Huawei H12-891 Online Practice Questions and Exam Preparation

Huawei H12-891 Online Questions & Answers

• Question 331:

  Which of the following statement about VLAN aggregation is correct? (Choose two)

  A. Sub-VLAN is used to isolate broadcast domains
  B. A Super-VLAN can contain one or more Sub-VLANs
  C. The Super-VLAN contains a physical interface that can establish a Layer 3 VLANIF interface
  D. A Sub-VLAN contains a physical interface that can establish a Layer 3 VLANIF interface
  A. Sub-VLAN is used to isolate broadcast domains
  B. A Super-VLAN can contain one or more Sub-VLANs

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  Explanation

• Question 332:

  Regarding BGP/MPLS IP VPN routing interactions, which of the following description is incorrect?

  A. The ingress PE changes the IPv4 route received by the CE to the VPNv4 route and stores it.
  B. PE is carried out according to different VPN instances. What interacts with the CE is IPv4 routing information.
  C. After receiving the VPNv4 route issued by the ingress PE, the egress PE filters the VPNv4 route according to the RT attribute carried by the route.
  D. The egress PE can send an IPv4 route to the remote CE via BGP, IGP, or static routing.
  D. The egress PE can send an IPv4 route to the remote CE via BGP, IGP, or static routing.

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• Question 333:

  You want to set the DSCP value of VoIP traffic in hardware network devices to EF. According to the differentiated services model RFC, the traffic token EF should be set to:

  A. DSCP is set to decimal 36
  B. IP ToS is set to 0xEF
  C. IP Experimental ECN
  D. DSCP is set to decimal 5
  E. Bitstream 101110
  E. Bitstream 101110

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• Question 334:

  What messages does an NMS (Network Management Station) running SNMPv1 send to the agent?

  A. Trap, Get, Set
  B. Get, Set, GetNext
  C. Get, Set, GetNext, GetBulk
  D. Get, Set, GetBulk
  E. Get, Trap
  B. Get, Set, GetNext

• Question 335:

  As shown in the figure, an engineer is testing network interconnection between two branches.

  Branch 1 uses OSPF on routers R1, R2, and R3.

  Branch 2 uses IS-IS on routers R2, R3, and R4.

  To allow R1 to reach R4's loopback interface address (10.1.4.4/32), which of the following operations must be performed on R2, the mutual border router?

  

  A. Run the default-route-advertise command in both the OSPF and IS-IS views on R2.
  B. No configuration is required.
  C. Run the default-route-advertise command only in the OSPF view on R2.
  D. Run the default-route-advertise command only in the IS-IS view on R2.
  C. Run the default-route-advertise command only in the OSPF view on R2.

• Question 336:

  Router RL runs the OSPF protocol and uses the display ip routing-table command to view Router RL's routing table. The following information about OSPF in the routing table is described correctly as:

  A. In the routing table, the routing table entries identified by the OSPF identifier can only be learned through the 3 types of LSAs.
  B. In the routing table, the 'OSPF' identifier identifies a route table entry that can only pass a Type 1 LSA.
  C. In the routing table, the routing table entries identified with the 'OSPF identifier' can be learned through the 1/2/3/5 LSAs.
  D. In the routing table, route table entries identified with the 'O_ASE' identifier can only be learned through routing introduction.
  D. In the routing table, route table entries identified with the 'O_ASE' identifier can only be learned through routing introduction.

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  Explanation

• Question 337:

  Regarding route policy, which of the following descriptions are correct? (Choose three)

  A. Advanced ACLs can be applied in route-policy to filter routes.
  B. The table entry exceed::0 less-equal 128 indicates that all IPv6 routes are allowed through.
  C. If more than one node is defined in route-policy, at least one node in each node should have a matching pattern of permit.
  D. Route-policy can filter only the default route.
  B. The table entry exceed::0 less-equal 128 indicates that all IPv6 routes are allowed through.
  C. If more than one node is defined in route-policy, at least one node in each node should have a matching pattern of permit.
  D. Route-policy can filter only the default route.

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• Question 338:

  What is the relationship between CIR, BC, and TC?

  A. CIR = TC / BC
  B. CIR = BE / TC
  C. TC = CIR / BC
  D. TC = BC / CIR
  D. TC = BC / CIR

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• Question 339:

  Which of the following descriptions about OSPF virtual links is correct?

  A. A virtual link can be established in any area, and it then belongs to that area.
  B. The virtual link IP is used as the link address.
  C. Virtual links can be used to solve the problem of Area 0 being segmented.
  D. The cost of a virtual link is zero and is considered the optimal link.
  C. Virtual links can be used to solve the problem of Area 0 being segmented.

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  Explanation

• Question 340:

  By default, Huawei firewalls provide the following security zones: (Choose three)

  A. Trust zone
  B. Security zone
  C. Local zone
  D. Untrust Zone
  A. Trust zone
  C. Local zone
  D. Untrust Zone

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  Explanation