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Huawei H35-831認定は、世界的に認められ、テレコミュニケーション産業の雇用者によって高く評価されています。これは、候補者のデータ通信における知識と専門知識を証明するもので、特にキャリアネットワークに関しています。この認定は、データ通信の分野でキャリアアップを目指すプロフェッショナルにとっても貴重な資産となります。
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Huawei H35-831（hcie-datacom-carrier（writde）v1.0）は、Huaweiが提供する高度なレベルの認定試験です。この試験は、データ通信とキャリアネットワークのさまざまな側面で候補者のスキルと知識をテストするように設計されています。この試験では、ネットワークアーキテクチャ、プロトコル、テクノロジー、セキュリティ、パフォーマンスの最適化など、幅広いトピックをカバーしています。
質問 # 23
Which of the following statements are correct regarding the reliability of MVPNv4 over BIERv6?
Select all that apply.
正解：A、B、C、D
解説：
Huawei Reference Verification:
Huawei's MVPNv4 over BIERv6 reliability architecture supports dual-root 1+1 protection in which primary and backup multicast ingress paths can be established concurrently. Separate routing paths reduce the impact of a single shared failure. The receiving PE can obtain packets through both roots but normally delivers one selected stream into the customer VPN to avoid duplicate service delivery. Upon loss of primary traffic it evaluates availability of the backup stream and may initiate a C-multicast rejoin when both reception paths are impaired. Huawei-China Unicom interoperability testing demonstrated dual-root BIERv6 recovery, supporting the principal architecture. The exact C-multicast recovery trigger remains release-specific.
Technical Deep Dive:
A, B, C and D are the intended answers. Planning diverse primary and backup tunnels reduces common-mode failure exposure. With 1+1 dual-root protection the sender's multicast flow is injected toward receiver PEs via both ingress roots, allowing a receiver to keep the backup copy available before failure. Normally only one copy is forwarded to the private/customer VPN. If the preferred primary stream fails, the receiver uses the valid backup stream; if backup reception is also abnormal, the MVPN control plane may resignal a C- multicast route to restart receiver membership. The mechanism differs from 1:1 cold restoration, which would need to establish a new path after failure. BIERv6 uses per-set BitStrings and a BIFT, so transit routers need not maintain every customer (S,G) state. The exact timing and resignal behavior in C depends on the product implementation; the overall 1+1 dual-root concept is established.
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質問 # 24
In an SDN network, device control planes are deployed centrally. If a node or link in the SDN network fails, which of the following is the optimal protection method?
正解：B
解説：
Exact Extract - Huawei Training Material (Automatic SDN Network O & M, p.22):
"Automatic service recovery: Based on service SLA requirements, NCE recalculates a service path based on SRv6, isolates the faulty node, and automatically restores the faulty service." Huawei Reference Verification:
Huawei's Automatic SDN O & M curriculum describes centralized path computation and controller-driven restoration after faults. For millisecond-level protection, the better design is to compute and install backup FRR forwarding state in advance. A failed link or node can then trigger immediate local switching to the alternate entry on the forwarder, avoiding the delay of reporting the fault, waiting for a controller decision and receiving new entries. Controller recalculation remains useful for later optimization and restoration. Therefore an SDN controller delivering FRR routes ahead of failure is the optimal choice.
Technical Deep Dive:
D is correct. The controller has a global topology view and can calculate primary and backup transport paths based on bandwidth, policy and service SLA. Rather than waiting for a fault before computing everything, it distributes the required FRR backup entries proactively. Upon link-down or BFD notification, the router's forwarding subsystem switches to the preinstalled alternate next hop or tunnel, minimizing customer interruption. Recomputing routes after failure through the controller introduces detection, signaling, calculation and programming delay. Forwarders can compute local routing in distributed architectures, but the question specifies centralized control and asks for the optimal immediate protection. IP FRR, TI-LFA, SR-TE backup paths and VPN FRR are examples of underlying forwarding protections. Supported Huawei NP/ASIC hardware performs fast local switching once the backup forwarding state is installed. Controller-based path optimization can then restore the desired long-term service state.
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質問 # 25
In an intelligent cloud-network scenario, NCE centrally computes and delivers SRv6 Policies. Which statements about the BGP-LS IPv6 design are correct?
Exhibit 15.1 - Original topology/configuration figure
Select all that apply.
正解：A、C、D
解説：
Exact Extract - Huawei Training Material (Automatic SDN Network O & M, p.26):
"BGP-LS: BGP Link-state Protocol, BGP extension, which is used to summarize topology information collected by IGP and send the information to the upper-layer controller. This feature is mainly used when the controller computes paths in a centralized manner." Huawei Reference Verification:
Huawei's Automatic SDN O & M curriculum defines BGP-LS as a BGP extension that summarizes topology information collected by IGP and sends it to a controller for centralized path computation. The intelligent cloud bearer design collects access, aggregation, and core topology, including bandwidth and delay. It uses BGP-LS peering/reporting relationships from ACC through AGG and backbone reporting nodes toward iMaster NCE-IP. In contrast, policies computed by the controller are signaled through the BGP IPv6 SR Policy address family rather than BGP-LS. This distinction establishes A, B, C and excludes D in the depicted hierarchical reporting model.
