Huawei H12-891 Online Practice Questions and Exam Preparation

Huawei H12-891 Online Questions & Answers

• Question 261:

  A workstation is connected to an Ethernet switch in the network through a Category 5 cable. The workstation can access the entire network (i.e., full connection) through the switch, but the access rate is much lower than expected. When viewing the switch interface statistics, many ultra-small frames are detected. By reading the statistics of the workstation's network card with software, many FCS and frame alignment errors are found. What is causing these errors?

  A. The rate mismatch between the workstation and the switch
  B. The interface is mismatched to an 802.1Q trunk interface
  C. The line between the workstation and the switch is completely damaged
  D. The operating mode between the workstation and the switch does not match
  E. The network interface card on the workstation is damaged
  D. The operating mode between the workstation and the switch does not match

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• Question 262:

  As shown in the figure, in the context of IPv4 and IPv6, the SEL field in the NET address of IS-IS always takes a value of 00.

  

  A. True
  B. False
  A. True

• Question 263:

  When multiple redundant links exist in an IS-IS network, multiple equal-cost routes may appear. Regarding equal-cost routing in an IS-IS network, which of the following descriptions is incorrect?

  A. When the number of equal-cost routes in the network is greater than the number configured by the command, and these routes have the same priority, the route whose next-hop device has the larger System ID is preferred for load sharing.
  B. After configuring equal-cost route priority, when the IS-IS device forwards traffic to the destination segment, it will not use load sharing but will forward the traffic to the next hop with the highest priority.
  C. For each equal-cost route, you can assign a priority. The route with the highest priority is preferred, and the others serve as backup routes.
  D. If load sharing is configured, traffic is evenly distributed across each link.
  D. If load sharing is configured, traffic is evenly distributed across each link.

• Question 264:

  To implement the traffic filtering function, you can use traffic-filter or MQC. MQC can be used in more views than traffic-filter.

  A. FALSE
  B. TRUE
  B. TRUE

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  Explanation

• Question 265:

  RD is used to distinguish the same IP address in different VPNs. How many bits does the RD contain?

  A. 64
  B. 32
  C. 16
  D. 128
  A. 64

• Question 266:

  Which of the following statements is incorrect about adding devices on a virtualized network deployed using iMaster NCE-Campus?

  A. iMaster NCE-Campus allows users to add devices in batches.
  B. iMaster NCE-Campus allows users to add devices by device role.
  C. iMaster NCE-Campus allows users to add devices by device ESN.
  D. iMaster NCE-Campus allows users to add devices by device model.
  D. iMaster NCE-Campus allows users to add devices by device model.

• Question 267:

  What kind of scenario can use an AS-path filter? (Choose three)

  A. Filter routes received from BGP neighbors based on the AS-PATH attribute the route carries. For example, the command peer x.x.x.x as-path-filter import
  B. The apply clause in route-policy
  C. Filter routes sent to BGP neighbors based on the AS-PATH attribute the route carries. For example, the command peer x.x.x.x as-path-filter export
  D. The if-match clause in route-policy.
  A. Filter routes received from BGP neighbors based on the AS-PATH attribute the route carries. For example, the command peer x.x.x.x as-path-filter import
  C. Filter routes sent to BGP neighbors based on the AS-PATH attribute the route carries. For example, the command peer x.x.x.x as-path-filter export
  D. The if-match clause in route-policy.

• Question 268:

  As shown in the figure, private network routing information is exchanged between PE1/PE2 and their respective CEs via OSPF, and both PE1 and PE2 are configured in the same OSPF area. When routing is introduced from BGP into OSPF on PE2, which types of LSAs may be advertised to CE2? (Choose two)

  

  A. Type 7 LSA
  B. Type 5 LSA
  C. Type 3 LSA
  D. Type 1 LSA
  C. Type 3 LSA
  D. Type 1 LSA

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  Explanation

• Question 269:

  ipv6 link-local addresses can be generated through stateless autoconfiguration

  A. TRUE
  B. FALSE
  B. FALSE

• Question 270:

  Host HW1 in the HW device network wants to join a video conference. What does the host do?

  A. Sends an IGMPv2 membership report as a unicast message to the default router of the local network
  B. Sends a unicast IGMPv2 membership report to the RP
  C. Sends an IGMPv2 membership report over multicast in the local network, and the multicast address carried in the report is the multicast group the host wants to join
  D. Sends an IGMPv2 membership report over multicast in the local network, and the destination multicast address is the “All PIM Routers” 224.0.0.2 multicast address
  C. Sends an IGMPv2 membership report over multicast in the local network, and the multicast address carried in the report is the multicast group the host wants to join

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