Huawei Huawei Certifications H12-891 Questions & Answers

• Question 231:

  How do.8021w and 8021D handle BPDUs?( Single choice questions).

  A. The 8021D bridge only forwards BPDU packets received from the root bridge

  B. 8021D bridges do not forward BPDU packets

  C. The 8021w bridge only forwards BPDU packets received from the root bridge

  D. 8021w Bridge does not forward BPDU packets

  Correct Answer: A

• Question 232:

  What is the following description of MPLS incorrect?

  A. The length of the MPLS tag is 20 to 20 for packet forwarding.

  B. The tag space range of dynamic signaling protocols such as LDP, M P-BGP is 16 to

  C. When using the TTL processing method of Pipe mode, the IP packet transmits the TTL of the IP packet over the IPLS network. The value is only minus 1 for the MPLS in and out nodes.

  D. MPLS supports multi-layer label nesting, and the S bit value of the innermost label is 1.

  Correct Answer: B

• Question 233:

  Regarding Policy Routing, the following description error is ?( Single choice questions).

  A. When configuring local policy routing, if two next hop and two outbound interfaces are set in the policy at the same time, packet forwarding only distributes the load between the two outbound interfaces.

  B. Interface policy routing is only supported for application in the inbound direction of an interface.

  C. Interface policy routing only takes effect for forwarded packets, but has no effect on packets sent locally.

  D. If the message matches the permit table entry in the interface policy route , the message must be forwarded according to the next hop specified by the interface policy route

  Correct Answer: D

• Question 234:

  /R1Jospf1lRL-osp- jarea.2[RLospf-1-arca-0002]network1001310000 As shown in the configuration, the administrator configured OSPF but RI on R1 You cannot learn routes for other routing rings. Then the possible cause is the question).

  A. This router does not have an OSPF process number configured

  B. This router is configured with a different zone ID than its neighbor router's zone ID

  C. This router does not have authentication features configured, but neighbor routers configure authentication features

  D. The declared network address of this router does not match the interface mask

  Correct Answer: BC

• Question 235:

  As shown in the following figure, R1 and R2 establish a neighbor relationship for Level2, which is critical: placed as follows, then the following about The route entry for R2 is correct

  

  A. The 0:/64 router appears in the IP routing table

  B. 2022:/64 Routers appear in the IP routing table c.2019::/64 Routers appear in the P routing table

  C. 2021:-/64 Router will appear in the P routing table

  Correct Answer: ABC

• Question 236:

  ?? Route ? Policy ??:ip community-filter Ipermit 100: 1 ip as-path-filter 2 permit ^I00$ route- policy test permit node 10 if-match communityfilter 1 if-match as-path-filter 2 apply

  as-path 200 Is the above configuration description correct?

  A. The BGP route matches the above only if the BGP route carries a community attribute value of 100:1 or if the AS PATH is 100 route one policy. The AS-one PATH attribute that matches the route is changed to 200

  B. The BGP route matches the above only if the BGP route carries a community attribute value of 100:1 and the AS-One PATH is 100 route policy? The AS-PATH nature of the matching route is changed to 200

  C. Only if the BGP route carries an AS-PATH of 100, the BGP route matches the route one policy above. The AS-one PATH attribute that matches the route is changed to 200

  D. As long as the BGP route carries a community attribute value of 100:1, the BGP route matches the route-policy above The AS-PATH attribute of the matching route is changed to

  Correct Answer: B

• Question 237:

  Which of the following options can affect the establishment of IBGP neighbors?

  A. iBGP-Multi-hop is not configured

  B. Authentication is unsuccessful

  C. IGP routing is not passable

  D. BGP protocol version inconsistencies

  Correct Answer: BCD

• Question 238:

  When the ABR is a Type 5/7 LSA Switch router in the NSSA zone, then the ABR can be used against the Type 7 LSA The converted type 5 LSA is aggregated.

  A. True

  B. False

  Correct Answer: A

• Question 239:

  Router RI and Router R2 run BGP. Both routers are in the AS65234 The route for router R2 exists in the BGP routing table of the router RI, but not in the IP routing table of the router RI . So what causes the problem to occur? (Single Choice Questions).

  A. Synchronization is turned off

  B. The B. BGP neighbor relationship is Down

  C. Router R1 does not enable BGP Multi-hop

  D. Routing is not optimal

  Correct Answer: D

• Question 240:

  Is the following figure correct about NDP's process of resolving link-layer addresses?

  

  A. Right

  B. Wrong

  Correct Answer: A