Huawei Huawei Certifications H12-891 Questions & Answers

• Question 531:

  The following message about OSPFV3 is correct?

  A. The Option field of the Hello and DD packets extends to 24-bit

  B. LSR packets containing the full LSA header information for requesting an update to the LSA

  C. The LSACK message contains LSA header information to confirm receipt of the LSU message

  D. The Hello message must contain the interface ID of the sending interface

  Correct Answer: ACD

• Question 532:

  The following statement about static VXLAN tunnel configuration is correct?

  A. A BD needs to create an NVE country, and when there are multiple BDs, multiple NVE interfaces must be created

  B. An NVE interface can be associated with multiple VNls, so you can create only one NVE interface when there are multiple BDs

  C. For a VXLAN tunnel, you need to create a corresponding NVE interface, in which you explicitly specify the source IP address and the destination IP address , so there are multiple VXLAN tunnels on the VTEP that must be vE interfaces The destination address of the VXLAN tunnel is specified in the

  D. NVE interface, and multiple VXLAN tunnels can create only one NVE interface

  Correct Answer: D

• Question 533:

  

  A. When sending a packet with a destination address of 4444, it is sent without labeling.

  B. When the router receives a packet with the label 1024, it replaces the label with 1027 and sends it.

  C. When a packet with a destination address of 2222 is sent , it is sent without labeling.

  D. When sending a packet with a destination address of 3333, label 1026 and send it.

  Correct Answer: C

• Question 534:

  In the description of the MAC address spoofing attack, the error is ? Radio

  A. Mac address spoofing attacks cause the switch to learn the wrong mapping of Mac addresses to IP addresses

  B. A MAC address spoofing attack causes the data that the switch is sending to the correct destination to be sent to the attacker

  C. MAC address spoofing attacks primarily exploit the switch Mac address learning mechanism

  D. An attacker can perform a MAC address spoofing attack by sending a forged source Mac address data frame to the switch

  Correct Answer: A

• Question 535:

  Because BGP is an EGP routing protocol, BGP routing policies can only be deployed between EBGP neighbors, and routing policies between IBGP neighbors are not valid.

  A. TRUE

  B. FALSE

  Correct Answer: B

• Question 536:

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

  A. filter-policy

  B. Route-policy

  C. lp extecommunity-filter

  D. Traffic-policy

  Correct Answer: ABC

• Question 537:

  The correct description of the scene shown in the following figure is: A. LSDB

  

  B. R1, which exists in both Level-1 and Leve-2, can ping the interface address of R2 loopback0

  C. R there is a route to R2 loopback0 10022/32

  D. No neighbor relationship can be established between R1 and R2

  Correct Answer: ACD

• Question 538:

  The following message about the Register in PIM-SM describes the correct ?( Multiple choice questions).

  A. The Register message enables the RP to learn the multicast source information

  B. The Register message is sent by the receiver router

  C. Register messages are sent to RPv via unicast instead of multicast

  D. The Register message is sent by the source DR

  Correct Answer: ACD

• Question 539:

  When DLDP detects the presence of a one-way link in the fiber, the default actions of Huawei equipment include: the DLDP state machine migrates to the Disable state, outputs Trap information, and automatically sets the interface to a blocked state.

  A. True

  B. False

  Correct Answer: A

• Question 540:

  IPv6 introduces the Solicited-Node address, which is described correctly below (multiple choice)

  A. This is a specific address that is used for resolution in ARPv6 The MAC address.

  B. The Solicited-Node address on the router interface is automatically generated and can have multiple.

  C. If the Solicited-Node address is not configured , the router automatically generates one on each interface.

  D. IPv6 introduced the Solicited-Node address to support IPv6 multicast.

  Correct Answer: B