In the IS-IS protocol, TLV 129 (IPv4 interface address) is used to describe the IP address of an interface.
Each TLV type carries specific information, and TLV 129 specifically relates to interface IP addresses .

Comprehensive and Detailed Step-by-Step Explanation:
* Switch Stack Overview:
* In a switch stack, roles are assigned as master, standby, and slave.
* The master handles configuration and control, while the standby serves as the backup master.
* Behavior During Master Restart:
* D: If the master switch restarts, the standby switch immediately takes over as the new master.
* B: After the original master switch restarts, it becomes the master again (default behavior).
* Incorrect Options:
* A: The slave switch is not promoted to standby before the master switch restart completes.
* C: The original standby switch remains the master after the restart.
References:
* HCIA-Datacom Study Guide, Chapter: Switch Stack Management
* Huawei Switch Stack Role Transition Rules

Comprehensive and Detailed Step-by-Step Explanation:
Analysis of the OSPF Neighbor State:
Router ID 10.0.5.5:
On interface 10.0.235.2 (GigabitEthernet0/0/1), the neighbor state is Full, indicating that adjacency is established.
The Designated Router (DR) is 10.0.235.5, which is the same as the neighbor's address.
Router ID 10.0.4.4:
On interface 10.0.24.2 (Serial1/0/1), the neighbor state is also Full, meaning adjacency is established.
The DR/BDR election status shows None, indicating that the interface is on a point-to-point link where DR
/BDR election does not apply.
Validation of Each Option:
Option A: Correct. The DR IP address is explicitly shown as 10.0.235.5.
Option B: Correct. The neighbor state for both 10.0.5.5 and 10.0.4.4 is Full, confirming adjacency is established.
Option C: Incorrect. DR/BDR elections are irrelevant on point-to-point links like Serial1/0/1.
Option D: Correct. The Router IDs of R2's neighbors are explicitly listed as 10.0.5.5 and 10.0.4.4.
References:
HCIA-Datacom Study Guide, Chapter: OSPF Neighbor Relationships
Huawei OSPF Neighbor and Adjacency Details

Comprehensive and Detailed Step-by-Step Explanation:
iMaster NCE-Campus Overview:
iMaster NCE-Campus is Huawei's network management platform for managing and controlling campus networks.
It supports user authentication, including STA (Station) authentication, in WLAN environments.
Authentication Modes Supported:
iMaster NCE-Campus integrates with AAA (RADIUS) servers to perform authentication for wireless clients.
Correct Statement:
The platform can function as an authentication server for WLAN STAs.
References:
HCIA-Datacom Study Guide, Chapter: WLAN Management with iMaster NCE-Campus Huawei iMaster NCE-Campus Product Overview

Comprehensive and Detailed In-Depth Explanation:
* When a packet is checked against an Access Control List (ACL), it is processed based on rule matches.
* "Unmatched" scenarios occur if:
* A. TRUE # The packet does not match any ACL rule.
* C. TRUE # No ACL is configured, so there are no rules to match.
* D. TRUE # An empty ACL exists, meaning no rules are defined.
* B is incorrect because if the packet matches a deny rule, it is "matched" and explicitly dropped, not "unmatched".
# Reference: Huawei HCIA-Datacom Study Guide, ACL Rule Matching and Processing Logic.