Huawei H12-891 Online Practice Questions and Exam Preparation

Huawei H12-891 Online Questions & Answers

• Question 611:

  DRAG DROP

  R1 receives a common IPv6 packet from the CE and generates a packet carrying the SRH (Segment Routing Header), as shown in the figure. The packet is forwarded along the path R1, R2, R3, R4. Identify the node type of each device based on their role in SRv6 processing.

  

  Select and Place:

  

  

• Question 612:

  Using ping -a X -c Y -s Z -vpn-instance M 10.5.1.6 2, what is the meaning? (Choose four)

  A. ICMP request for the ping, message size Z (excluding IP and ICMP headers)
  B. The source IP address of the ping packet is X
  C. The ping belongs to VPN instance M
  D. The ping sends Y ICMP requests
  A. ICMP request for the ping, message size Z (excluding IP and ICMP headers)
  B. The source IP address of the ping packet is X
  C. The ping belongs to VPN instance M
  D. The ping sends Y ICMP requests

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  Explanation

• Question 613:

  Which of the following options use an alternate channel to enable communication between IPv6 addresses? (Choose two)

  A. DualStack
  B. 6to4
  C. ISATAP
  D. NAT64
  B. 6to4
  C. ISATAP

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• Question 614:

  FILL IN THE BLANK

  As shown in the figure, a sham link is established between PE1 and PE2 through the loopback interfaces. CE2 can learn the 192.168.1.0/24 route (a direct route on CE1) through both the sham link and the backdoor link. If other parameters use their default settings, the cost of the 192.168.1.0/24 route on CE2 should be _____. (Enter an Arabic numeral without symbols.)

  

  1

• Question 615:

  Which of the following description about the LSP shard extension for IS-IS is correct?

  A. Enables IS routers to generate more LSP shards to carry more IS-IS information.
  B. IS-IS shard extension is equally valid for Hello packets.
  C. Shard scaling for IS-IS is achieved by adding virtual systems, up to 1000 virtual systems.
  D. The IS-IS router can produce a maximum of 1024 shards.
  A. Enables IS routers to generate more LSP shards to carry more IS-IS information.

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  Explanation

• Question 616:

  The Layer 3 logical interface on a VXLAN L3 Gateway that enables communication between different VXLAN virtual networks is?

  A. Layer 2 sub-interface
  B. NVE interface
  C. VBDIF interface
  D. VLANIF interface
  C. VBDIF interface

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  Explanation

• Question 617:

  Which of the following commands are mandatory for configuring an OSPF-based SR-MPLS TE tunnel? (Choose four)

  A. Configure the LSR ID for routers.
  B. Enable segment routing in the OSPF process view.
  C. Enable the opaque capability of OSPF.
  D. Enable MPLS TE in the OSPF process view.
  A. Configure the LSR ID for routers.
  B. Enable segment routing in the OSPF process view.
  C. Enable the opaque capability of OSPF.
  D. Enable MPLS TE in the OSPF process view.

• Question 618:

  As shown in the figure, redundant links are used between the branch and the headquarters to establish an IPsec VPN, with URPF enabled on Router_B for traffic from the branch. Which of the following options is correct? (Choose two) A. When using IPsec active-standby link redundancy with URPF enabled on the physical interface, it is recommended to use URPF loose mode.

  

  B. When using IPsec multilink redundant backup, the URPF function can be enabled on the physical interface, and URPF strict mode can be used.

  C. When using IPsec multilink redundant backups, URPF can be enabled on the tunnel interface, and URPF strict mode can be used.

  D. When using IPsec active-standby link redundancy backup, the URPF function is enabled on the physical interface, and URPF strict mode can be used.

  Correct Answer. AC
  AC

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• Question 619:

  "::1/128" is the IPV6 loopback address.

  A. TRUE
  B. FALSE
  A. TRUE

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  Explanation

• Question 620:

  What are the wrong statements about OSPF's Router LSA and Network LSA? (Choose two)

  A. There must be both Router LSA and Network LSA in the OSPF network
  B. Network LSA carries both topology and routing information
  C. A router running OSPF must produce a Network LSA
  D. A router running OSPF must produce a Router LSA
  A. There must be both Router LSA and Network LSA in the OSPF network
  C. A router running OSPF must produce a Network LSA