Huawei H12-891 Online Practice Questions and Exam Preparation

Huawei H12-891 Online Questions & Answers

• Question 411:

  Four routers R1, R2, R3, and R4 run IS, and the IS router type is noted in the diagram. All four routers have an area address of 49001, and looking at the routing table on R1 shows the following results. The reason why R1 did not reach the route of 1034344 is:

  

  A. The routing policy configured on the R1 filters the System-ID of the default route.
  B. R2 conflicts with R3.
  C. R1 and R4 have zone planning errors with the System-ID.
  D. R2 conflicts with R1.
  C. R1 and R4 have zone planning errors with the System-ID.

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• Question 412:

  BGP4+ is running between two routers, and the neighbor relationship is normal, but the BGP routing table on one router does not contain the neighbor's route entry. What could be the reasons? (Choose three)

  A. The route entry in the peer's BGP routing table is non-optimal
  B. The next-hop address of the BGP route entry is unreachable
  C. Peer-ignore is configured on the peer
  D. The peer is configured with active-route-advertise
  A. The route entry in the peer's BGP routing table is non-optimal
  B. The next-hop address of the BGP route entry is unreachable
  D. The peer is configured with active-route-advertise

• Question 413:

  Huawei switches SWA and SWB are connected through 7 Ethernet ports, and static route aggregation is configured. The corresponding ports on switch SWA are E1/0/1, E1/0/2, E1/0/3, E1/0/4, E1/0/5, E1/0/6, and E1/0/7, configured sequentially. Each aggregation group supports only 6 ports. Based on this configuration, which of the following statements is correct?

  A. With the same configuration across ports, the Ethernet 1/0/7 port is the aggregate group's unselected port.
  B. With the same configuration of each port, the Ethernet 1/0/6 port is the aggregate group's unselected port.
  C. With the same configuration of each port, SWA randomly selects one of the 7 ports as the aggregate group's unselected port.
  D. With the same configuration of each port, the Ethernet 1/0/1 port is the aggregation group's unselected port.
  A. With the same configuration across ports, the Ethernet 1/0/7 port is the aggregate group's unselected port.

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  Explanation

• Question 414:

  Which of the following statements regarding RT are correct? (Choose four)

  A. Each VPN instance is associated with one or more pairs of VPN Target attributes, used to control VPN routing information advertisement and reception between sites.
  B. Export Target and Import Target are independent of each other and support multiple values to implement flexible VPN routing information advertisement and reception control.
  C. RTs are classified into two types: Export Target and Import Target.
  D. The RT value is advertised to neighbors through the BGP extended community attribute in Update messages.
  A. Each VPN instance is associated with one or more pairs of VPN Target attributes, used to control VPN routing information advertisement and reception between sites.
  B. Export Target and Import Target are independent of each other and support multiple values to implement flexible VPN routing information advertisement and reception control.
  C. RTs are classified into two types: Export Target and Import Target.
  D. The RT value is advertised to neighbors through the BGP extended community attribute in Update messages.

• Question 415:

  IS-IS supports multi-instance and multi-process. Which of the following statements are correct about IS-IS multi-instance and multi-process? (Choose two)

  A. One IS-IS process can be associated with only one VPN instance.
  B. One VPN instance can be associated with multiple different IS-IS processes.
  C. One IS-IS process can be associated with multiple different VPN instances.
  D. If multiple IS-IS processes are created on an IS-IS router, these processes are independent of each other.
  B. One VPN instance can be associated with multiple different IS-IS processes.
  D. If multiple IS-IS processes are created on an IS-IS router, these processes are independent of each other.

• Question 416:

  gRPC (Google Remote Procedure Call) is a language-neutral, platform-neutral, open-source RPC framework that supports unary RPCs and streaming RPCs. Which of the following service methods are NOT supported by gRPC? (Choose two)

  A. rpc Subscribe(SubsArgs) stream returns (SubsReply) {};
  B. rpc dataPublish(stream serviceArgs) returns (stream serviceArgs) {};
  C. rpc stream LotsOfGreetings(HelloRequest) returns (HelloResponse) {};
  D. rpc Cancel(CancelArgs) returns (CancelReply) {};
  B. rpc dataPublish(stream serviceArgs) returns (stream serviceArgs) {};
  C. rpc stream LotsOfGreetings(HelloRequest) returns (HelloResponse) {};

• Question 417:

  OSPF is a mature protocol and is unlikely to have route computation errors in a regular networking environment under correct configurations. Which of the following statements are correct about the possible causes preventing an OSPF neighbor relationship from entering Full state? (Choose four)

  A. A link works abnormally.
  B. The OSPF network types on both ends of the link are inconsistent.
  C. The router IDs of neighbors are the same.
  D. The OSPF MTU values of interfaces on both ends of the link are different.
  A. A link works abnormally.
  B. The OSPF network types on both ends of the link are inconsistent.
  C. The router IDs of neighbors are the same.
  D. The OSPF MTU values of interfaces on both ends of the link are different.

• Question 418:

  Which of the following statement about IPsec VPN is correct? (Choose two)

  A. Aggressive mode can support NAT traversal, while main mode does not support NAT traversal.
  B. When two routers establish an IPsec VPN in main mode, starting from the 5th message (inclusive), the payload's data is often encrypted.
  C. Two routers establish an IPsec VPN in aggressive mode, so the tunnel is built with a minimum of 4 messages interacting between the two devices.
  D. The two routers can establish an OSPF neighbor relationship through the IPsec VPN channel and exchange intranet routes.
  B. When two routers establish an IPsec VPN in main mode, starting from the 5th message (inclusive), the payload's data is often encrypted.
  D. The two routers can establish an OSPF neighbor relationship through the IPsec VPN channel and exchange intranet routes.

• Question 419:

  The multicast IP address is 229.130.130.1, what is its corresponding MAC address?

  A. 01-00-5E-02-82-01
  B. 01-00-5E-82-82-01
  C. 00-00-5E-02-82-01
  D. 00-00-5E-82-82-01
  A. 01-00-5E-02-82-01

• Question 420:

  In Huawei SD-WAN Solution, which of the following tunneling technologies is used to establish data channels? (Choose two)

  A. WLAN
  B. IPsec
  C. MPLS
  D. GRE over IPsec
  B. IPsec
  D. GRE over IPsec