New H12-891_V1.0 Exam Duration, H12-891_V1.0 Learning Materials

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Huawei H12-891_V1.0 (HCIE-Datacom V1.0) Exam is a certification exam that validates the skills and knowledge of IT professionals in the field of data communication. H12-891_V1.0 exam is designed for individuals who are experienced in designing and implementing large-scale data communication networks. The HCIE-Datacom certification is the highest level of certification in the Huawei Datacom certification track and is highly valued in the industry.

Huawei H12-891_V1.0 (HCIE-Datacom V1.0) Certification Exam is a professional-level certification exam offered by Huawei Technologies Co. Ltd. H12-891_V1.0 exam is designed to test the skills and knowledge of professionals in the field of data communication. H12-891_V1.0 Exam covers a wide range of topics, including network design, implementation, maintenance, and troubleshooting. It is intended for professionals who have several years of experience in the data communication field and are looking to advance their careers.

Huawei H12-891_V1.0 (HCIE-Datacom V1.0) Certification Exam is a globally recognized certification program offered by Huawei. HCIE-Datacom V1.0 certification is designed for professionals who want to demonstrate their skills and knowledge in the field of data communication. HCIE-Datacom V1.0 certification exam provides an in-depth understanding of data communication technologies, including network design, protocols, and security.

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Huawei HCIE-Datacom V1.0 Sample Questions (Q96-Q101):

NEW QUESTION # 96
Fill in Blank
As shown in the figure, a sham link is established between PE1 and PE2 through the loopback interfaces. CE2 can learn the 192.168.1.0/24 route (directed route on CE1) through the sham link and backdoor link. If other parameters use their default settings, the cost of the 192.168.1.0/24 route on CE2 should be ______. (Enter an Arabic numeral without symbols.)

Answer:

Explanation:
20
Explanation:
This is a classic MPLS L3VPN with OSPF + Sham Link scenario.Key Components:CE1 to PE1 (GE0/0/0): OSPF cost = 10CE2 to PE2 (GE0/0/0): OSPF cost = 10PE1 to PE2 via Sham Link (over loopback interfaces)What happens:CE1 advertises 192.168.1.0/24 to PE1.PE1 redistributes it into the VPNv4 BGP routing table.PE2 learns this route and redistributes it back into OSPF for CE2.Route Options Seen by CE2:Backdoor link (intra-area):CE1 ↔ CE2 directly, via GE0/0/1 on each CE → OSPF cost = 10 + 10 = 20Sham Link (inter-area route): By default, if no sham link is used, the BGP-learned route is treated as an inter-area route by CE2, with a default OSPF cost of 1 (which would make CE2 prefer this over the real CE-CE backdoor link).Purpose of Sham Link:Sham link is configured to equalize or override the cost of the BGP route so that CE2 prefers the backdoor link or sees both paths equally.In this case, Huawei defaults will cause CE2 to compute the total cost as:PE1-CE1 = 10Sham link route via PE1-PE2-CE2 = also 10 (CE1 to PE1) + 10 (PE2 to CE2) = 20Final OSPF Cost Calculation at CE2:Route learned via sham link path: 10 (CE1 to PE1) + 10 (PE2 to CE2) = 20Correct answer: 20In Huawei MPLS L3VPN OSPF deployment:A sham link ensures that the cost via the MPLS VPN path is comparable to the real CE-to-CE OSPF backdoor path, preventing suboptimal routing.Without sham link: BGP redistributed routes appear as inter-area Type 3 LSAs with low cost (usually 1).With sham link: Route appears as intra-area and OSPF calculates true cost based on interface metrics.
Reference:
Huawei HCIE-Datacom V1.0 Study GuideChapter: MPLS L3VPN Integration with OSPFSection: Sham Link Design and Cost Calculation


NEW QUESTION # 97
What about the description of IGMP Snooping, is it correct?

Answer: B,C


NEW QUESTION # 98
In the Huawei SD-WAN Solution, the topologies of different VNs must be the same.

Answer: A

Explanation:
Understanding Huawei SD-WAN VN (Virtual Network) Topologies
Huawei SD-WAN uses Virtual Networks (VNs) to provide traffic isolation and policy-based routing for different services, branches, and applications.
???? VN Topologies Can Be Different
Each VN (Virtual Network) can have its own topology.
Some VNs may use full-mesh, while others may use hub-and-spoke or star topology.
Different VNs can have different routing and security policies.
✅ Example:
Corporate traffic (VN1) → Full-mesh topology for efficient inter-branch communication.
Guest Wi-Fi traffic (VN2) → Hub-and-spoke topology to restrict inter-site communication.
Why is the Answer FALSE?
❌ All VNs do not have to use the same topology.
✅ Each VN can be configured independently with a unique topology, routing policy, and security settings.
✅ Reference: Huawei HCIE-Datacom Guide - SD-WAN VN Topologies and Segmentation


NEW QUESTION # 99
On a CloudCampus virtualized campus network, service data enters different VNs from physical networks through edge nodes, and the VN that the data will enter is determined by the VLANs to which users belong. Which of the following statements about dynamic VLAN authorization is incorrect?

Answer: C

Explanation:
Dynamic VLAN Authorization in Huawei CloudCampus
Dynamic VLAN assignment allows users to be placed into specific VLANs based on authentication methods, ensuring security and network segmentation.
Correct Explanations:
# A. Wired users using 802.1X authentication receive VLAN assignments dynamically.
* After authentication, the access control system (e.g., iMaster NCE-Campus) assigns VLANs dynamically.
# C. Wireless users using 802.1X authentication also receive VLAN assignments.
* Similar to wired users, wireless 802.1X authentication allows dynamic VLAN assignment via the RADIUS server.
# D. Wired users using MAC authentication can receive VLAN assignments.
* If a user does not support 802.1X, MAC authentication can still be used to assign VLANs dynamically.
Incorrect Statement Explanation:
# B. When wireless users pass Portal authentication, they join the authorization VLANs delivered to edge nodes.
* Wrong! In Portal authentication, VLAN assignment is not dynamically delivered because Portal authentication typically applies access policies, not VLAN changes.
* Dynamic VLAN assignment is mainly used with 802.1X or MAC authentication.
Reference from Huawei HCIE-Datacom Documentation:
* Huawei CloudCampus Configuration Guide - Dynamic VLAN Assignment and Authentication
* HCIE-Datacom Training Material - VLAN Authorization in Virtualized Campus Networks


NEW QUESTION # 100
MPLS supports both static and dynamic LSP establishment. Which of the following protocols cannot dynamically establish LSPs in MPLS TE scenarios? (Select all that apply)

Answer: A,C,D

Explanation:
InMPLS Traffic Engineering (TE),Label Switched Paths (LSPs)can be established:
Statically: Manual configuration.
Dynamically: Typically viaRSVP-TE.
Protocol roles:
RSVP-TE:Used to dynamically establish and signal TE LSPs##
OSPF / IS-IS: Act asIGP protocolsand provide TE-related link-state information (like bandwidth) butdo not establish LSPs themselves## BGP: Used forroute advertisement, not forLSP setupin MPLS TE ## Correct answers: A, C, D


NEW QUESTION # 101
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