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Huawei H35-831 certification exam is intended for experienced IT professionals who have a strong understanding of data communication in carrier networks. Candidates who pass H35-831 exam will have demonstrated their ability to design, implement, and troubleshoot complex data communication networks in carrier environments. HCIE-Datacom-Carrier (Written) V1.0 certification is highly valued in the IT industry and can lead to many career opportunities, including network engineer, network architect, and network administrator roles in carrier network environments.
Huawei H35-831 Exam is intended for professionals who have a sound knowledge of data communication and carrier networks. The candidates who take H35-831 exam are typically network designers, network architects, network engineers, and network administrators who are responsible for designing, deploying, and managing carrier networks. H35-831 exam tests the candidates' abilities in developing and implementing strategies for network optimization, network security, and network quality of service.
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Huawei H35-831 (HCIE-Datacom-Carrier (Written) V1.0) Certification Exam is a valuable certification for professionals in the telecommunications industry. HCIE-Datacom-Carrier (Written) V1.0 certification validates the candidate's ability to design, plan, and implement datacom carrier networks effectively. HCIE-Datacom-Carrier (Written) V1.0 certification is recognized globally and is considered to be one of the most prestigious certifications in the industry. HCIE-Datacom-Carrier (Written) V1.0 certification provides candidates with the skills and knowledge required to work with the latest networking technologies and tools.
NEW QUESTION # 54
In the network shown, RT4 and RT5 function as ASBRs and import IS-IS routes into OSPF. Only OSPF is used for interworking between RT4 and RT5. The link costs are shown in the figure. The key configurations of RT4 and RT5 are as follows:
Exhibit 36.1 - Original topology/configuration figure
Exhibit 36.2 - Original topology/configuration figure
Answer: A
Explanation:
Huawei Reference Verification:
Huawei OSPF External Type 2 route selection considers the external metric first; when E2 metrics are equal, internal cost toward the advertising ASBR serves as an additional comparison. RT4 and RT5 import the IS-IS destination as OSPF Type 2 external routes with the explicitly configured external metric of 10. The illustrated OSPF paths to RT4 and RT5 have equal internal cost from RT1. Therefore RT1 installs two equal- cost forwarding paths to 6.6.6.6. The differing IS-IS link costs to RT6 do not override the imported OSPF Type 2 metric. Thus B is correct.
Technical Deep Dive:
B is correct. RT4 and RT5 are ASBRs because they inject routes learned in IS-IS into OSPF. Both use
`import-route isis 1 cost 10 type 2`. As a result the advertised E2 cost for 6.6.6.6 is 10 from either ASBR. RT1 can reach RT4 through RT2 and RT5 through RT3, and the illustrated internal OSPF costs for those alternatives are equal. The two paths therefore qualify for ECMP, unlike a single preferred next hop. The original IS-IS costs (20 on the RT4 side and 10 on RT5) are internal to the source routing domain; they are not the metric used after the explicit E2 import cost is assigned. Huawei commands `display ospf routing`,
`display ospf lsdb ase` and `display ip routing-table 6.6.6.6` help confirm the route type and next hops. ASIC forwarding can distribute traffic across installed ECMP entries.
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NEW QUESTION # 55
Which of the following statements regarding the telco cloud network are correct?
Select all that apply.
Answer: A,B,C,D
Explanation:
Huawei Reference Verification:
Huawei's Telco Cloud Transport architecture connects cloud workloads through spine-leaf fabrics, DC gateways, PEs, and centrally managed service networks. Route preference can distribute north-south traffic among PEs to avoid concentrated utilization. Separate management/storage and production networks improve operational isolation. A flattened spine-leaf topology provides multiple equal-cost routed paths and supports horizontal expansion. Where existing gateway appliances cannot carry projected north-south throughput, additional DC GWs can increase aggregate egress capacity when upstream routing and connectivity are correspondingly engineered. These points support all four intended design statements, although isolation must not be confused with an unconditional security guarantee.
Technical Deep Dive:
A, B, C, and D describe the intended telco-cloud engineering model. With multiple single-homed gateways, BGP preference and next-hop policies can steer traffic so one PE does not become an unnecessary bottleneck.
Physically separating management/storage and service functions reduces shared fault and attack exposure; access controls and other safeguards remain necessary because separation alone does not guarantee availability. A spine-leaf fabric uses multiple equal-cost underlay paths, predictable scale-out and flexible server/VNF attachment. Additional DC gateways increase north-south capacity when their upstream links and route-selection policies distribute flows appropriately. VXLAN with EVPN can isolate tenants over an IP underlay and provide distributed gateway service. Supported ASICs accelerate VXLAN encapsulation, IP lookups and ECMP decisions. The overarching objective is to scale bandwidth, reliability, segmentation and automation together, rather than merely increasing switch or gateway port capacity. Option B's phrase guaranteeing overall security should be softened.
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NEW QUESTION # 56
Which of the following statements regarding EVPN on a 5G transport network is incorrect?
