H12-821_V1.0-ENU V1

What are the key components of building an IP wide-area bearer network solution together with Huawei NetEngine intelligent routers?A . iMaster NCE-Fabric B. iMaster NCE-IP C. iMaster NCE-Campus D. iMaster NCE-WANView AnswerAnswer: D

 Regarding the special area of ​​OSPF, the wrong description is:A . Totally Stub Area allows the ABR to advertise the default three-type LSA, but does not accept five-type LSA and refined three-type LSA B. The difference between the NSSA Area and the Stub area is that this area allows the introduction of external routes of the autonomous system, and the ABR issues an LSA7 advertisement...

Among the routing policy tools commonly used in BGP, the one that can be used to match a specific AS_path is:A . filter-policy B. ip-prefix C. ip as-path-filer D. community-filterView AnswerAnswer: C

 Regarding the description of the Hello message in PIM-SM, the error is:A .  The routers periodically use Hello messages to keep in touch B. In the PIM-SM network, the newly started multicast router needs to use Hello messages to discover neighbors and maintain neighbor relationships C. Hello packets are sent to the multicast address 224.0.0.5 D. Elect DR in multi-router network segment through Hello messageView AnswerAnswer: C

When using authentication in BGP configuration, how should it be configured?A .  A pair of BGP peers must use the same MD5 password B. All routers in the AS must use the same password C. All BGP peers on a router must use the same password D. All routers in the same AS must use the same passwordView AnswerAnswer: A

​​Regarding the description of LSA header information in OSPF AS -External C LSA, which is wrong?A . Link State ID indicates the destination network address B. Forwarding Address is always 0.0.0.0 C. Advertising Router indicates the Router ID of ASBR D. Net mask indicates the network mask of the destination network segmentView AnswerAnswer: B

 As shown in the figure, the four routers in the same LAN run IS-IS, and R1 is DIS. Then R2, R3  R4 respectively establish adjacency relationship with R1, and R2, R3, R4 do not establish adjacency relationship. A . True B. FalseView AnswerAnswer: B

 Regarding the description of IGMP Snooping-working mechanism, which is the correct?A . The layer 2 switch establishes and maintains the PIM routing table on the layer 2 by continuously monitoring IGMP messages. B. When IGMP Snooping is not running, the multicast message will be broadcast on the second layer. After running IGMP Snooping, the message will no longer be...

 Which of the following does not belong to IGP?A . RIP B. IS-IS C. BGP D. OSPFView AnswerAnswer: C

 Regarding the ABR in OSPF, which is the wrong description?A . ABR cannot generate Type 3, Type 4, and Type 5 LSAs B. Convert the Type 1 and Type 2 LSAs in the connected non-bone thousand areas into Type 3 LSAs and publish them to the backbone area C. The Type 1, Type 2, and Type 3 LSAs in the...