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| Section | Objectives |
|---|---|
| WAN and VPN Technologies | - MPLS fundamentals
|
| Enterprise Network Architecture | - Network design principles
|
| Network Security and QoS | - QoS mechanisms
|
| Routing and Switching Technologies | - Switching technologies
|
| Network Automation and Programmability | - SDN and automation
|
| Data Center and Virtualization Technologies | - VXLAN and overlay networks
|
| IPv6 and Advanced IP Technologies | - IPv6 deployment
|
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NEW QUESTION # 275
As shown in the figure, three switches S1, SW, and SN3, where SWI is the root bridge, and link congestion occurs between SI and SW2, SWD cannot receive the configuration BPDU sent by the root bridge, which spanning tree protection mechanism does the administrator need to configure to prevent the problem caused by link congestion?( Single choice questions).
Answer: A
NEW QUESTION # 276
Link state information is isolated by default between different IS-IS processes on the same router.
Answer: A
NEW QUESTION # 277
Which of the following channels are involved in the Huawei SD-WAN Solution?
Answer: A,B,C,D
Explanation:
Comprehensive and Detailed In-Depth Explanation:
TheHuawei SD-WAN Solutioninvolves four types of channels to ensure smooth and efficient network operation:
Management Channel (A):Used for managing and monitoring SD-WAN devices. It facilitates communication between theiMaster NCE-Campus controllerand SD-WAN devices.
Control Channel (B):Responsible for transmittingcontrol plane informationsuch as routing updates and protocol control messages.
Data Channel (C):Carries actualuser data trafficover the SD-WAN network.
Orchestration Channel (D):Used forservice orchestration, configuration delivery, and policy management.
All four channels work together to provide comprehensive network management, data transmission, and service orchestration in an SD-WAN environment.
Reference:
Huawei HCIE Datacom Official Certification Guide
Huawei SD-WAN Solution Documentation
NEW QUESTION # 278
As a network administrator, which of the following protocols can I use for network device configuration?
Answer: A,B
NEW QUESTION # 279
In addition to indicating priority, the DSCP value can also indicate the drop probability. Which of the following DSCP values is set with the highest drop probability?
Answer: C
Explanation:
Understanding DSCP & Assured Forwarding (AF) Classes
DSCP (Differentiated Services Code Point) is used for QoS (Quality of Service) classification in IP packet headers.
Assured Forwarding (AF) classes provide four traffic classes (AF1x, AF2x, AF3x, AF4x).
Each AF class has three drop precedence levels (Low = 1, Medium = 2, High = 3).
Analysis of Options:
AF43 (Answer A) → Class 4, High Drop (Highest priority, highest drop probability) ✅ AF10 (Answer B) → Class 1, Low Drop (Lowest priority, lowest drop probability) ❌ AF12 (Answer C) → Class 1, Medium Drop Probability ❌ AF11 (Answer D) → Class 1, Low Drop Probability ❌ Why AF43?
Highest priority traffic within AF Class 4.
Highest drop probability (x3) means packets are dropped first under congestion.
Used for premium but non-essential services (e.g., bulk data transfer, backups).
✅ Reference: Huawei HCIE-Datacom Guide - QoS & DSCP Marking
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NEW QUESTION # 280
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