Answer: C
Explanation:
Huawei Reference Verification:
Huawei EVPN L3VPN advertises IPv4/IPv6 customer prefixes using EVPN IP Prefix routes, while VPN- instance routing contexts maintain the reachability needed for customer forwarding. The command `advertise l2vpn evpn` enables the applicable VPN-instance routes to be advertised through EVPN. Route import and local VPN-instance visibility may involve EVPN and VPNv4-related display contexts depending on the device and release. The answer key identifies A as incorrect because it imposes an absolute restriction that EVPN L3VPN routes appear only in the EVPN table. Note that EVPN Type 5 NLRI and VPNv4 NLRI are distinct BGP address families, so the exact global-table display assertion requires careful release-specific interpretation.
Technical Deep Dive:
A is the intended incorrect choice, with technical qualification. EVPN Type 5 IP Prefix routes distribute customer subnets for L3VPN services over EVPN transport. They can be imported into a local VPN routing context, where forwarding routes are programmed for the service. Huawei commands include `display bgp evpn all routing-table`, `display bgp vpnv4 all routing-table`, `display bgp vpnv4 vpn-instance vpn1 routing- table`, and `display ip routing-table vpn-instance vpn1`. These inspect different address-family and VPN- instance views. The intended curriculum item rejects the unconditional claim that EVPN L3VPN routing information exists only in one EVPN table. Nevertheless, EVPN Type 5 advertisements do not automatically turn into VPNv4 NLRI in every global BGP table; output depends on actual import and advertisement configuration. Option C contains a common typing confusion: the command is `advertise l2vpn evpn` with lowercase letter L, not the digits '12'. Option D's feature view is also product-release dependent. Publish a release qualification for this item.
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NEW QUESTION # 57
Which of the following represent the primary functions of BGP-LS in Huawei SRv6 Policy?
Answer: D
Explanation:
Exact Extract - Huawei Training Material (Automatic SDN Network O & M, p.29):
"BGP-LS: A method of collecting network topology information, which makes it easier and more efficient to collect topology information. BGP-LS Route: A medium that carries network topology information. There are three types of BGP-LS routes, which are used to carry node, link, and route prefix information respectively.
The three types of routes work together to transmit topology information." Huawei Reference Verification:
Huawei's BGP-LS protocol-concepts module describes BGP-LS as a mechanism for collecting topology information through BGP. It defines three principal link-state NLRI categories carrying node information, link information and route-prefix information. An IGP learns the network topology, and BGP-LS speakers summarize and export it to a controller for centralized traffic-engineering computation. SRv6 Policy delivery is instead performed using BGP SR Policy mechanisms or other supported southbound interfaces, not ordinary BGP-LS topology advertisement. Therefore the function sought is topology and prefix collection.
Technical Deep Dive:
C is correct. BGP-LS removes the need for a centralized controller to run every IGP protocol directly. OSPF and IS-IS still build their routing-domain LSDBs, but BGP-LS speakers export node, link and prefix attributes in a normalized form. The controller assembles a multi-domain topology, combines TE attributes such as bandwidth and delay, and computes optimized SRv6 service paths. BGP-LS is not primarily an ordinary IPv4
/IPv6 unicast route delivery channel, nor is it the BGP SR Policy address family used to distribute headend policies. BGP-LS supplies network state; policy signaling supplies traffic-steering instructions. The training material explicitly states that a BGP-LS route is a medium for node, link and prefix topology information.
This is why the topology-and-prefix selection is the unambiguous answer.
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NEW QUESTION # 58
In the distributed telco-cloud network shown, traffic is sent from the external network to the VNF. The route configurations on the relevant DC GW are shown. How is the traffic forwarded within the telco-cloud network, from the DC GW to the leaf node?
Exhibit 14.1 - Original topology/configuration figure
Answer: C
Explanation:
Huawei Reference Verification:
Huawei's underlay/overlay architecture distinguishes VXLAN tenant transport from the IP underlay that provides VTEP reachability. In this topology the DC GW's static VPN route resolves through next-hop addresses belonging to subnet 10.1.1.0/24. That subnet is attached to VBDIF1 and bridge domain BD1, which carries the corresponding Layer 2 VXLAN service. The VBDIF supplies a routed interface into a bridge domain, but the resulting transport from DC GW VTEP to leaf VTEP is an Ethernet frame encapsulated in VXLAN. Consequently the forwarding between these VXLAN endpoints is through a Layer 2 VXLAN tunnel.
Technical Deep Dive:
A is correct. The gateway performs a route lookup in VPN instance vpn1 and resolves the selected next-hop IP through the VBDIF1/BD1 connectivity. ARP/EVPN host reachability determines the Layer 2 destination associated with the remote leaf VTEP. The gateway encapsulates the resulting Ethernet frame using VXLAN and forwards the outer IP packet across the routed underlay. The leaf decapsulates the VXLAN packet and forwards traffic to the VNF. Using VBDIF for the route lookup does not by itself turn this particular transport into a Layer 3 VXLAN tunnel; the relevant BD carries the Layer 2 overlay. The alternative MPLS-label answer assumes a different transport encapsulation, while pure unencapsulated IP forwarding ignores the VXLAN fabric. On supported Huawei ASICs, VXLAN encapsulation, MAC lookup, and tunnel forwarding can occur in dedicated packet-processing hardware.
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NEW QUESTION # 59
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