まもなく無料セール終了！リアルH12-891_V1.0-ENUのPDF解答で合格せよ [2025年03月01日]
最新の2025年03月試験H12-891_V1.0-ENU問題集合格できる認証試験合格させます
質問 # 27
Router R1 runs the OSPF protocol, use the "display ip routing-table" command to view the routing table of the router R1, the following about the OSPF in the routing table.
Is the information described correctly?
- A. In the routing table, route table entries identified by the "OSPF" identifier can only be learned through LSAs of Type 3
- B. In the routing table, the routing table entries identified by the "OSPF" identifier can be learned through the 1/2/3/5 LSA
- C. In the routing table, the routing table entry identified with the "O_ASE" identifier can only be learned by routing introduction
- D. In the routing table, the routing table entries identified by the "OSPF" identifier can only pass Class 1 LSA
正解：C
質問 # 28
In order to reduce the number of OSPF routes in certain areas, the OSPf protocol has developed special area functions, and the following description of the characteristics of OSPF special areas is correct
- A. AS-External-LSA is allowed to be published to the Stub region
- B. Any OSPF zone can be configured as a special zone
- C. Zone can be equipped with zhiyi
- D. ASBR-Sunmary-LSA is allowed to be published to the NSSA region
正解：C
質問 # 29
The Option field in OSPFv3 appears in all LSAs
- A. True
- B. False
正解：B
質問 # 30
In route-policy, what are the BGP attributes that can be used for the apply clause?
- A. MED
- B. AS-Path
- C. Local-Preference
- D. Day
正解：A、B、C
質問 # 31
As shown in the figure, there are two IP6 networks that can access the IPv4 network, and the IPsec tunnel needs to be established between the two IPv6 networks to communicate, which of the following requirements? (). Single choice questions).
- A. None of the above options are correct
- B. ESP + tunnel mode
- C. AH + transmission mode
- D. AH + tunnel mode
正解：B
質問 # 32
A company network runs the OSPF protocol, an engineer in order to understand the OSPF mechanism in the network to perform packet capture operations, the following ospf message description is correct?
- A. LSUpdate message is sent only when an adjacency relationship is established
- B. When an LS Update packet is received, the router must send an LSAck to acknowledge
- C. LSUpdate messages synchronize the link state database by sending detailed LSA information
- D. The interface sends Hello packets as soon as it joins the OSPF area
正解：C、D
質問 # 33
Without dividing the zone, is the following description of the link state routing protocol correct?
- A. Routers throughout the flood domain have the same database of wrong-state states
- B. Each router establishes a topology for the entire floodplain
- C. Routers in the flood domain may receive the same link state information repeatedly
- D. The router will send all the mis-routing status information from one neighbor to all other neighbors to ensure the synchronization of the database
- E. Each router learns route entries directly from the route update and adds them to the routing table
正解：A、B、C
質問 # 34
Regarding the MPLS basic forwarding process, the following description is incorrect? Radio
- A. By default, the PHP-enabled Erass node assigns a label value of 3 to the inverted second-hop node.
- B. When an IP message enters the MPLS domain, the MPLS boundary device inserts a new label between the layer 2 header and the IP header.
- C. The transport node device replaces the existing top-of-stack label (outermost label) with the label assigned by the next hop device.
- D. When the P message enters the MPLS domain, check whether the Tunel lD value corresponding to the destination IP address is Ox0O If the Tunel IlD value is Ox0. Then enter the MPLS forwarding process.
正解：D
質問 # 35
Regarding BGP's recognized arbitrary attributes, which of the following descriptions is correct?
- A. The BGP router cannot recognize the
- B. must be passed between BGP neighbors
- C. All BGP routers must be recognized
- D. There is no requirement to be present in the Update message, and you can decide whether to add it to the Update message on a case-by-case basis
正解：C、D
質問 # 36
ISIS elects DIS in broadcast multiplexed access networks, and the following statement about DIS is correct? (Multiple choice)
- A. In a broadcast multiple access network, DIS sends Hello PDUs at three times the frequency
- B. ISIS elects dis by comparing priorities, and mac addresses if the priorities are consistent
- C. DIS supports preemption function, after the new DIS preemption is successful, there is no need to flood any LSP packet
- D. DIS guarantees database synchronization by periodically sending CSNP messages
正解：A、B、D
質問 # 37
The Option field in OSPEv3 appears in all LSAs
- A. True
- B. False
正解：B
質問 # 38
The following description of the RD attribute filter for BGP is correct?
- A. If RD-filter is not configured, but the RD-filter is referenced for filtering, the matching result is deny.
- B. If RD-filter is configured, but the routed RD is not matched with any of the RDs defined in the rule, the default match result is permit.
- C. Multiple rules are matched in the order in which they are configured.
- D. There is always an "or" relationship between the rules configured by RD-filter.
正解：C、D
質問 # 39
What about the description of IGMP Snooping, is it correct?
- A. IGMP Snooping runs at the link layer and is a multicast constraint mechanism on Layer 2 Ethernet switches that manages and controls multicast groups
- B. IGMP Snooping does not consume the CPU of the switch
- C. IGMP Snooping solves the problem of multicast messages broadcasting in layer 3
- D. IGMP Snooping establishes a MAC multicast address table by listening for IGMP packets sent by the host
正解：A、D
質問 # 40
View the details of all VPN instances on a network device and the results are as follows, which of the following statements is wrong? (Multiple choice questions).
