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| Section | Objectives |
|---|---|
| Topic 1: Enterprise Network Architecture | - Network design principles
|
| Topic 2: IPv6 and Advanced IP Technologies | - IPv6 deployment
|
| Topic 3: Routing and Switching Technologies | - Switching technologies
|
| Topic 4: Data Center and Virtualization Technologies | - VXLAN and overlay networks
|
| Topic 5: Network Automation and Programmability | - SDN and automation
|
| Topic 6: WAN and VPN Technologies | - MPLS fundamentals
|
| Topic 7: Network Security and QoS | - QoS mechanisms
|
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NEW QUESTION # 191
You need to configure smart policy routing on the router to specify that specific traffic is forwarded through an interface. When policy-based routing is applied, what are the two most typical types of information that can be used to forward traffic along a particular path?
Answer: A
NEW QUESTION # 192
Which of the following is the mapping between VNIs and BDs in VXLAN implementation?
Answer: C
Explanation:
In Huawei'sVXLAN implementation, the typical mapping betweenVNIs (VXLAN Network Identifiers) andBDs (Bridge Domains)is:
1:1 mapping- each VNI is uniquely associated with a single bridge domain.
This allows properMAC learning and forwardingin the data plane for isolated tenant traffic.
Other mappings (N:1, 1:N, N:M) may be technically possible butnot recommendedor supported in most enterprise deployments.
Correct answer: B. 1:1
NEW QUESTION # 193
Which of the following statements regarding OSPF neighbor relationship faults is incorrect?
Answer: B
Explanation:
Understanding OSPF Neighbor States
OSPF (Open Shortest Path First) establishes neighbor relationships through several states:
1## Down: No Hello packets received.2## Init: Router receives Hello packets but its own Router ID is missing in the received packets.3## 2-Way: Routers see each other in Hello packets. (Stable state for non- DR/non-BDR routers).4## ExStart: Routers start exchanging LSAs but may face MTU mismatches.5## Exchange: Routers send Database Description (DBD) packets to synchronize link-state databases.6## Loading: Routers exchange Link-State Requests (LSRs) & Updates (LSUs) to fully sync.7## Full: Routers are fully synchronized.
Analysis of the Answer Choices
# A. For non-DR and non-BDR routers on an Ethernet link, the 2-Way state is acceptable.
* Correct: Non-DR/Non-BDR routers remain in 2-Way state since they don't need to form full adjacency.
# B. The Init state indicates that the router has received Hello packets from its neighbors, but the received Hello packets do not contain the OSPF RID of the receiving router.
* Correct: If an OSPF router receives a Hello but does not see its own Router ID, it stays in the Init state.
# C. The ExStart state indicates that two neighbor routers have inconsistent MTUs or the same OSPF Router ID (RID).
* Correct: If MTUs mismatch or RIDs conflict, the DBD exchange fails, causing routers to remain in ExStart state.
# D. The Attempt state indicates that the router does not send unicast Hello packets to configured neighbors.
* Incorrect:
* In Attempt state, routers send unicast Hello packets to manually configured neighbors (common in NBMA networks).
* If no Hello responses are received, they remain in Attempt state, but they DO send Hellos.
Real-World Application
* OSPF Troubleshooting: Identifying routers stuck in Init or ExStart states can point to MTU mismatches or neighbor misconfigurations.
* NBMA Networks (Frame Relay, DMVPN): Manually configured neighbors may stay in Attempt state if Hello packets are lost.
# Reference: Huawei HCIE-Datacom Study Guide - OSPF Neighbor States & Troubleshooting
NEW QUESTION # 194
In 6PE and 6VPE networking, no VPN instance needs to be created on PEs.
Answer: A
Explanation:
Understanding 6PE & 6VPE in MPLS Networks
6PE (IPv6 Provider Edge) and 6VPE (IPv6 VPN Provider Edge) are MPLS-based solutions that allow IPv6 traffic to be carried over an MPLS IPv4 core network without requiring the entire backbone to support IPv6.
# 6PE (IPv6 over MPLS - No VPN)
* Used for global IPv6 routing without VPN segmentation.
* No need for VRFs (VPN Routing and Forwarding instances) because IPv6 prefixes are handled natively.
# 6VPE (IPv6 VPN over MPLS - Supports VPNs)
* Extends MPLS L3VPN to support IPv6 routing inside VPN instances.
* Uses MP-BGP VPNv6 to distribute IPv6 prefixes inside MPLS VPNs.
Why is the Answer TRUE?
# No VRFs are required for 6PE:
* 6PE only needs BGP labeled IPv6 routes in the global routing table.
* IPv6 prefixes are carried using MPLS labels without VPN segmentation.
# VRFs are required for 6VPE, NOT for 6PE:
* 6VPE requires VPN instances (VRFs) for IPv6 L3VPNs, but 6PE does not.
# Real-World Application:
* 6PE is used in large ISP networks where IPv6 deployment is needed but without VPN separation.
* 6VPE is used for enterprise MPLS VPNs, allowing customers to have isolated IPv6 routing tables.
# Reference: Huawei HCIE-Datacom Guide - MPLS IPv6 Transition Technologies (6PE & 6VPE)
NEW QUESTION # 195
Refer to the following command output on the router R1. Which of the following statements isincorrect?
< R1 > display interface Tunnel
Tunnel0/0/0 current state : UP
Line protocol current state : UP
Last line protocol up time : 15:21:23 UTC-08:00
Description: ! 0.0.3.3
Route Port, The Maximum Transmit Unit is 1500
Internet Address is 20.1.1.1/24
Encapsulation is TUNNEL, loopback not set
Tunnel source 10.0.1.1 (LoopBack0), destination 10.0.3.3
Tunnel protocol/transport GRE/IP, key disabled
keepalive disabled
Checksumming of packets disabled
Current system time: 15:21:37-08:00
300 seconds input rate 0 bits/sec, 0 packets/sec
300 seconds output rate 0 bits/sec, 0 packets/sec
13 seconds input rate 0 bits/sec, 0 packets/sec
13 seconds output rate 448 bits/sec, 0 packets/sec
9 packets output, 824 bytes
0 output error
Input bandwidth utilization : -
Output bandwidth utilization : -
Answer: C
Explanation:
Comprehensive and Detailed In-Depth Explanation:
Analyzing the output:
A). Key authentication is disabled for the tunnel:Correct. The output explicitly states " key disabled " .
B). The destination IP address of the tunnel is 10.0.3.3:Correct. The output shows " destination 10.0.3.3 " .
C). The tunnel is a GRE tunnel:Correct. The output states " Tunnel protocol/transport GRE/IP " .
D). Keepalive detection is enabled on the tunnel:Incorrect.The output clearly shows " keepalive disabled " .
Therefore, the correct answer isDbecause the tunnel doesnot have keepalive enabled.
Reference:
Huawei HCIE Datacom Official Certification Guide
Huawei GRE Tunnel Configuration Guide
NEW QUESTION # 196
......
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