Huawei Huawei Certifications H12-891 Questions & Answers

• Question 91:

  In a multicast network, what causes multicast traffic to not forward properly?

  A. The router does not have an RPF route

  B. PIM is not enabled on the RPF interface

  C. The upstream router will receive the PIM Join message dropped

  D. Multi-router egress network, this router is not DR

  Correct Answer: ABC

• Question 92:

  In an MPLS BGPVPN networking that does not enable MPLS penultimate hop pop-up technology. When the message reaches the last hop PE, the message has two layers of labels, and the two layers of label values can be the same.

  A. TRUE

  B. FALSE

  Correct Answer: A

• Question 93:

  Regarding the OSPFv3 protocol, the following description is incorrect?

  A. In the case of sharing a single router, each OSPFV3 process runs independently

  B. In the same OSPFv3 process under the same interface, you can run multiple instances of

  C. You can support running multiple instances on a single link

  D. OSPFv3 message header will contain the Instance ID field

  Correct Answer: B

• Question 94:

  All interfaces of the router have OSPF enabled, the Cost value of the link is identified in the figure, and the Loopback0 socket for R2 is advertised in area 1 , then Rl reaches 10022/32 with a Cost value of ?

  

  A. 50

  B. 150

  C. 200

  D. 100

  Correct Answer: C

• Question 95:

  Regarding the site in the BGP/MPLSIP VPN network architecture, the following description is correct?

  A. Under no circumstances can different sites that belong to the same VPN use overlapping address spaces

  B. Two geographically separated networks must belong to different sites

  C. Terminals connected to the carrier network through the same CE may belong to different sites

  D. A site is a set of IP systems, and a network of hosts cannot be called site

  Correct Answer: ABCD

• Question 96:

  What mechanisms or techniques can VRRP combine with to monitor uplink connectivity?

  A. IP-link

  B. BFD

  C. NQA

  D. Interface trace

  Correct Answer: BCD

• Question 97:

  When deploying BGP/MPLS IPVPN, OSPF's VPN route tag is not present.

  The extended properties of MP-BGP are passed only locally, only locally, and only meaningful on routers that receive MP-BGP routes and generate OSPF LSAs.

  A. TRUE

  B. FALSE

  Correct Answer: A

• Question 98:

  What are the reasons why the BGP connection is down after it is successfully established ? ( Single choice questions) Single choice

  A. The wrong BGP packet was received.

  B. The mandatory attribute in the route update packet is missing.

  C. Open message negotiation failed.

  D. After the BGP connection is established, the keepalive message is not received within the negotiated holdtime time.

  Correct Answer: C

• Question 99:

  In the evolution from IPv4 networks to IPv6, some transition technologies have emerged, which of the following are common types of transition technologies?

  A. Dual-stack technology

  B. Tunneling Technology

  C. Compatible with Technology

  D. Conversion Technology

  Correct Answer: ABCD

• Question 100:

  To build a loopless Layer 2 network, which of the following schemes is optimal?( Single Choice)

  A. Stacking + Link Aggregation

  B. TRILL+MSTP

  C. ??+MSTP

  D. Link Collection + MSTP

  Correct Answer: A