All four are valid reasons why IKE (Internet Key Exchange) negotiation might not be triggered:
A- Security policy mismatches canblock data flows, preventing IPsec from initiating.
B- If theroute to the peer is unreachable, no packets can reach the tunnel interface, and IKE will not start.
C- If the IPsec policy is notbound to the correct interface, no protection is triggered.
D- If the ACL doesnot match the actual traffic, the flow will bypass IPsec.
Reference from Huawei HCIP-Datacom-Core Technology Study Guide:
"Common causes of IKE negotiation failure include incorrect ACLs, misapplied policies, unreachable peers, and misconfigured security zones." (Chapter: VPN Technologies - Section: IPsec Troubleshooting)

Comprehensive and Detailed Step-by-Step Explanation:
1. Understanding IGMP (Internet Group Management Protocol):
IGMP is used in multicast networking to manage membership of devices in multicast groups.
Key parameters in the configuration provided:
Interface IP Address:192.168.1.1
IGMP Version:2
Query Interval (Configured):60 seconds
Maximum Query Response Time:10 seconds
Querier Address:192.168.1.1
2. Analysis of Each Statement:
Option A: The IP address of the interface is 192.168.1.1.
Correct (True Statement).
The configuration clearly shows that the IP address of the interface is 192.168.1.1.
Option B: The maximum response time to Query messages is 10s.
Correct (True Statement).
The configuration explicitly mentions: Value of maximum query response time for IGMP: 10 s.
Option C: The interval for sending Group-Specific Query messages is 60s.
Incorrect (False Statement).
The 60-second value refers to thequery interval, which is the time interval betweengeneral queriessent by the querier.
The interval forgroup-specific queriesis not specified in this configuration. It is determined dynamically based on the multicast environment and is usually shorter than the general query interval.
Option D: The IGMP version is IGMPv2.
Correct (True Statement).
The configuration specifies: Current IGMP version is 2.
3. Why Option C is False:
The 60-second value is forgeneral query interval, not group-specific query interval.
The statement misinterprets the configuration, making itfalse.
4. Summary:
answer:C (The interval for sending Group-Specific Query messages is 60s).
Reference:
Huawei HCIA-Datacom Study Guide, Chapter "IGMP Protocol Configuration." RFC 2236: IGMPv2 Specification.

The monitoring plane's primary role is environmental monitoring, ensuring the stability of the system.
Functions like voltage monitoring, temperature tracking, fan speed control, and power management are standard. These are independent of the forwarding or control planes and critical for maintaining device health in network operations .

In Layer 3 roaming scenarios, STAs (stations) remain on different subnets before and after roaming. To ensure that user traffic reaches the original subnet, it must be tunneled back over a CAPWAP tunnel. This technique prevents disruptions in communication and enables seamless roaming. Huawei's Layer 3 roaming design guidelines emphasize the use of CAPWAP tunnels for user traffic forwarding .

The native AC (Access Controller) function in Huawei's agile switches enables wired and wireless convergence. This integration allows the agile switch to act as both a wired network switch and a wireless controller, managing all traffic centrally. This architecture simplifies network management and improves efficiency, making the statement true .