Huawei Huawei Certifications H12-891 Questions & Answers

• Question 21:

  When the load is an ICMPv6 message, what is the numeric value of the Next Header field in the IPv6 header if the presence of an extended header is not taken into account?

  A. 58

  B. 78

  C. 55

  D. 68

  Correct Answer: ACD

• Question 22:

  The router connects two EBGP neighbors through two parallel Serial cables, what do you do to achieve bidirectional negative sharing between two EBGP neighbors connected by these two parallel Serial cables? ( Single choice questions).

  A. Without any method, BGP automatically implements load sharing of traffic across different autonomous systems on the available links

  B. Use the Loopback interface to establish an EBGP neighbor relationship, configure EBGP Muti-hop, configure the Loopback interface as the update source, and then use IGP to implement Equivalent path load sharing between Loopback addresses

  C. Configure the EBGP neighbor relationship with the Loopback interface as the update source, and the IGP in each AS needs to introduce two equivalent paths to the loopback address of the EBGP neighbor; And you need to use the command "next-hop?local"

  D. Use the command "ebgp-load-balance" at both ends

  E. To configure an EBGP neighbor relationship with the Loopback interface as the update source, the IGP in each AS needs to introduce two equivalent paths to the EBGP neighbor loopback address ; And the commands "ebgp maxhop" and "next-hop-local" are used

  Correct Answer: B

• Question 23:

  There can be multiple nodes under a route -policy, different node numbers are identified by nodes, and each node can have multiple if-match and apply clauses, which of the following descriptions are wrong ?

  A. The relationship between the if-match clauses under each node is "and"

  B. The relationship between different nodes is an "and" relationship

  C. There is an "or" relationship between different nodes

  D. The relationship between the if-match clauses under each node is "or"

  Correct Answer: BD

• Question 24:

  In Huawei devices, when SIS introduces external routes and sets external route tags for route information, the Metric type of ISIS does not need to be modified and remains default.

  A. True

  B. False

  Correct Answer: B

• Question 25:

  Which IPV6 address would you ping to confirm that OSPFv3 is capable of pastoring unicast messages over the link?

  A. Site local Multicast

  B. Anycast Address

  C. Global Address of the link

  D. Unique Local Add

  E. Link Local Address

  Correct Answer: CDE

• Question 26:

  Regular expressions can be used for Community-filter and AS-path-filter definition attribute types for route filtering.

  A. True

  B. False

  Correct Answer: A

• Question 27:

  When you deploy BGP/MPLSIPVPN, when two VPNs have a common site, the common site must not use

  overlapping address spaces with the other sites of the two VPNs.

  The series description for configuring static lSPs in MPLS networks is correct?

  A. When an LSR is Ingress LSR, only configure Out Label, which ranges from 16-1048575

  B. When an LSR is a Transit LSR, you need to configure both In Label and Out label, both in the range of 16-1023

  C. When an LSR is TransitLSR, you need to configure both ln Label and Out Label, both of which are 161023 The Out Label ranges from 16 to 1048575

  D. When an LSR is An Egyptian LSR, only in Label needs to be configured, ranging from 16-1023

  Correct Answer: BD

• Question 28:

  As shown in the figure, an engineer uses four routers to test the interoperability of branch networks, where R1, R2, and R3 in branch 1 deploy OSPF Network interoperability is implemented, and R, R3, R4 in Branch 2 is deployed is-IS to achieve network interoperability. Now that the engineer wants to implement R1 access to R4's loopback address, which of the following actions will meet this requirement?

  

  A. No configuration is required

  B. Publish default routes only in the OSPF process for R2

  C. In the OSPF process of R2 and the IS-IS process, the default routes are published separately

  D. Publish the default route only in the IS-IS process of R2

  Correct Answer: BC

• Question 29:

  If an administrator wants to manage certain routes on the router during operations, the following tools are listed below. These routes can be flagged so that administrators can configure policies

  A. If the BGP protocol is running, the route is marked with the community attribute

  B. Use ACLs to tag routes on the router.

  C. Use the Tag value to mark the route on the router.

  D. Use ipprefix to tag routes on the router.

  Correct Answer: AC

• Question 30:

  If you want to advertise 19072270/27 to an EBGP neighbor, is the following command correct?

  A. network 19072270 mask 255255255224

  B. network 1907227000031

  C. network 19072270255255255224

  D. network 19072270

  E. network 19072270255255255240

  Correct Answer: C