Huawei H12-891 Online Practice Questions and Exam Preparation

Huawei H12-891 Online Questions & Answers

• Question 721:

  If four routers run ISIS and have established an adjacency relationship, and the area code and router rank are marked as shown in the figure, what is the cost value of R4 reaching 10022/32?

  

  A. 10
  B. 20
  C. 30
  D. 40
  C. 30

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  Explanation

• Question 722:

  As shown in the exhibit, all interfaces of the routers have OSPF enabled, and the COST values of the links are shown below. R2's Loopback0 interface is advertised in Area 1. What is the OSPF cost for R1 to reach 10.0.2.2/32?

  

  A. 200
  B. 250
  C. 150
  D. 300
  A. 200

• Question 723:

  Regarding the description of BGP neighbors, which of the following statements is incorrect? (Choose four)

  A. BGP routers support autodiscovery of neighbors.
  B. BGP establishing neighbors must be configured with MD5 authentication.
  C. BGP needs to establish a UDP connection before establishing a neighbor.
  D. BGP requires interaction with link-state information to establish a neighbor relationship.
  A. BGP routers support autodiscovery of neighbors.
  B. BGP establishing neighbors must be configured with MD5 authentication.
  C. BGP needs to establish a UDP connection before establishing a neighbor.
  D. BGP requires interaction with link-state information to establish a neighbor relationship.

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  Explanation

• Question 724:

  As shown in the figure, what routes will R2 learn?

  

  A. R2 can learn the 101.2.0/24 and 101.3.0/24 routes.
  B. R2 can learn the 101.1.0/24 route.
  C. R2 can receive an LSP from R1, but cannot add it to the routing table.
  D. R2 can learn all routes to R1.
  D. R2 can learn all routes to R1.

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• Question 725:

  The default configured switch has an empty MAC address table at this time, and Host A connected to the switch issues the first unicast data frame. What will the switch do after receiving the data frame?

  A. The switch will drop the data frame
  B. The switch records the source MAC address of the data frame and floods the data frame
  C. The switch will forward the data to an interface
  D. Based on the destination MAC address of the data frame, the switch caches the data frame and waits for the destination host to send a response frame before forwarding it
  B. The switch records the source MAC address of the data frame and floods the data frame

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  Explanation

• Question 726:

  Which of the following statements about the OSPFv3 message format is correct? (Choose three)

  A. There is no change in the option field of the Hello message
  B. The Authentication and Auth Type fields are removed
  C. Hello messages no longer contain address information and instead carry the Interface ID
  D. The OSPF version number changed from 2 to 3
  B. The Authentication and Auth Type fields are removed
  C. Hello messages no longer contain address information and instead carry the Interface ID
  D. The OSPF version number changed from 2 to 3

• Question 727:

  LDP messages are exchanged between LSRs running the LDP protocol, and LDP messages can be divided into four types according to function. Which of the following is not an LDP message type?

  A. Advertisement message
  B. Discover message
  C. Conversation message
  D. Label Exchange Information
  D. Label Exchange Information

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  Explanation

• Question 728:

  The DHCP protocol is responsible for assigning various TCP/IP-related parameters to clients. As part of this process, DHCP uses a set of messages that are encapsulated at the transport layer. What is the encapsulation method used by these DHCP messages?

  A. PPP package
  B. IP encapsulation
  C. TCP encapsulation
  D. UDP encapsulation
  D. UDP encapsulation

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• Question 729:

  BGP can only automatically aggregate routes whose source is incomplete.

  A. True
  B. False
  A. True

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  Explanation

• Question 730:

  In an IPv6 network, two nodes A and B are neighbors of each other. If node A sends an NS message to node B, and node B replies with an NA message, then when viewed on node A, what will the neighbor status be marked as?

  A. Reachable
  B. Incomplete
  C. Stale
  D. Probe
  A. Reachable