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The HCIE-Datacom V1.0 certification exam is designed to prepare candidates for the highest levels of network engineering roles. H12-891_V1.0-ENU exam uses a rigorous testing methodology that focuses on practical skills, real-world problem-solving, and scenario-based questions. It tests candidates' capacity to configure Huawei's enterprise network products, analyze network issues, and design more efficient, stable, and secure networks that meet enterprise-level demands.
NEW QUESTION # 155
As shown in the figure, the PPP link between R1 and R2 is not in the same network segment, but the R1 and R2 direct connectors can communicate, and the Ethernet link cannot communicate under the same planning, why?
- A. The interconnect POS ports of R1 and R2 learn the 32-bit host route for each other's direct connections through IPCP
- B. The interconnect POS ports of R1 and R2 learn the 24-bit subnet route of each other's direct connection ports through IPCP
- C. The interconnect POS port of RI and R2, through LCP learns the MAC address of the opposite termination, does not need to use ARP to request the MAC address
- D. The data packets of the interconnect POS ports of R1 and R2 do not need to encapsulate ethernet headers and do not need to use ARP to request MAC addresses
Answer: A,D
NEW QUESTION # 156
What is wrong with the following statement about digital certificates?
- A. Digital signatures guarantee the integrity of digital certificates.
- 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. Digital certificates contain public key information.
- D. 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.
Answer: D
NEW QUESTION # 157
In an MPLS IBGP VPN environment, if tags are distributed only through BGP, LDP, the MPLS tags for a message can be up to two layers of tags.
- A. True
- B. False
Answer: A
NEW QUESTION # 158
The following statement about IPSec VPN is correct
- A. Brutal mode can support NAT traversal, while main mode does not support NAT traversal.
- B. Two routers establish an IPSec VPN in brutal mode, so that the tunnel is built with a minimum of 4 messages interacting between the two devices.
- C. The two routers establish IPSecVPN in main mode, and from the 5th message (included), the payload's data is often encrypted.
- D. The two routers can establish an OSPF neighbor relationship through the IPSec VPN (19) channel and exchange intranet devices by
Answer: C,D
NEW QUESTION # 159
In an MPLSVPN network, when a packet enters the Internet and is forwarded, it is encapsulated with two layers of MPLS tags, and the processing of the packet in the following options is described correctly?
- A. The Egress PE appliance receives an UNlabeled IP packet
- B. based on the inner tag. The packet pops up the outer label on the penultimate hop device and forwards it to the Egress PE device
- C. The Egress PE device correctly sends packets to the appropriate VPN
- D. The penultimate hop device receives packets with an outer label of 3
Answer: B,C,D
NEW QUESTION # 160
In order for routers at both ends of the IPv6 over lPv4 manual tunnel to exchange routing information, OSPV3 can be enabled on the tunnel, osPFv3 will be able to form a normal neighbor relationship, and the tunnel interface will be treated as a P2P link interface.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION # 161
In the description of the MAC address spoofing attack, the error is? Radio
- A. MAC address spoofing attacks primarily exploit the switch Mac address learning mechanism
- B. Mac address spoofing attacks cause the switch to learn the wrong mapping of Mac addresses to IP addresses
- C. A MAC address spoofing attack causes the data that the switch is sending to the correct destination to be sent to the attacker
- D. An attacker can perform a MAC address spoofing attack by sending a forged source Mac address data frame to the switch
Answer: B
NEW QUESTION # 162
Which of the following default routing delivery methods does OSPF support? (Multi-select)
- A. Issuance can only be enforced
- B. Answer can be issued on ASBR
- C. Can be issued on ABR
- D. It can be issued without force
Answer: B,C,D
NEW QUESTION # 163
The basic header length of an IPv6 message is a fixed value.
- A. FALSE
- B. TRUE
Answer: B
NEW QUESTION # 164
In broadcast networks, elections to DIS begin only after a neighbor relationship has been established
- A. True
- B. False
Answer: A
NEW QUESTION # 165
Regarding the characteristics of CE double attribution, the description is wrong with?
- A. In the CE dual home network, it is possible to generate loops, and you can use route-tag to solve the loop problem.
- B. VRFs of two PEs connected to the same CE can belong to different VPNs.
- C. CE accesses the backbone through two links that can be used as both load sharing and primary and standby links.
- D. CE and PE form a CE dual-home network, which can ensure high network availability.
