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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Campus Network Planning and Deployment | 23% | - Campus Network Architecture Design
|
| Topic 2: Bearer WAN Planning and Deployment | 15% | - High-level Technology Deployment
|
| Topic 3: WAN Interconnection Network Planning and Deployment | 8% | - WAN Interconnection Technologies
|
| Topic 4: Network Automation Technologies and Practice | 17% | - Automation Foundation
|
| Topic 5: Advanced Routing and Switching Technologies | 37% | - Network Quality and Optimization
|
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NEW QUESTION # 197
In the evolution from IPv4 networks to IPv6, some transition technologies have emerged, which of the following are common types of transition technologies?
Answer: A,B,C,D
NEW QUESTION # 198
Exhibit:
A loop occurs because Spanning Tree Protocol (STP) is not enabled on the network. Which of the following symptoms may occur?
Answer: A,B,D
Explanation:
When Spanning Tree Protocol (STP) is not enabled on a network, loops can occur in Layer 2 Ethernet networks, leading to various network issues. STP is designed to prevent loops by blocking redundant paths, and its absence can cause broadcast storms, MAC address table instability, and resource exhaustion. Let's analyze each option in the context of Huawei HCIE Datacom documentation and network behavior:
A: A loop alarm is generated on the LAN switch.
This option is incorrect. Huawei switches, as per HCIE Datacom standards, do not automatically generate a specific "loop alarm" unless configured with loop detection features (e.g., Huawei's Loop Detection Protocol or similar mechanisms). Without STP or loop detection enabled, the switch may not explicitly generate an alarm for a loop; instead, it will exhibit symptoms like broadcast storms or flapping MAC entries. Therefore, this is not a direct symptom of an STP-less loop. Reference: Huawei HCIE Datacom V3.0 Training Materials, Section 4.2 - Spanning Tree Protocol and Loop Prevention.
B: CPU usage is too high.
This option is correct. When a loop occurs without STP, broadcast packets (and sometimes multicast or unknown unicast packets) circulate endlessly in the network. This leads to excessive processing by switches as they handle these packets, resulting in high CPU usage. Huawei switches, as described in HCIE Datacom documentation, can experience CPU overload due to continuous packet forwarding and processing in a looped environment. Reference: Huawei HCIE Datacom V3.0, Chapter 5 - Switch Performance and Loop Management.
C: MAC entries flap.
This option is correct. In a loop without STP, switches continuously receive frames from multiple ports, causing MAC address tables to update repeatedly as the same MAC address appears on different ports. This
"flapping" of MAC entries destabilizes the network and can lead to incorrect frame forwarding. Huawei HCIE Datacom emphasizes MAC address table stability as a critical aspect affected by loops, as outlined in Section
4.3 - Ethernet Switching and Loop Mitigation. Reference: Huawei HCIE Datacom V3.0, Section 4.3.
D: Host receives a large number of broadcast packets.
This option is correct. A loop without STP causes broadcast packets to circulate indefinitely, creating a broadcast storm. Hosts connected to the network will receive an overwhelming number of these packets, potentially leading to performance degradation or even network timeouts. This is a well-documented symptom in Huawei HCIE Datacom training, specifically in discussions about loop prevention mechanisms.
Reference: Huawei HCIE Datacom V3.0, Chapter 4 - Layer 2 Loop Prevention.
Thus, the correct symptoms of a loop occurring due to the absence of STP include high CPU usage, flapping MAC entries, and hosts receiving a large number of broadcast packets. Option A is incorrect as it requires specific loop detection configuration, which is not implied in the question.
NEW QUESTION # 199
Which of the following statements is incorrect about access control on small and midsize campus networks based on the Huawei CloudCampus solution?
Answer: D
Explanation:
Understanding Huawei CloudCampus Access Control
Huawei's CloudCampus solution provides centralized authentication and policy management via iMaster NCE-Campus.
🔹 Analysis of Each Option:
✅ A. iMaster NCE can function as an authentication server.
Correct: iMaster NCE includes AAA (Authentication, Authorization, and Accounting) capabilities, reducing dependency on external servers.
❌ B. Cloud APs support local Portal authentication.
Incorrect: Huawei Cloud APs do NOT support local Portal authentication.
Instead, Portal authentication is managed centrally by iMaster NCE, NOT by individual APs.
✅ C. iMaster NCE can function as a Portal relay device.
Correct: It can relay authentication requests to a RADIUS or AAA server.
✅ D. iMaster NCE can interconnect with a third-party RADIUS server.
Correct: It supports integration with external RADIUS authentication servers for enterprise authentication.
Real-World Application:
Used in Wi-Fi 6 enterprise deployments where centralized authentication, security, and policy enforcement are needed.
✅ Reference: Huawei HCIE-Datacom Guide - CloudCampus Authentication Architecture
NEW QUESTION # 200
What kind of scenario can use AS one path and one filter?
Answer: A,B,D
NEW QUESTION # 201
Network administrator A wants to use an IP prefix-list to match specific routes. Which of the following routes can be matched by the IP prefix-list shown in this figure?
ip ip-prefix TEST permit 10.0.0.0 24 less-equal 30
Answer: A,C
Explanation:
Understanding Prefix Lists
* IP Prefix-Lists are used for filtering BGP routes and controlling route advertisement & redistribution.
* The command ip ip-prefix TEST permit 10.0.0.0 24 less-equal 30 means:
* Matches prefix 10.0.0.0/24 exactly.
* Matches any subnet of 10.0.0.0/24 with a prefix length between 24 and 30.
Analysis of Routes:
* # 10.0.0.0/24 # Matches exactly.
* # 10.0.0.1/30 # Falls within 10.0.0.0/24 & length #30.
* # 10.0.1.0/24 # Not within 10.0.0.0/24 range.
* # 10.0.2.0/24 # Not within 10.0.0.0/24 range.
Real-World Use Case:
* BGP route filtering: Only allows 10.0.0.0/24 and its subnets (up to /30).
* Prevents unintended route propagation in large-scale networks.
# Reference: Huawei HCIE-Datacom Guide - BGP Prefix-Lists
Next Steps
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NEW QUESTION # 202
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