MCE), which of the following descriptions is incorrect?

  A. Users who connect to the same MCE but are not part of a VPN instance cannot access each other
  B. The MCE璓E direction must have multiple physical links to achieve isolation between different VPN instances
  C. MCE-enabled devices can access multiple VPN instances in BGP/MPLS IPVPN applications, reducing user network equipment investment
  D. On the MCE device, you need to create separate routing tables for different VPNs and bind them to the corresponding interfaces
  B. The MCE璓E direction must have multiple physical links to achieve isolation between different VPN instances

• Question 122:

  What are the problems with manually creating static VXLAN tunnels in campus networks? (Choose three)

  A. Although the static VXLAN tunnel mode can support distributed gateway application scenarios, the configuration workload is large and configuration adjustments are complex
  B. For N devices to establish static VXLAN tunnels, you must manually configure up to N(N-1)/2 tunnels, resulting in a large configuration workload
  C. VTEP can only learn remote MAC addresses by relying on data flooding
  D. Static VXLAN tunnels also use related protocols on the control plane, which will cause device resource loss
  A. Although the static VXLAN tunnel mode can support distributed gateway application scenarios, the configuration workload is large and configuration adjustments are complex
  B. For N devices to establish static VXLAN tunnels, you must manually configure up to N(N-1)/2 tunnels, resulting in a large configuration workload
  C. VTEP can only learn remote MAC addresses by relying on data flooding

• Question 123:

  As shown in the figure, what is known about the default routes on R4? Routing Table on R4: display ip routing-table protocol isis Destination/MaskProtoPreCostFlagsNextHopInterface 0.0.0.0/0 ISIS-L115 10 D10.1.24.1GigabitEthernet0/0/1

  0.0.0.0/0 ISIS-L115 10 D10.1.34.1GigabitEthernet0/0/0 172.16.1.2/32 ISIS-L115 10 D10.1.24.1GigabitEthernet0/0/1 172.16.1.3/32 ISIS-L115 10 D10.1.34.1GigabitEthernet0/0/0

  A. Four equal-cost default routes
  B. One default route
  C. Two default routes with different costs
  D. Two equal-cost default routes
  D. Two equal-cost default routes

• Question 124:

  Man-in-the-middle attacks or IP/MAC spoofing attacks can lead to information leakage and other hazards and are more common in the intranet. In order to prevent man-in-the-middle attacks or IP/MAC spoofing attacks, which of the following configuration method can be taken?

  A. Enable DHCP snooping to check the chaddr field in a DHCP request message
  B. onfigure the trusted/untrusted interface
  C. Configure DHCP snooping on the switch to interoperate with DAI or IPSG
  D. Limit the maximum number of MAC addresses allowed to be learned on the switch interface
  C. Configure DHCP snooping on the switch to interoperate with DAI or IPSG

• Question 125:

  In VXLAN scenarios, what features can be turned on to reduce flooding of ARP messages between VTEPs? (Choose two).

  A. Host Information Collection
  B. Local ARP agent
  C. port isolation
  D. ARP broadcast suppression
  B. Local ARP agent
  D. ARP broadcast suppression

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  Explanation

• Question 126:

  In the VXLAN implementation, the mapping relationship between VNI and BD is:

  A. 1:N
  B. N:1
  C. 1:1
  D. N: M
  C. 1:1

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• Question 127:

  A Router-LSA is shown in the figure. Which of the following statements is incorrect?

  

  A. This router supports external routing ingestion
  B. This router is a DR
  C. The Router ID of this router is 10.0.12.1
  D. This router has established an adjacency relationship
  B. This router is a DR

• Question 128:

  A company network runs the OSPF protocol. An engineer performs packet capture to understand OSPF behavior. Which of the following descriptions of OSPF messages is correct? (Choose two)

  A. LSUpdate messages are sent only when an adjacency relationship is established
  B. LSUpdate messages synchronize the link-state database by sending detailed LSA information
  C. The interface sends Hello packets as soon as it joins the OSPF area
  D. When an LSUpdate packet is received, the router must send an LSAck to acknowledge
  B. LSUpdate messages synchronize the link-state database by sending detailed LSA information
  C. The interface sends Hello packets as soon as it joins the OSPF area

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  Explanation

• Question 129:

  iMaster NCE-CampusInsight uses SNMP technology to collect metrics and logs of network devices and detects network exceptions based on real service traffic.

  A. TRUE
  B. FALSE
  A. TRUE

• Question 130:

  On a CloudCampus virtualized campus network, virtual networks are defined based on services. Each virtual network corresponds to a service, and isolation needs to be manually configured between virtual networks.

  A. TRUE
  B. FALSE
  A. TRUE