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| Section | Objectives |
|---|---|
| WAN and VPN Technologies | - MPLS fundamentals
|
| IPv6 and Advanced IP Technologies | - IPv6 deployment
|
| Enterprise Network Architecture | - Network design principles
|
| Routing and Switching Technologies | - Switching technologies
|
| Network Automation and Programmability | - SDN and automation
|
| Network Security and QoS | - QoS mechanisms
|
| Data Center and Virtualization Technologies | - VXLAN and overlay networks
|
>> H12-891_V1.0 Valid Exam Topics <<
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NEW QUESTION # 30
/R1Jospf1lRL-osp- jarea.2[RLospf-1-arca-0002]network1001310000 As shown in the configuration, the administrator configured OSPF but RI on R1 You cannot learn routes for other routing rings. Then the possible cause is the question).
Answer: B,C
NEW QUESTION # 31
You have developed a third-party Portal authentication application and connected it to iMaster NCE-Campus to perform Portal authentication for Wi-Fi users. After connecting to Wi-Fi, a user will be redirected to the login page pushed by the authentication application when visiting any website for the first time.
Answer: B
Explanation:
Comprehensive and Detailed In-Depth Explanation:
In theHuawei iMaster NCE-Campussolution, when using athird-party Portal authentication application, the following process occurs:
After the Wi-Fi user connects to the network, any attempt toaccess a website for the first timetriggersHTTP redirection.
The user isredirected to the login pageprovided by the third-party authentication application.
This mechanism ensures that the userauthenticatesbefore accessing external resources.
The redirection behavior is consistent withcaptive portal functionality, which is standard for user authentication on Wi-Fi networks.
Therefore, the statement isTRUE.
Reference:
Huawei HCIE Datacom Official Certification Guide
Huawei iMaster NCE-Campus Authentication Guide
Captive Portal Authentication Principles
NEW QUESTION # 32
The following information is displayed during OSPF troubleshooting. Based on this information, which of the following is the cause of the failure in establishing an OSPF adjacency relationship?
< Huawei > display ospf error interface GigabitEthernet 0/0/0
OSPF Process 1 with Router ID 10.0.12.2
OSPF error statistics
Interface: GigabitEthernet0/0/0 (10.0.12.2)
General packet errors:
0 : Bad version 0 : Bad checksum
0 : Bad area id 0 : Bad authentication type
0 : Bad authentication key 0 : Unknown neighbor
0 : Bad net segment 0 : Extern option mismatch
0 : Router id confusion
HELLO packet errors:
2 : Netmask mismatch 0 : Hello timer mismatch
0 : Dead timer mismatch 0 : Invalid Source Address
Answer: C
Explanation:
According to the displayed OSPF error statistics from the Huawei device, the key HELLO packet error shown is:
yaml
CopyEdit
2 : Netmask mismatch
This indicates that the OSPF adjacency formation is failing due to a subnet mask mismatch between the two OSPF neighbors on the corresponding interface (GigabitEthernet 0/0/0). OSPF uses the subnet mask in Hello packets to ensure that neighbors are in the same network. If the masks do not match, OSPF will not form an adjacency.
From the Huawei Official HCIE-Datacom Study Guide (Version 3.0) - under the OSPF Troubleshooting Section:
" Netmask mismatch: If the subnet mask configured on the interfaces of OSPF neighbors does not match, a ' Netmask mismatch ' error occurs. OSPF requires neighbors to be on the same subnet to establish an adjacency. This is a common reason for failure in adjacency formation. " (Reference: Huawei HCIE-Datacom V3.0, OSPF Troubleshooting Chapter, Section 4.2 - OSPF Hello and Adjacency Establishment Issues) Thus, among the given options:
A). Area type inconsistency would result in an area ID mismatch error, not netmask.
B). Authentication mismatch would show a bad authentication key or type error.
D). Hello interval mismatches would trigger a Hello timer mismatch error.
Only C. The IP address masks of the interfaces are inconsistent directly matches the actual error observed:
Netmask mismatch.
NEW QUESTION # 33
When an NVE encapsulates a data frame into a VXLAN packet, information of which of the following protocols is encapsulated between the outer IP header and the VXLAN header?
Answer: C
Explanation:
Comprehensive and Detailed In-Depth Explanation:
In VXLAN encapsulation, the data frame is encapsulated as follows:
Original Ethernet Frame:The data packet to be encapsulated.
VXLAN Header:Contains the VXLAN Network Identifier (VNI) and other information.
UDP Header:VXLAN usesUDP (User Datagram Protocol)to transport the encapsulated data over an IP network.
Outer IP Header:Provides the source and destination IP addresses of the VTEPs.
Therefore, theUDP header(C) isencapsulated between the outer IP header and the VXLAN header.
Reference:
Huawei HCIE Datacom Official Certification Guide
Huawei VXLAN Configuration Guide
RFC 7348: Virtual eXtensible Local Area Network (VXLAN)
NEW QUESTION # 34
When deploying BGP/MPLS IPVPN, OSPF's VPN route tag is not present
The extended properties of MP-BGP are passed only locally, only locally, and only meaningful on routers that receive MP-BGP routes and generate OSPF LSAs.
Answer: B
NEW QUESTION # 35
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