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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Campus Network Planning and Deployment | 23% | - Campus Network Service Deployment
|
| Topic 2: Advanced Routing and Switching Technologies | 37% | - Network Quality and Optimization
|
| Topic 3: Bearer WAN Planning and Deployment | 15% | - Bearer Network Architecture
|
| Topic 4: Network Automation Technologies and Practice | 17% | - Huawei Automation Solutions
|
| Topic 5: WAN Interconnection Network Planning and Deployment | 8% | - WAN Service Optimization
|
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NEW QUESTION # 77
MQC, like PBR-can only be called under the device's Layer 3 interface.
Answer: A
NEW QUESTION # 78
In 6PE networking, the shared explicit null label function can be enabled on routers to reduce the number of required MPLS labels. With this function, a router assigns a label with the value (enter only digits) to all 6PE routes.
Answer:
Explanation:
0In 6PE (IPv6 over MPLS for Provider Edge), the shared explicit null label value is 0. When this function is enabled, the PE router assigns label 0 (IPv4 Explicit Null) to all IPv6 routes, reducing the label space consumption. This is known as label 0 reuse for IPv6 forwarding over MPLS.Exact Extract - HCIE-Datacom IPv6/MPLS Integration Section:"To optimize label usage in 6PE deployments, shared explicit null label (label
0) can be assigned to all 6PE routes."
Reference:
Huawei HCIE-Datacom Guide - IPv6 over MPLS (6PE and 6VPE)
Huawei Training Manual - MPLS IPv6 Label Assignment
NEW QUESTION # 79
As shown in the figure, PE1 establishes an EVPN peer relationship with each of PE2 and PE3. When the network is initialized, CE1 sends an ARP request packet.
Which of the following statements are correct about how a PE processes the packet?
Answer: A,B,C
Explanation:
Understanding EVPN (Ethernet VPN) and ARP Request Handling
# What is EVPN?
* EVPN (Ethernet VPN) is a BGP-based control plane for VXLAN that improves Layer 2 & Layer 3 network scalability.
* Eliminates flood-and-learn behavior using BGP MAC/IP advertisement routes.
# Why is an ARP Request Sent?
* When CE1 (192.168.1.1/24) wants to communicate with CE2 (192.168.1.2/24), it sends an ARP request to discover the MAC address of CE2.
# How Does EVPN Process the ARP Request?1## PE1 receives the ARP request from CE1.2## PE1 sends a MAC/IP advertisement route (Type 2 EVPN route) to inform PE2 and PE3 of CE1's MAC address.3## PE1 forwards the ARP request as BUM (Broadcast, Unknown unicast, and Multicast) traffic to PE2 and PE3.4## PE3 (Designated Forwarder - DF) forwards the packet to CE2.5## PE2 (Non-DF) does NOT forward the packet to avoid loops.
Analysis of the Answer Choices:
# A. When forwarding the packet to PE3, PE1 needs to add the BUM traffic label allocated by PE3 to the packet.
* Correct:
* BUM (Broadcast, Unknown Unicast, Multicast) traffic in EVPN is encapsulated with a special label assigned by the receiving PE.
* PE1 adds the BUM traffic label for PE3 before sending the ARP request.
# B. PE1 sends a MAC/IP advertisement route carrying the MAC address of CE1.
* Correct:
* EVPN Type 2 MAC/IP advertisement routes are sent to inform other PEs of CE1's MAC/IP binding.
# C. PE2 forwards the packet to CE1.
* Incorrect:
* PE2 is the Non-Designated Forwarder (Non-DF) and does NOT forward BUM traffic to avoid loops.
# D. PE3 forwards the packet to CE1.
* Correct:
* PE3 is the Designated Forwarder (DF) for this segment, meaning it forwards the ARP request to CE2.
# Reference: Huawei HCIE-Datacom Guide - EVPN BGP MAC/IP Advertisement and BUM Traffic Handling Real-World Application:
* Data Center Interconnect (DCI): EVPN prevents excessive ARP flooding across VXLAN networks.
* Enterprise Campus Networks: Uses EVPN VXLAN to scale Layer 2 connectivity across multiple locations.
NEW QUESTION # 80
Which address prefix in the following options indicates that the address is globally unique and globally routable among unicast addresses in IPv6, similar to a public address in IPv4?(). Single choice questions).
Answer: C
NEW QUESTION # 81
Flavors can be used to enhance SRv6 instructions to meet more diversified service requirements. Which of the following are flavors? (Select all that apply)
Answer: A,B,D
Explanation:
InSRv6 (Segment Routing over IPv6),flavorsare extensions to standard SRv6 instructions that define how theSegment Routing Header (SRH)is handled at specific points:
PSP (Penultimate Segment Pop): Instructs thepenultimate nodeto remove the SRH before reaching the last node ## USD (Ultimate Segment Decapsulation): Instructs thefinal segmenttoremove the SRH and IPv6 header, exposing the payload ## PSD (Penultimate Segment Decapsulation): Instructs thepenultimate nodeto remove the SRH and deliver the payload ## USP (Ultimate Segment Pop)isnot a standard flavorin Huawei SRv6 implementations ## Correct answers: A, B, D
NEW QUESTION # 82
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