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Huawei H12-831_V1.0 (HCIP-Datacom-Advanced Routing & Switching Technology V1.0) Certification Exam is a professional certification exam that is designed for individuals who have experience with routing and switching technologies. H12-831_V1.0 exam covers a wide range of topics and is recognized by many industries as a valuable certification for professionals in the networking industry. If you are interested in pursuing a career in advanced routing and switching technology, the Huawei H12-831_V1.0 Certification Exam is an excellent way to demonstrate your knowledge and skills in this field.
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Huawei H12-831_V1.0-ENU (HCIP-Datacom-Advanced Routing) is a certification program designed to equip IT professionals with advanced knowledge and skills in the field of data communications. HCIP-Datacom-Advanced Routing & Switching Technology V1.0 certification is offered by Huawei, a leading technology company that provides innovative solutions in telecommunications and networking. The HCIP-Datacom-Advanced Routing certification is designed to help IT professionals become experts in advanced routing technologies and protocols such as OSPF, BGP, and IS-IS.
NEW QUESTION # 60
A campus deploys both IPv4 and IPv6 networks for service testing, and runs IS-IS to realize network interconnection. The IS-IS routing protocol has good scalability and is widely used in the existing network. Which of the following statements is true about IS-IS scalability?
Answer: A,B,C
NEW QUESTION # 61
In the OSPF network shown in the figure, area 1 is an NSSA area, area 2 is a common area, and R4 imports external route 10.0.4.4/32. The Router ID of each device is 10.0.0.X, where X is the device number.
The "asbr-summary 10.0.4.0 255.255.255.0" command is configured in the OSPF processes of R1 and R3. Which of the following routers have routing entries for 10.0.4.0/24 in their routing tables? (Multiple choice)
Answer: C,D
NEW QUESTION # 62
As shown in the figure, CE1 sends traffic of VPN1 to PE1. After receiving the traffic, PE1 forwards the traffic. Which of the following statements are true?
Answer: A,B,C
Explanation:
In Huawei's BGP/MPLS IP VPN forwarding model:
# Traffic Flow:
* CE1 sends an IPv4 packet (unencrypted, unlabeled) to PE1 .
* PE1 determines the VPN routing table (VRF) based on the incoming interface.
* PE1 performs a lookup in the VPN routing table for the destination.
* PE1 finds the VPNv4 route (with BGP label) and also gets the LDP tunnel label for the next-hop PE router.
* PE1 pushes two labels onto the packet:
* Inner label: VPN label (BGP label for VPN route)
* Outer label: LDP label (tunnel label to PE2)
# Option A: PE1 searches for a VPN label based on the tunnel ID and adds a label header to the packet.
# Incorrect - VPN labels are not searched based on tunnel ID .
* The VPN label is derived from VPNv4 BGP route , not from tunnel ID.
# Option B: PE1 checks the forwarding table corresponding to VPN1 and obtains the tunnel ID.
# Correct -
* PE1 first determines the VRF based on interface binding.
* It then uses that to look up the VPNv4 route and retrieves the tunnel information (e.g., next-hop PE).
# Option C: PE1 uses the LDP label corresponding to the Next_Hop address of a VPNv4 route as the outer label of a labeled packet.
# Correct -
* The outer label is the LDP label for the LSP to the next-hop PE (e.g., PE2).
# Option D: PE1 ' s interface that receives the traffic is bound to VPN1.
# Correct -
* In MPLS VPN, PE routers bind CE-facing interfaces to VRFs (VPN routing tables).
* This is how the device knows which VPN instance the traffic belongs to.
# Final answer: B, C, D
Official Huawei Extract:
" In BGP/MPLS IP VPNs, PE devices use interface bindings to associate CE traffic with VRFs. When forwarding packets, PE devices push two labels: a VPN label (from BGP) and a transport label (from LDP) to reach the next-hop PE. "
- [Huawei HCIA-Datacom Certification Guide - MPLS VPN Packet Forwarding Chapter]
NEW QUESTION # 63
MPLS determines the upstream and downstream relationships based on the data forwarding direction.
MPLS labeled packets are sent from upstream LSRs and received and processed by downstream LSRs.
Similarly, MPLS labels are distributed from upstream LSRs to downstream LSRs one by one.
Answer: B
Explanation:
This statement is false due to an incorrect description of how MPLS label distribution works .
* # Upstream/Downstream Relationship: In MPLS, the upstream LSR is the one sending data toward the destination , and the downstream LSR is the one closer to the destination .
* # Incorrect Claim: The statement says " labels are distributed from upstream to downstream " , which is wrong .
# Correct behavior: Labels are distributed from downstream to upstream .
Each LSR advertises a label to its upstream neighbor for a specific FEC (Forwarding Equivalence Class).
This is how Label Distribution Protocol (LDP) works.
# Official Reference from Huawei:
" MPLS labels are distributed from the downstream LSR to the upstream LSR. Data is forwarded from the upstream to the downstream, but labels flow in the opposite direction. "
- [Huawei HCIA-Datacom Guide - MPLS Chapter]
NEW QUESTION # 64
Configuring DHCP Snooping can be used to prevent imitators from attacking. Which of the following steps should be included in the configuration process? (Multiple choice)
Answer: A,B,C,D
NEW QUESTION # 65
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