Huawei H12-891 Online Practice Questions and Exam Preparation

Huawei H12-891 Online Questions & Answers

• Question 371:

  If you have a local area network running 802.1D Spanning Tree Protocol, the non-root switch does not receive which parameter from the root switch?

  A. MaxAge
  B. Root cost
  C. Forward delay
  D. Hold time
  E. Hello time
  D. Hold time

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• Question 372:

  An OandM platform mainly provides unified monitoring and performance management for network devices. Which of the following is NOT device monitoring data?

  A. Management-plane data
  B. Data-plane data
  C. Control-plane data
  D. Monitoring-plane data
  D. Monitoring-plane data

• Question 373:

  What are the following statements about 802.1X, RADIUS, and HWTACACS authentication? (Choose two)

  A. Users can use 802.1X authentication to access the network and complete identity authentication through RADIUS.
  B. RADIUS authentication and HWTACACS authentication are mutually exclusive and cannot be used as two-factor authentication for the same user at the same time.
  C. RADIUS authentication and HWTACACS authentication can perform two-factor authentication for the same user at the same time, which is more secure.
  D. RADIUS authentication is mutually exclusive with 802.1X authentication.
  A. Users can use 802.1X authentication to access the network and complete identity authentication through RADIUS.
  B. RADIUS authentication and HWTACACS authentication are mutually exclusive and cannot be used as two-factor authentication for the same user at the same time.

• Question 374:

  FILL IN THE BLANK

  SR-MPLS TE provides multiple protection mechanisms. In one mechanism, FRR (Fast Reroute) constructs a virtual node to merge multiple identical route advertisement nodes into a single logical node and then computes the backup next hop for this virtual node using the TI-LFA algorithm. This allows traffic to be rapidly switched when a failure occurs.

  The name of this protection mechanism is: _______

  Remote LFA (RLFA)

• Question 375:

  A company network runs the OSPF protocol. In order to understand the OSPF mechanism in the network, a project is performed to analyze packet transfer operations. Which of the following descriptions of OSPF messages are correct? (Choose two)

  A. The interface sends a Hello packet immediately after joining the OSPF area.
  B. LS Update packets are sent only when the adjacency relationship is established.
  C. When an LsUpdate packet is received, the router must send an LsAck acknowledgment.
  D. LS Update packets synchronize the link state database by sending detailed LSA information.
  A. The interface sends a Hello packet immediately after joining the OSPF area.
  D. LS Update packets synchronize the link state database by sending detailed LSA information.

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  Explanation

• Question 376:

  What are the main reasons why RSTP converges faster than STP?

  A. RSTP increases the variety of port states
  B. RSTP has a smaller overhead
  C. RSTP does not converge based on timers
  D. RSTP has a smaller timer
  C. RSTP does not converge based on timers

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  Explanation

• Question 377:

  DHCP Relay is responsible for forwarding DHCP packets between the DHCP server and the DHCP client, assisting the DHCP server in dynamically assigning network parameters to the DHCP client.

  A. TRUE
  B. FALSE
  A. TRUE

• Question 378:

  An SR-MPLS Policy needs to steer service traffic into a specific tunnel for forwarding. If multiple services send traffic to the same destination address, which traffic diversion method is recommended to ensure that each service receives the appropriate forwarding quality?

  A. Endpoint-based traffic diversion
  B. Color-based traffic diversion
  C. 5-tuple-based traffic diversion
  D. DSCP-based traffic diversion
  B. Color-based traffic diversion

• Question 379:

  As shown in the figure, an engineer uses four routers to test the interoperability of branch networks. R1, R2, and R3 in Branch 1 deploy OSPF to implement network interoperability, and R2, R3, and R4 in Branch 2 deploy IS-IS to achieve network interoperability. The engineer now wants to allow R1 to access R4's loopback address.

  Which of the following actions will meet this requirement? (Choose two)

  

  A. No configuration is required
  B. Publish default routes only in the OSPF process on R2
  C. In the OSPF process of R2 and the IS-IS process, publish default routes separately
  D. Publish the default route only in the IS-IS process on R2
  B. Publish default routes only in the OSPF process on R2
  C. In the OSPF process of R2 and the IS-IS process, publish default routes separately

• Question 380:

  In the firewall hot standby scenario, when VGMP works in load balancing mode, which of the following functions must be enabled on the firewalls to prevent the return traffic from being discarded because it does not match any session entry in the case of inconsistent forward and return paths?

  A. Automatic backup
  B. Manual batch backup
  C. Quick session backup
  D. BFD
  C. Quick session backup