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| Section | Weight | Objectives |
|---|---|---|
| Advanced Routing and Switching Technologies | 37% | - Network Quality and Optimization
|
| WAN Interconnection Network Planning and Deployment | 8% | - WAN Interconnection Technologies
|
| Bearer WAN Planning and Deployment | 15% | - High-level Technology Deployment
|
| Network Automation Technologies and Practice | 17% | - Automation Foundation
|
| Campus Network Planning and Deployment | 23% | - Campus Network Service Deployment
|
>> Huawei H12-891_V1.0 Reliable Exam Topics <<
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NEW QUESTION # 222
Refer to the following command output on the router R3. Which of the following statements are correct?
<R3> display interface Tunnel
Tunnel0/0/0 current state : UP
Line protocol current state : UP
Last line protocol up time : 15:21:26 UTC-08:00
Description: HUAWEI, AR Series, Tunnel0/0/0 Interface
Route Port, The Maximum Transmit Unit is 1500
Internet Address is 20.1.1.2/24
Encapsulation is TUNNEL, loopback not set
Tunnel source 10.0.3.3 (LoopBack0), destination 10.0.1.1
Tunnel protocol/transport GRE/IP, key disabled
keepalive disabled
Checksumming of packets disabled
Answer: A,C,D
Explanation:
From the output:
Tunnel destination IP address: Clearly shown as destination 10.0.1.1 ## Tunnel interface MTU: Shown as The Maximum Transmit Unit is 1500 ## Tunnel interface IP: Shown as Internet Address is 20.1.1.2/24 ## Tunnel source: Tunnel source 10.0.3.3 (LoopBack0) # Not 10.0.1.1 ## Therefore:
A- Correct
B- Correct
C- Correct
D- Incorrect (confuses destination as source)
Correct answers: A, B, C
NEW QUESTION # 223
The Huawei SD-WAN solution has three types of channels. Drag the channel names to their corresponding callouts.
Answer:
Explanation:
Explanation:
A white line with black lines AI-generated content may be incorrect.
In Huawei'sSD-WAN architecture, the following channels are defined:
Management Channel (Callout 1)
BetweeniMaster NCEandEdge devices.
Used for deviceregistration, configuration, and monitoring.
Encrypted with HTTPS.
Control Channel (Callout 2)
BetweenEdge devices and RR (Route Reflector).
Used forroute exchangeandcontrol signaling, typically overMPLS or Internet.
Data Channel (Callout 3)
BetweenEdge to Edge(e.g., HQ to branch).
Used for actualservice traffic transmission, carried overMPLS, Internet, or both.
Correct Mapping:
Management channel# Callout1(from iMaster NCE to Edge)
Control channel# Callout2(Edge to RR)
Data channel# Callout3(Edge to Edge, over MPLS/Internet)
NEW QUESTION # 224
In Huawei SD-WAN Solution, which of the following tunneling technologies is used to establish data channels?
Answer: C,D
Explanation:
Understanding Huawei SD-WAN Tunneling Technologies
Huawei SD-WAN uses secure tunneling to connect branches, data centers, and cloud services.
๐น Tunneling Technologies in SD-WAN:
โ
IPsec (Answer B) โ Provides secure encrypted tunnels over public or private networks.
โ
GRE over IPsec (Answer D) โ Encapsulates traffic inside GRE, then encrypts with IPsec, enabling support for multicast and non-IP traffic.
โ A. WLAN (Incorrect Choice) โ WLAN is a wireless technology, not a tunneling protocol.
โ C. MPLS (Incorrect Choice) โ MPLS is a core network transport technology but is not used to establish SD-WAN data channels directly.
Why are Answers B and D Correct?
โ
Huawei SD-WAN primarily uses IPsec for data encryption.
โ
GRE over IPsec is used when supporting multicast or dynamic routing protocols over tunnels.
โ
Reference: Huawei HCIE-Datacom Guide - SD-WAN Tunneling Mechanisms
NEW QUESTION # 225
Which of the following protocols is used in the Huawei SD-WAN Solution to report device performance data?
Answer: C
Explanation:
Comprehensive and Detailed In-Depth Explanation:
TheHuawei SD-WAN SolutionusesHTTP/2as the primary protocol toreport device performance datato the controller.
HTTP/2is chosen for itshigh efficiency, low latency, and enhanced data transfer speed.
It supportsbidirectional communicationbetween devices and the iMaster NCE-Campus controller.
While protocols likeNetFlowandSNMPare traditionally used for monitoring, Huawei SD-WAN specifically usesHTTP/2for real-time performance reporting and control due to its modern web-based architecture.
NEW QUESTION # 226
In the LDP session establishment process, the initiator sends an Initialization message for parameter negotiation. Which message will be sent by the responder if it does not accept negotiation parameters?
Answer: D
Explanation:
Comprehensive and Detailed In-Depth Explanation:
In the Label Distribution Protocol (LDP) session establishment process, theInitialization messageis sent by the initiator to propose parameters for the session. If the responder finds that the proposed parameters are not acceptable, it responds with anError Notification Message. This message indicates that the session could not be established due to incompatible or incorrect parameters.
TheError Notification Messagetypically includes details about why the session could not be established, such as parameter mismatch or unsupported features. If the parameters are acceptable, the responder would instead reply with aKeepalive Messageto maintain the session.
NEW QUESTION # 227
......
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