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| Section | Weight | Objectives |
|---|---|---|
| IPv6 Technologies | 8% | - IPv6 Deployment
|
| Network Reliability and Protection | 7% | - High Availability Design
|
| Network Automation and SDN | 5% | - Automation Technologies
|
| Carrier IP Network Architecture | 10% | - Carrier Network Evolution
|
| Network Operation and Maintenance | 5% | - Monitoring and Troubleshooting
|
| IGP Advanced Technologies | 15% | - OSPF and IS-IS Advanced Features
|
| BGP Advanced Technologies | 20% | - Carrier-Grade BGP
|
| Network Service Technologies | 10% | - Carrier Services
|
| MPLS and Segment Routing | 20% | - Carrier Transport Technologies
|
Um die Huawei H35-831 Zertifizierungsprüfung zu bestehen, ist es notwendig, dass man entsprechende Prüfungsunterlagen benutzt. Unser Fast2test wird Ihnen so schnell wie möglich die Forschungsmaterialien für Huawei H35-831 Zertifizierungsprüfung bieten, die von großer Wichtigkeit ist. Unsere IT-Experten sind erfahrungsreich. Die von ihnen bearbeiteten Forschungsmaterialien sind den echten Prüfungen sehr ähnlich, fast identisch. Fast2test ist eine spezielle Website, die Prüflingen Hilfe bem Bestehen der Huawei H35-831 Zertifizierungsprügung bietet.
38. Frage
Which of the following statements regarding EVPN on a 5G transport network is incorrect?
Antwort: A
Begründung:
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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39. Frage
The figure depicts an inter-AS EVPN Option B network and the EVPN configuration between ASBR2 and PE2. Which device is the next hop for the route that ASBR2 advertises to PE2?
Exhibit 54.1 - Original topology/configuration figure
Antwort: D
Begründung:
Huawei Reference Verification:
Huawei's inter-AS EVPN Option B model exchanges EVPN routes across ASBRs and readvertises them to local PEs. The intended border-gateway forwarding model uses the receiving ASBR as the next hop for routes sent into its own AS, allowing local PEs to resolve remote EVPN services toward the local AS boundary. In the depicted deployment ASBR2 advertises the route toward PE2 and is the forwarding next hop under the intended Option B next-hop processing. This depends on the actual BGP next-hop rewrite or route policy:
generic IBGP re-advertisement of an EBGP-learned route does not automatically replace the next-hop attribute in every configuration.
Technical Deep Dive:
A is the intended answer. PE1 originates EVPN service reachability inside AS1. The route passes to ASBR1, crosses the inter-AS exchange to ASBR2 in AS2 and is advertised toward PE2. In Option B the ASBR boundary acts as a forwarding and service-route exchange point. The receiving ASBR can rewrite the BGP next hop to itself so local routers resolve the route through the local transport network toward that border. PE2 thus uses ASBR2 as the service route's next hop in the intended design. The spine or internal P router merely provides underlay transport; PE1 is the remote originator but not the local transport boundary. On VRP
`display bgp evpn all routing-table` reveals the received next hop and route state. For a real configuration, verify `next-hop-local` or equivalent policy because an ordinary IBGP advertisement may preserve the EBGP- learned next hop unless configured or required by the solution.
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40. Frage
Assume Flex-Algo is configured on a device and a tunnel policy is set for the device to preferentially select a Flex-Algo-based SR-MPLS BE tunnel. Under which of the following conditions would a VPN route recurse to the Flex-Algo-based SR-MPLS BE tunnel?
Select all that apply.
Antwort: A,C
Begründung:
Huawei Reference Verification:
Huawei uses a BGP Color Extended Community to associate service routes with transport characteristics and a BGP next-hop address to identify the transport destination. A tunnel policy can prefer SR-MPLS Best Effort tunnels calculated using Flex-Algo. The service route's color identifies the desired algorithm or constrained transport slice, and the next hop identifies the endpoint that the tunnel must reach. The Flex-Algo algorithm ID defines how the routing topology is calculated, while link affinity influences eligible links within that algorithm. Color and BGP next hop are the route-level recursion matching information; accordingly B and C are correct.
Technical Deep Dive:
B and C are correct. A Flex-Algo definition builds a separate constrained SPF topology using algorithm- specific attributes such as metrics and administrative group restrictions. Tunnel policies can map service colors to appropriate Flex-Algo paths. When a VPN route arrives, its BGP Color Extended Community describes the desired transport behavior, and its next-hop address identifies the remote PE or tunnel endpoint.
The device matches that pair against eligible tunnels and installs the resulting forwarding recursion. Affinity (A) can control which physical links participate in the algorithm-specific topology, but is not the route's direct matching attribute. Algorithm ID (D) identifies the computation algorithm rather than independently defining the BGP route recursion key. After resolution, forwarding NP/ASIC hardware applies the programmed SR- MPLS labels and next-hop group. This separation allows a carrier to provide differentiated transport characteristics without manually defining an explicit LSP for every VPN route.
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41. Frage
Which of the following statements regarding the telco cloud network are correct?
Select all that apply.
Antwort: A,B,C,D
42. Frage
The system IDs for the same IS-IS device in separate processes can be identical.
Antwort: A
Begründung:
Huawei Reference Verification:
Huawei IS-IS multi-process operation keeps separate link-state databases, neighbor state, and route calculations for distinct routing-process instances. IS-IS system IDs must be unique among nodes within the same applicable routing domain to avoid conflicting LSP identities. However, using the same system ID in independent IS-IS processes on one router is permissible when their associated routing instances do not collide. The process number distinguishes the local protocol instance; the system ID identifies the device within the relevant IS-IS domain. Accordingly the statement is true.
Technical Deep Dive:
A is TRUE. An IS-IS NET contains an area portion, a six-byte system ID, and an N-selector, typically 00. For example, 49.0001.0000.0000.0001.00 contains system ID 0000.0000.0001. Router identities must be unique within a shared LSDB because duplicate system IDs cause LSP collisions and unstable topology representation. A device can nevertheless run multiple independent IS-IS processes with separate interfaces and databases. Reusing the system ID across those distinct processes does not inherently violate the uniqueness requirement as long as each routing domain remains unique internally. This distinction is between the globally configured value on the physical device and its meaning inside a protocol domain. On VRP,
`display isis brief`, `display isis peer` and `display isis lsdb` allow engineers to check process, adjacency and LSP state.
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43. Frage
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