Free H19-401_V2.0 Exam Braindumps
HCSP-Presales-Campus Network Planning and Design V2.0 Questions 16–20 (page: 5)

Updated On: 2-Sep-2026

Hybrid cables do not support PoE++ power supply.

  1. True
  2. False

Answer(s): B

Explanation:

This statement is False. Huawei’s Hybrid Optical-Electrical Cables (Photoelectric cables) are specifically designed to overcome the 100-meter distance limitation of traditional Ethernet. They combine optical fibers for high-speed data (10G/25G/100G) and copper wires for power. These cables are a core part of the "Simplified Architecture" and do support PoE++ (up to 90W), allowing high-power Wi-Fi 7 APs to be powered over distances of up to 300–500 meters from a central switch.



What is the single-link failover time supported by Huawei's M-LAG solution?

  1. < 50 ms
  2. < 400 ms
  3. < 2s
  4. < 1s

Answer(s): A

Explanation:

M-LAG (Multichassis Link Aggregation Group) is a key reliability technology in the Huawei Xinghe Intelligent Campus architecture. It provides device-level redundancy by virtualizing two switches into a single logical entity. One of the primary performance requirements for M-LAG in high-availability designs is ensuring millisecond-level failover. In the event of a single link failure (e.g., an uplink from an access switch to one of the M-LAG core switches), the traffic is rerouted through the peer-link or the remaining active member of the Eth-Trunk in less than 50 ms, ensuring "hitless" service for sensitive applications like voice or industrial control.



Which of the following are slicing technology implementation solutions?

  1. FlexE
  2. Slice ID
  3. Flex-channel
  4. Channelized sub-interface

Answer(s): A,C,D

Explanation:

In the Xinghe Intelligent Campus solution, "Network Slicing" is used to provide hard or soft isolation for different services (e.g., separating video conferencing from guest Wi-Fi). The three primary implementation solutions (resource isolation methods) defined in the HCSP V2.0 curriculum are:
FlexE (Flexible Ethernet) (A): Provides physical-layer hard isolation by dividing the MAC/PHY interface into slots.
Flex-channel (Flexible Channel) (C): A Huawei-patented technology that provides dedicated bandwidth with nearly zero interference.
Channelized sub-interface (D): Uses sub-interfaces with reserved bandwidth to provide logical isolation.
Slice ID (B) is an identifier carried in the packet header (such as the IPv6/SRv6 extension header) used to map traffic to a specific slice; it is a label/identifier, not the underlying resource isolation technology implementation itself.



iStack virtualizes multiple devices into one device, greatly simplifying network configuration and device management.

  1. True
  2. False

Answer(s): A

Explanation:

iStack (Intelligent Stack) is a horizontal virtualization technology used primarily at the access and aggregation layers of the campus network. It allows multiple physical switches to be connected via stack cables and managed as a single logical device with a unified management IP and configuration file. This eliminates the need for complex protocols like STP (Spanning Tree Protocol) to prevent loops, as the links between the stack and the upstream devices are treated as a single inter-device Eth-Trunk.



Free mobility grants users consistent network access rights and enforces corresponding policies, regardless of the users' locations and IP addresses.

  1. True
  2. False

Answer(s): A

Explanation:

Free Mobility is a core component of the Huawei Xinghe Intelligent Campus solution. Traditionally, network policies (ACLs) were tied to IP addresses, which change as users move. Free Mobility decouples policies from IP addresses by using Security Groups (also known as "Group-based Policy").
When a user authenticates via iMaster NCE-Campus, they are assigned to a specific group. The network then enforces permissions based on the "Source Group" and "Destination Group," ensuring that a teacher, for example, has the same access rights whether they are in the office, a classroom, or the library.



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