Huawei HCIE-Datacom V1.0 - H12-891_V1.0 FREE EXAM DUMPS QUESTIONS & ANSWERS]

Question 1

Which of the following statements is correct about 6PE and 6VPE?

A. In 6VPE networking, IPv6 addresses of a CE can be reused. B. In 6VPE networking, no VPN instance needs to be created on PEs. C. In 6PE networking, IPv6 addresses of a CE can be reused. D. In 6PE networking, VPN instances need to be created on PEs.

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Correct Answer: A Vote an answer

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Question 2

A network administrator runs the display telemetry destination command on a device to check information about a destination group that sampled data is sent to. The command output is as follows. Which of the following statements is incorrect?
[~CE-telemetry-sensor-group-Sensor1]display telemetry destination
Dest-name Dest-addr Dest-port State Vpn-name Protocol
Dest1 192.168.56.1 20000 RESOLVED - GRPC

A. The destination group name is Dest1. B. The gRPC protocol is used for data push. C. The IP address of the destination group is 192.168.56.1 D. VPN encapsulation is used for data push.

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Correct Answer: D Vote an answer

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Question 3

The display current-configuration command displays the running configurations in memory.

A. FALSE B. TRUE

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Correct Answer: B Vote an answer

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Question 4

Fill in Blank
During the configuration of L3VPNv4 over SRv6 BE, if an RR is deployed in the SR domain, which command must be run on the RR to ensure that the PEs at both ends can correctly learn VPNv4 routes?

Discussion 0

Correct Answer:

peerretainroutetargetall
Explanation:
Understanding L3VPNv4 Over SRv6 BE
🔹 What is L3VPNv4?
L3VPNv4 (Layer 3 VPN over IPv4) allows MPLS-based VPN services over an SRv6 backbone.
Uses MP-BGP (Multiprotocol BGP) to distribute VPN routes.
🔹 Why is an RR (Route Reflector) Needed?
An RR simplifies BGP route exchange between multiple PEs (Provider Edge routers).
Without proper configuration, RRs may filter VPNv4 routes, preventing PEs from learning routes correctly.
Why is the Command peer retain-route-target all Needed?
✅ Ensures that the RR retains all VPNv4 routes.
✅ Prevents the RR from filtering route targets (RTs), allowing full VPN reachability.
✅ Without this command, the RR might not reflect all VPNv4 routes, causing connectivity issues.
Real-World Application:
Enterprise MPLS VPNs: Ensures correct BGP route reflection in an SRv6-based L3VPN.
Carrier Networks: Helps service providers maintain full BGP VPN route distribution.
✅ Reference: Huawei HCIE-Datacom Guide - BGP Route Reflectors in L3VPN over SRv6

Question 5

In a scenario where a VXLAN tunnel is dynamically established through BGP EVPN, run the command on the VTEP to view BGP EVPN routes. The route entries shown in the following figure are displayed. Which of the following statements about these routing entries are correct?
Network (EthTagId/IP Prefix/IP PrefixLen)
NextHop
*>i 0:172.16.2.0:24 1.1.1.2
*>i 0:172.16.13.0:24 1.1.1.2
*>i 0:192.168.122.0:30 1.1.1.2

A. These routes are Type 2 routes and carry host IP addresses. B. These routes carry the L3VNI. C. These routes are Type 5 routes and carry network segment or mask information. D. These routes carry the L2VNI.

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Correct Answer: B,C Vote an answer

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Question 6

Drag the IPsec functions on the left to the corresponding function description on the right.

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Correct Answer:

Question 7

On a virtualized network deployed using iMaster NCE-Campus, after creating VNs, you need to configure inter-VN communication. Which of the following configurations is used to achieve VN communication?

A. Create a static route for the VPN instance corresponding to the VN. B. Configure traffic filtering. C. Deploy a routing policy. D. Deploy OSPF for the VPN instance corresponding to the VN.

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Correct Answer: C Vote an answer

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Question 8

IPsec uses an asymmetric encryption algorithm to encrypt the symmetric algorithm key, which it uses to encrypt/decrypt data, ensuring security and performance.

A. FALSE B. TRUE

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Correct Answer: B Vote an answer

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Question 9

In a scenario where a VXLAN tunnel is dynamically established through BGP EVPN, which of the following fields is NOT carried in BGP EVPN Type 5 routes?

A. GW IP Address B. Route Distinguisher C. IP Prefix Length D. MAC Address

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Correct Answer: D Vote an answer

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Question 10

What is the router ID length supported by OSPFv3?

A. 100 bits B. 64 bits C. 128 bits D. 32 bits

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Correct Answer: D Vote an answer

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Question 11

The IS-IS Level-1 neighbor relationship is not established between R3 and R4. Referring to the following information, what is the possible cause?

A. The area IDs of R3 and R4 are different. B. The circuit types of the interfaces connecting R3 and R4 do not match. C. The IS-IS levels of R3 and R4 do not match. D. The IIH authentication between R3 and R1 fails.

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Correct Answer: A Vote an answer

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