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| Section | Weight | Objectives |
|---|---|---|
| Bearer WAN Planning and Deployment | 15% | - High-level Technology Deployment
|
| Network Automation Technologies and Practice | 17% | - Automation Foundation
|
| WAN Interconnection Network Planning and Deployment | 8% | - WAN Interconnection Technologies
|
| Advanced Routing and Switching Technologies | 37% | - Advanced Switching Technologies
|
| Campus Network Planning and Deployment | 23% | - Campus Network Architecture Design
|
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NEW QUESTION # 250
Which of the following technologies can be used to measure performance based on actual service traffic in Huawei's CloudWAN solution?
Answer: A
Explanation:
Understanding Performance Measurement in Huawei CloudWAN
Huawei CloudWAN enables intelligent traffic management, real-time network monitoring, and automated operations.
# Traditional Performance Monitoring Methods
* TWAMP (Two-Way Active Measurement Protocol) # Measures latency and jitter by injecting test traffic.
* Telemetry # Provides real-time network visibility, but does not measure actual service traffic performance.
* BGP FlowSpec # Used for DDoS mitigation, not performance measurement.
# iFIT (In-situ Flow Information Telemetry)# iFIT is a next-generation performance monitoring technology that measures:
* Real service traffic performance (latency, jitter, packet loss) in real time.
* Packet forwarding behavior at each hop without injecting synthetic traffic.
* Path delay and service degradation detection.
Why is Answer D Correct?
# iFIT provides real-time network performance monitoring based on actual service traffic.# Unlike TWAMP, iFIT does not require probe packets, reducing overhead.
Real-World Application:
* 5G Transport Networks: Ensures low-latency paths for ultra-reliable services.
* CloudWAN Optimization: Detects network congestion without affecting user traffic.
# Reference: Huawei HCIE-Datacom Guide - iFIT and Intelligent Performance Monitoring
NEW QUESTION # 251
If there is a switch running RSTP, which interface on that switch sends the BPDU with the Proposal logo??
Answer: C
NEW QUESTION # 252
The channelized sub-interface and FlexE technologies both can be used to implement network slicing, but the application scenarios of the two technologies are slightly different. Which of the following statements about the two technologies are correct?
Answer: A,B,C
Explanation:
Network Slicing Using Channelized Sub-Interfaces and FlexE
Both channelized sub-interfaces and FlexE (Flexible Ethernet) are used for network slicing, but they have different application scenarios:
# A. Channelized sub-interface is recommended for interfaces with bandwidth < 50 Gbit/s.
* Channelized sub-interfaces split a physical interface into multiple logical sub-interfaces.
* Best for lower-bandwidth links (<50 Gbit/s).
# B. FlexE is recommended for 50GE and higher-rate interfaces.
* FlexE divides a high-bandwidth physical link (e.g., 100GE, 400GE) into multiple virtual slices.
* Used in high-speed backbone and data center networks.
# C. Only FlexE-based network slicing can be deployed across OTN devices.
* FlexE is compatible with Optical Transport Network (OTN) and can be used for long-haul slicing across OTN.
# D. Only channelized sub-interface-based network slicing can be deployed across MSTP devices.
* Incorrect! While MSTP supports channelized interfaces, FlexE is not restricted to MSTP deployment
.
Reference from Huawei HCIE-Datacom Documentation:
* Huawei FlexE Technology Whitepaper - Network Slicing in Transport Networks
* HCIE-Datacom Training Material - Channelized Sub-Interface and FlexE in Network Slicing
NEW QUESTION # 253
HTTP/2 is a UDP-based low-delay Internet transport layer protocol.
Answer: A
Explanation:
HTTP/2 is a TCP-based protocol, not UDP-based. It runs on top of TCP port 443 (usually via TLS). The protocol enhances performance using multiplexing, header compression, and stream prioritization, but it still relies on TCP, unlike newer protocols like HTTP/3, which uses UDP and QUIC.
Exact Extract - Huawei Application Networking Fundamentals:
"HTTP/2 continues to use TCP as its transport layer, introducing improvements like multiplexing over a single TCP connection. UDP-based HTTP/3 is a separate protocol built on QUIC." Reference:
Huawei HCIE-Datacom Application Services Guide
IETF RFC 7540 (HTTP/2 Standard)
NEW QUESTION # 254
The IS-IS Level-1 neighbor relationship is not established between R3 and R4. Referring to the following information, what is the possible cause?
Answer: D
Explanation:
From the IS-IS error output, the key error is:
Mismatched Area Addr(L1): 13
This clearly indicates that the area addresses are different, which prevents the Level-1 adjacency from forming.
Why is Option D Correct?
IS-IS Level-1 routers must have the same area ID to form an adjacency.
Since the log shows a mismatched area address, the adjacency fails at Level-1.
If R3 and R4 were Level-2 routers, they could form an adjacency even with different area IDs.
Why Are the Other Options Incorrect?
โ Option A: No authentication failure is reported.
โ Option B: No "Mismatched Level" errors appear, so their levels are compatible.
โ Option C: No "Bad Circuit Type" errors indicate mismatched circuit types.
Thus, the correct answer is D.
๐ Reference: Huawei HCIE Datacom - IS-IS Neighbor Troubleshooting
NEW QUESTION # 255
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