Answer: B
NEW QUESTION # 166
Regular expressions can be used for Community-filter and AS-path-filter definition attribute types for route filtering.
- A. True
- B. False
Answer: A
NEW QUESTION # 167
Based on the configuration shown in the figure below, it can be known that R4 has () interfaces advertised into IS-IS?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: D
NEW QUESTION # 168
In route-policy, what are the BGP attributes that can be used for the apply clause?
- A. Local-Preference
- B. MED
- C. AS-Path
- D. Day
Answer: A,B,C
NEW QUESTION # 169
An engineer used 2 routers to test IPv6 services and simulated the interconnection between headquarters and branches by running BGP4+. The network logic topology is shown in the figure, regarding the delivery of IPv6 routes between two devices, which of the following statements is wrong?
- A. When a route is passed, it carries a recognized mandatory attribute such as AS_Path
- B. When routing is passed, the Next_Hop attribute must be an IPv6 global unicast address
- C. If the Update message carries the MP_REACH_NLRI attribute, it means that the advertisement is reachable route
- D. BGP4+ passes routing information between peers via Update packet
Answer: B
NEW QUESTION # 170
Regarding the domain-authentication-mode md5 hello command in the ISIS process, the correct explanation is?
- A. ISIS authentication cannot be applied in IPv6 environments.
- B. All router domain authentication methods of the same routing domain are MD5, the password is hello, and lS-IS SNP and LSP will spread normally.
- C. This command is mainly used to make is the ISIS Hello message carry authentication information during the transmission process.
- D. outing domain authentication is primarily used to allow level-1 and Level-2 SNP and LSP messages to carry authentication information during delivery.
Answer: B
NEW QUESTION # 171
The correct statement about the VRRP protocol version is?
- A. VRRPv3 does not support authentication
- B. VRRPv2 is only available for IPv4
- C. VRRPv3 is only available for IPv6
- D. VRRPv2 supports authentication
Answer: A,B,D
NEW QUESTION # 172
The OSPF3 protocol is a separately developed protocol that differs somewhat from OSPF2 in that OSPFv3 is link-based rather than network segmented, and the following statement is incorrect? (). Single choice questions).
- A. The routing information obtained by the OSPFv3 router from the neighbor uses the neighbor's Link-Local address as the next hop in the forwarded packet
- B. All OSPFv3 interfaces use the Link-Local address as the destination address of the message
- C. For two OSPF routers connected to the link, you can establish a neighbor relationship even if you do not configure a unicast IPv6 address
- D. Two OSPF routers connected to the link can establish a neighbor relationship even if their IPv6 address prefixes are different
Answer: B
NEW QUESTION # 173
What descriptions of the OSPF protocol are correct?
- A. AS-External-LSA describes the path to the as outside of the route, and the scope of the flood is the AS outside
- B. AS-External-LSA describes the router's path to ASBR
- C. The cost value of the second type of external route is only the AS external cost value, ignoring the AS internal cost value
- D. AS-External-LSA does not belong in any region
Answer: C,D
NEW QUESTION # 174
An engineer performed the ingestion operation on an OSPF router in a network of the company, is the following statement about the introduction of the routing LSA correct?
- A. Using the Link State ID and Advertising Router, you can uniquely identify an LSA
- B. The Advertising Router report is set to as the Router ID of ASBR
- C. Link State lD is set as the destination network segment address
- D. Net Mask is set to all 0
Answer: B,C
NEW QUESTION # 175
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Huawei H12-891_V1.0-ENU (HCIE-Datacom V1.0) Certification Exam is a professional certification offered by Huawei Technologies Co. Ltd. HCIE-Datacom V1.0 certification is designed to validate the technical skills and knowledge required by network engineers and architects to plan, design, implement, and maintain large-scale data communication networks using Huawei products and solutions. It is a highly sought-after certification by IT professionals seeking to enhance their career prospects in the networking industry.
Huawei H12-891_V1.0-ENU exam is a comprehensive test that covers a wide range of topics related to data communication technologies. It is designed to evaluate the practical knowledge and skills of professionals in the field of data communication and networking. H12-891_V1.0-ENU exam consists of multiple-choice questions, scenarios, and simulations that assess the candidate's ability to design, configure, and troubleshoot complex data communication networks. By passing H12-891_V1.0-ENU exam, candidates demonstrate their expertise in data communication technologies and their ability to apply this knowledge to real-world scenarios.
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