Huawei Huawei Certifications H12-891 Questions & Answers

• Question 181:

  In SSM, what version of IGMP is required?

  A. IGMPV3

  B. IGMPV4

  C. IGMPV2

  D. IGMPV1

  Correct Answer: A

• Question 182:

  Users hope to be able to make the router forward and select messages according to their own defined policies on the basis of traditional route forwarding, and can adopt policy routing, and the following description of policy routing is incorrect

  A. Policy Routing can set the next hop IP address

  B. Policy Routing cannot be set in the next statement DSCP

  C. Policy Routing cannot be used to set IP precedence

  D. Policy-based routing can be used to match message lengths

  Correct Answer: C

• Question 183:

  As shown in the figure, the neighbor relationship between R1 and R2 has just been established, and the database synchronization process between R1 and R2 is correct.

  

  A. The message sent by R1 to R2 is a PSNP message

  B. R1 sends the packet of R2 as the CSNP packet. The message sent by

  C. R1 to R2 is an LSP packet. The message sent by

  D. R1 to R2 is the Hello message.

  Correct Answer: B

• Question 184:

  In the laboratory network, the network is built according to the following topology diagram, SWI is the default configuration, and SW2 disables the switch STP function.

  

  A. SG0/0/2 for WI enters the Discarding state

  B. SW2 and G0/0/1 enters the Discarding state

  C. SW2 G0/0/2 enters discarding state

  D. No interface is backed up for blocking

  E. SWI's G0/0/1 enters the Discarding state

  Correct Answer: D

• Question 185:

  Regarding the BGP ring protection mechanism, is the following description correct?

  A. The AS_ PATH attribute is used between autonomous systems to prevent ring cats

  B. The Cluster List property is used for loop guard within the reflector cluster, and the router rejects the route when it finds that the Cluster List of the route entry contains its own Cluster ID.

  C. Routes learned from IBGP are not advertised to IBGP neighbors and are used to prevent routing loops inside the AS.

  D. You can use the AS_ CONFED_SET attribute to prevent loops within a consortium.

  Correct Answer: ACD

• Question 186:

  RD is used to distinguish between the same IP address in different VPNs, and how many bits (radio) the RD contains

  A. 64

  B. 32

  C. 16

  D. 128

  Correct Answer: A

• Question 187:

  Regarding route introduction, the following description is correctly ?( Multiple choice questions).

  A. OSPF introduces two types of external routes, with the first type of external route taking precedence over the second type of external route.

  B. Use the default-route imported command in BGP only to introduce default routes that already exist in the local IP routing table.

  C. When ISIS introduces an external route, if you do not specify the route type that is introduced, the Level-1 route is introduced by default on the L1/2 router

  D. When ISIS introduces an external route, if you do not specify the type of route that is introduced, the Leve1-1 route is introduced by default on the L1 router .

  Correct Answer: AB

• Question 188:

  In ospf broadcast networks, there are 4 routers RTA, RTB, RTC, and RTDs within the same network segment The DR priorities are 2, 1, 1, and O, and the Router ID is respective 1921681.1, 19216821, 19216831, and 19216841 If the OSPF protocol is enabled on both of these four routers, ospf selects the BDR as

  A. RTB

  B. RTC

  C. RTD

  D. RTA

  Correct Answer: B

• Question 189:

  Which of the following scenarios is not suitable for deploying interface policy routing?

  A. In the scenario of multiple ISP egresses of enterprise networks, different network segments of the intranet access the Internet through different ISP egresses

  B. The traffic accessed by the intranet and the extranet to the side-mounted security detection device is pulled on the core switch

  C. Modify the next hop of locally originating traffic

  D. Pull the traffic of the intranet and the Internet accessing each other on the core switch to the AC device attached to the side

  Correct Answer: C

• Question 190:

  The following statement about ISIS (IPv6) is correct?

  A. In order to support the processing and calculation of IPV6 routes, IS-IS has added TLV232, 236

  B. By default, IS-IS has the multi-topology feature turned on

  C. IS-IS works at the data link layer and only needs to add a new TLV to support IPv6

  D. To support the processing and computation of IPv6 routes, IS-IS has added NLPID to the 129TLV

  Correct Answer: ACD