Huawei H12-891 Online Practice Questions and Exam Preparation

Huawei H12-891 Online Questions & Answers

• Question 521:

  Which of the following statements about BGP EVPN principles are correct in a scenario where a VXLAN tunnel is dynamically established through BGP EVPN? (Choose three)

  A. MP_REACH_NLRI is used to carry routing information.
  B. Several BGP EVPN routes are defined through BGP extension.
  C. MP_REACH_NLRI is used to carry the RD.
  D. MP_REACH_NLRI is used to carry the RT.
  A. MP_REACH_NLRI is used to carry routing information.
  B. Several BGP EVPN routes are defined through BGP extension.
  D. MP_REACH_NLRI is used to carry the RT.

• Question 522:

  An SRv6 Policy can be either statically configured on a device, or be delivered to a device after being dynamically generated by the controller.

  A. TRUE
  B. FALSE
  A. TRUE

• Question 523:

  Which of the following statement about IPv6 over VXLAN is incorrect?

  A. The tunnel between VXLAN Layer 2 and Layer 3 gateways is an IPv4 network.
  B. IPv6 over VXLAN solves the problem of insufficient IP address resources for end tenants.
  C. IPv6 over VXLAN does not generate ND table entries.
  D. IPv6 over VXLAN means that the Overlay network of the VXLAN is an IPv6 network.
  C. IPv6 over VXLAN does not generate ND table entries.

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• Question 524:

  In the description of a MAC address spoofing attack, which statement is incorrect?

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

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  Explanation

• Question 525:

  Which of the following statements is correct about 6PE and 6VPE?

  A. In 6PE networking, VPN instances need to be created on PEs.
  B. In 6PE networking, IPv6 addresses of a CE can be reused.
  C. In 6VPE networking, IPv6 addresses of a CE can be reused.
  D. In 6VPE networking, no VPN instance needs to be created on PEs.
  C. In 6VPE networking, IPv6 addresses of a CE can be reused.

• Question 526:

  Which of the following description about the permanent multicast address is incorrect?

  A. All routers running the PIM protocol listen on 224.0.0.100
  B. All routers listen on 224.0.0.2
  C. All hosts and routers in the network segment listen on 224.0.0.1
  D. All routers running the OSPF protocol listen on 224.0.0.5
  A. All routers running the PIM protocol listen on 224.0.0.100

• Question 527:

  Which of the following statements about VRRP protocol versions is correct? (Choose three)

  A. VRRPv2 is only available for IPv4
  B. VRRPv3 does not support authentication
  C. VRRPv2 supports authentication
  D. VRRPv3 is only available for IPv6
  A. VRRPv2 is only available for IPv4
  B. VRRPv3 does not support authentication
  C. VRRPv2 supports authentication

• Question 528:

  What is correct below about LDP synchronization in IS-IS?

  A. LDP synchronization can be turned on globally.
  B. LDP establishes neighbors faster than IS-IS, so LDP synchronization is turned off by default.
  C. LDP synchronization avoids traffic loss when the active-standby link is switched.
  D. LDP synchronization can be deployed on the Loopback interface.
  C. LDP synchronization avoids traffic loss when the active-standby link is switched.

• Question 529:

  On a CloudCampus virtualized campus network, which of the following modes can be used by a fabric to connect to external networks? (Choose four)

  A. Layer 3 shared egress
  B. Layer 2 shared egress
  C. Layer 3 exclusive egress
  D. Layer 2 exclusive egress
  A. Layer 3 shared egress
  B. Layer 2 shared egress
  C. Layer 3 exclusive egress
  D. Layer 2 exclusive egress

• Question 530:

  Based on the LSP information displayed, which of the following statements is correct?

  

  A. When sending a packet with a destination address of 4.4.4.4, 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 2.2.2.2 is sent, it is sent without labeling.
  D. When sending a packet with a destination address of 3.3.3.3, label 1026 and send it.
  C. When a packet with a destination address of 2.2.2.2 is sent, it is sent without labeling.

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