Huawei H12-891 Online Practice Questions and Exam Preparation

Huawei H12-891 Online Questions & Answers

• Question 181:

  The following topology diagram is available, and it is correct to analyze the following statement accordingly: A. There are route entries for 10.0.2.2/32 and 10.0.0.0/16 in the IP routing table for R1

  

  B. R1's IP routing table has both 10.0.3.3/32 and 10.0.0.0/16 route entries

  C. Because R2 performs route aggregation, R1 only has the 10.0.0.0/16 route entry in its IP routing table

  D. There are route entries for 10.0.2.2/32 and 10.0.3.3/32 in the IP routing table for R1

  Correct Answer. B
  B

• Question 182:

  During the implementation of iMaster NCE-Campus Wi-Fi location-based services (LBS), terminal location data is sent to an LBS platform through HTTP requests. Which of the following data formats is used in such HTTP requests?

  A. XML
  B. HTML
  C. JSON
  D. YAML
  C. JSON

• Question 183:

  The rules for Route Reflectors (RR) to publish routes override the traditional rules of horizontal segmentation in IBGP, which can potentially cause loops within the Autonomous System (AS). Which routing attributes does an RR use to prevent loops? (Choose two)

  A. Next Hop
  B. Originator ID
  C. AS-PATH
  D. Cluster List
  B. Originator ID
  D. Cluster List

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  Explanation

• Question 184:

  OSPF is deployed on a campus network to implement network interconnection. The LSDB of R2 is shown in the exhibit.

  

  What can be determined from the LSDB? (Choose two)

  A. Area 1 is an NSSA.
  B. R2 translates the Type 7 default route into a Type 5 default route.
  C. R2 advertises the default route in the OSPF process.
  D. Area 1 does not have Type 3 LSAs. The possible cause is that R2 filters Type 3 LSAs in the outbound direction of Area 1.
  A. Area 1 is an NSSA.
  B. R2 translates the Type 7 default route into a Type 5 default route.

• Question 185:

  Among the routing policy tools commonly used by BGP, which ones can be used to filter routes? (Choose three)

  A. filter-policy
  B. route-policy
  C. ip extcommunity-filter
  D. traffic-policy
  A. filter-policy
  B. route-policy
  C. ip extcommunity-filter

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  Explanation

• Question 186:

  There is an existing network of router R1, router R2, router R3, and router R4. The four routers are interconnected through a LAN network, and all four routers are running basic OSPF. When you execute the command display ospf peer on router R2, you discover that the state between router R2 and router R3 is 2-Way. What conclusions can you draw from this output? (Choose three)

  A. Router R2 is not a DR
  B. Router R3 is not a DR, nor is it a BDR
  C. There is no full adjacency between router R2 and router R3
  D. Router R4 is destined for DR
  E. Router R2 is DR or BDR
  A. Router R2 is not a DR
  B. Router R3 is not a DR, nor is it a BDR
  C. There is no full adjacency between router R2 and router R3

• Question 187:

  Regarding the Stub area in the OSPF protocol, which of the following statements are correct? (Choose four)

  A. Virtual connections cannot traverse the Stub area
  B. Backbone areas cannot be configured as Stub areas
  C. An ASBR cannot exist in a Stub area
  D. Type 7 LSA injection is not allowed in a Stub area
  A. Virtual connections cannot traverse the Stub area
  B. Backbone areas cannot be configured as Stub areas
  C. An ASBR cannot exist in a Stub area
  D. Type 7 LSA injection is not allowed in a Stub area

• Question 188:

  What designs in the router can improve the reliability of the router? (Choose two)

  A. Dual power supply design
  B. Module hot-swappable design
  C. ISSU Design
  D. Dual-engine design
  A. Dual power supply design
  D. Dual-engine design

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  Explanation

• Question 189:

  The command ip as-path-filter as-path-filter-number (deny|permit) regular-expression is used to configure an AS-path-filter. In this command, multiple clauses can form an AS-path-filter statement. What is the relationship between these clauses?

  A. Routes match in order. When a route matches a clause, it is no longer matched downward
  B. and relationships
  C. or relationships
  D. Routes match in order and routes need to match all sub-clauses
  A. Routes match in order. When a route matches a clause, it is no longer matched downward

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• Question 190:

  In an MPLS IBGP VPN environment, if tags are distributed only through BGP, LDP, the MPLS tags for a message can be up to two layers of tags.

  A. True
  B. False
  A. True