Technical Deep Dive:
A, B and C are correct for the illustrated architecture. The access and aggregation layers provide IGP- distributed topology and traffic engineering data, including link state, metrics and delay. BGP-LS speakers transport relevant node, link and prefix information toward the backbone reporting devices and NCE. The controller uses this combined topology to compute SRv6 Policy segment lists meeting SLA constraints.
Option D confuses topology reporting with policy distribution: BGP-LS exports network state; BGP IPv6 SR Policy conveys policy information to the headend for traffic steering. A BGP-LS route may encode link, node or prefix attributes but does not replace the SR Policy NLRI. Separating these address families allows a controller to obtain topology information independently of its chosen path-delivery mechanism. PCEP is another technology that can assist computation and LSP management in supported deployments.
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質問 # 26
In the inter-AS VPN Option A network shown, CE1 and CE2 are in the same VPN. LDP and IGP are configured in both AS100 and AS200, and EBGP is configured between the ASBRs. CE1's loopback interface is assigned 10.1.1.1/32. If CE2 can ping CE1, which router assigns the inner label to CE2-to-CE1 packets forwarded by PE2?
Exhibit 45.1 - Original topology/configuration figure
正解：E
解説：
Huawei Reference Verification:
In Huawei inter-AS MPLS VPN Option A, each ASBR runs customer VPN instances and exchanges VPN route information with its opposite ASBR over an ordinary inter-AS IP routing relationship. The ASBR-to- ASBR boundary resembles a CE-PE attachment rather than a single end-to-end MPLS VPN LSP. Within each AS, local MP-BGP advertisements include locally allocated VPN labels. For traffic traveling from CE2 in AS200 toward CE1 in AS100, ASBR2 advertises the CE1 destination route to PE2 using the VPN label allocated by ASBR2. Therefore ASBR2 supplies PE2's inner VPN label.
Technical Deep Dive:
B is correct. CE1 originates route 10.1.1.1/32, which PE1 learns and advertises through VPNv4 toward ASBR1 in AS100. In Option A, ASBR1 exchanges the corresponding ordinary IP route across the inter-AS VPN attachment to ASBR2. ASBR2 then advertises it to PE2 in AS200 as a labeled VPNv4 route and allocates its local VPN label. PE2 pushes this VPN label as the inner label and, where necessary, a public transport label outside it. P2 handles the transport forwarding, while ASBR2 interprets the local VPN context and forwards the packet across the AS boundary. The labels used in AS100 and AS200 need not be the same.
The defining principle of Option A is that VPN state and inter-AS connectivity terminate on both ASBRs, avoiding one continuous end-to-end VPN label stack.
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質問 # 27
The new metro network is anticipated to converge fixed and mobile networks. In this type of network, every device must process services and forward data.
正解：A
解説：
Huawei Reference Verification:
Huawei CloudMetro differentiates network-service functions from the underlying physical forwarding infrastructure. Centralized service and resource management can coexist with distributed forwarding elements. The cloud-based BNG architecture demonstrates this specifically: the vBRAS control plane coordinates subscriber sessions, authentication-related procedures, and service policies, while vBRAS user- plane devices execute high-speed packet forwarding. Thus, sharing one fixed-mobile transport infrastructure does not imply that every intermediate network element must perform subscriber service processing. The architecture assigns distinct responsibilities to control, service-edge, and transit forwarding components.
Technical Deep Dive:
The statement is FALSE. Fixed-mobile convergence requires a coordinated network, not identical service functionality in every router. Service-edge devices including MSEs and BNGs may terminate subscribers, allocate addresses, enforce policies, or maintain customer VPN state. Transit devices primarily carry traffic between access, aggregation, and backbone nodes. An MPLS P router can switch labels without hosting customer VPN routing tables. Likewise, an IPv6 transit router can forward an SRv6 packet by its IPv6 destination without executing the SID's endpoint service behavior. CUPS further separates control-plane subscriber management from data-plane forwarding. Routing CPUs calculate state and install entries, while NP/ASIC forwarding engines conduct line-rate lookups, encapsulation, policing, and queue management.
Independent scaling of subscriber-control systems and packet-forwarding resources is one of the architecture's major advantages. Therefore, the assertion that every device must both process services and forward data is too broad.
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質問 # 28
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H35-831的中合格問題集: https://www.jpshiken.com/H35-831_shiken.html