- A. The device assigns a label to each route of the VPN-Instance vpna.
- B. The GigabitEthernet 1/0/0 interface is tied to the VPN-Instance vpna
- C. VPN-Instance vpna does not receive VPN routes with an RT of 2:1.
- D. The total number of instances that enable the IPv6 address family in the VPN configured on this side is 1.
正解：A、D
質問 # 41
Which of the following BGP attributes is not required in the Update message for a BGP route?
- A. WITH
- B. Local-Preference
- C. AS_PATH
- D. Origin
正解：A、B
質問 # 42
Regarding the Stub region in the OSPF protocol, the following statement is correct.
- A. ASBR cannot exist in the Stub zone
- B. Backbone zones cannot be configured as Stub zones
- C. Type7 LSA injection is not allowed in the Stub zone
- D. Virtual connections cannot traverse the Stub region
正解：A、B、C、D
質問 # 43
The advantages of building a campus network using stacking, clustering technology include which of the following? (Multi-select)
- A. Simplifies network management and reduces the complexity of network deployment planning
- B. Business disruption time is greatly reduced
- C. Improved network equipment and link utilization
- D. It can effectively reduce network power consumption
正解：A、B、C
質問 # 44
IS-IS supports the processing and computation of IPv6 routes by adding ATLPs to carry IPv6 addresses and reachability information.
- A. FALSE
- B. TRUE
正解：B
質問 # 45
Underneath, what doesn't belong to EVPN Type2 routing is? (Multiple choice question)
- A. Host MAC address advertisement
- B. Host ARP advertisement
- C. BUM message forwarding
- D. Host IP Route Advertisement
正解：C
質問 # 46
The router is running both OSPFv3 and ISIS, and the OSPFv3 route needs to be introduced to ISIS, which of the following ingestion configurations is correct:( Multiple choice questions).
- A. [Huawei] sis 1 [Huawel-isis-1] networkentity47001.000000200 Huawe-ss 1 ipb6enable topologist standard Huawei is l p6 importroue esgp.31lese! [Huaweisis-1] quit [Huawei
- B. Huawel ias 1 ltuawei-i- isHeveleve!. l Huave-s-1 networkenity 47001.0000020 Hawe - sis-1 ipv6enabletopolog standard Htuawer is-] pob impot.
- C. (Huawei isis l Huawei-si-1 s-levelve!-l Huavei- ti.-1] networkentiy 4 .001.00001. Huawei sis pob enable topogy s andard Hhuawelitis ]l p6 importroute ospfv3 1 [Hu
- D. HuaweJ IsIS [Huaweij isis 1 Huavei-isis-1]networkentity470001.000000020Huawei-sis-1limpotroueosph31 ltuowe.is- ut tuawl sph 1 fhuwf spol Jronea d2222 [Huawei) isis 1 Huawe-sis-1] is level level-1 [Huavei-sis-1 etworkentity 47001.0000020 Huawel-d.-1[impotroteosph-1 le e. [tuawelts a ut ltunweospfv3 1 [Huawei
正解：A、B
質問 # 47
What is wrong with the following statement about digital certificates?
- A. Digital certificates contain public key information.
- B. Authentication fails when the peer certificate is received within the validity period, but the device itself is in the wrong time if it is not within the validity period of the certificate.
- C. Even if two PRI entities are not in the same CA system, authentication can be completed as long as both parties can recognize each other's CA.
- D. Digital signatures guarantee the integrity of digital certificates.
正解：C
質問 # 48
About multi-instance CE (Multi-VPN-Instance CE, MCE).
What is the error described below?
- A. The MCE vs. PE direction must have multiple physical links to achieve isolation between different VPN instances
- B. On the MCE device, you need to create their own routing tables for different VPNs and bind to the corresponding interface
- C. MCE-enabled devices can access multiple VPI instances in BGP/RPLS IPVPN applications, reducing user network equipment investment
- D. Users who connect to the same MCE but are not part of a VPN instance cannot access each other
正解：A
質問 # 49
Which of the following routing tools is unique to BGP?
- A. Route-policy
- B. AS-path-filter
- C. ACL
- D. IP-prefix
正解：B
質問 # 50
The means of the LAND attack is that the attacker sends an SVN packet message with the same source and destination addresses to the target host, the source port and the destination port are the same, and the receiver waits for the final ACK packet to be sent, the connection is always in a semi-connected state, resulting in a full limited TCP reception Waste of resources
- A. True
- B. False
正解：A
質問 # 51
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Huawei H12-891_V1.0-ENU（HCIE-Datacom V1.0）試験は、データ通信技術の専門知識を証明したいプロフェッショナル向けに Huawei が提供する認定試験です。この試験は、Huawei の製品と技術を使用して複雑なデータ通信ソリューションを設計、実装、トラブルシューティングする能力を候補者がテストすることを目的としています。この試験は、ネットワークアーキテクチャの設計、ルーティングおよびスイッチング、MPLS VPN、IPv6、ネットワークセキュリティなどの分野で、候補者の知識とスキルを検証します。
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