H12-891_V1.0 Dumps with Practice Exam Questions Answers

Comprehensive and Detailed In-Depth Explanation:

1. Free Mobility in Huawei Campus Networks:

Free mobility allows users to move freely within a campus network while retaining their access rights and security policies. It leverages iMaster NCE-Campus as the controller to simplify the deployment and management of user policies.

2. Role of the Administrator:

Administrators are responsible for defining high-level policies and security configurations. Specifically:

Define a Policy Control Matrix:

Administrators create a matrix that specifies how users from different security groups interact.

This matrix outlines access permissions and is a part of the policy planning phase.

Define Security Groups:

Administrators categorize users, devices, or endpoints into security groups based on their roles or functions.

These groups form the basis for applying uniform policies within the network.

3. Role of iMaster NCE-Campus (Controller):

The controller handles the automatic delivery of configured policies and security settings to network devices.

Deliver IP-Security Group Entries:

Once the administrator defines the policies and groups, iMaster NCE-Campus automatically distributes the IP-Security Group Binding entries to the relevant network devices.

This ensures consistent policy enforcement across the campus.

4. Why This Mapping Is Correct:

Administrators define the structure and policies, while the controller (iMaster NCE-Campus) handles the implementation and distribution.

This division of responsibilities optimizes the network management process, reducing human error and ensuring that policies are consistently applied.

On the 2.4 GHz band, only three non-overlapping channels exist: 1, 6, and 11.

In high-density WLAN scenarios, channels like 1, 5, 9, and 13 can be used with lower transmit power to reduce co-channel interference — though they slightly overlap, they can work in dense deployments when managed properly.

On the 5 GHz band, there are many non-overlapping channels. It’s recommended to stagger high and low channels among adjacent APs to avoid interference.

Correct answer: A. TRUE

Comprehensive and Detailed In-Depth Explanation:

In VXLAN encapsulation, the data frame is encapsulated as follows:

Original Ethernet Frame: The data packet to be encapsulated.

VXLAN Header: Contains the VXLAN Network Identifier (VNI) and other information.

UDP Header: VXLAN uses UDP (User Datagram Protocol) to transport the encapsulated data over an IP network.

Outer IP Header: Provides the source and destination IP addresses of the VTEPs.

Therefore, the UDP header (C) is encapsulated between the outer IP header and the VXLAN header.

Comprehensive and Detailed Explanation:

IP Source Guard (IPSG) is a Layer 3 security feature used to protect against IP address spoofing by filtering packets based on bound IP-MAC mappings.

Correct Statements:✔ IPSG is a Layer 3 filtering mechanism that checks if the source IP address of a packet matches the learned or configured bindings (Option B).✔ IPSG prevents unauthorized IP address changes by enforcing binding rules (Option C).✔ IPSG defends against IP spoofing attacks by dropping packets from unauthorized sources (Option D).

Incorrect Statement:❌ Option A is incorrect because IPSG does not send alarms to an NMS when an invalid packet is detected. Instead, it drops the packet.

Thus, the correct answer is A.

???? Reference: Huawei HCIE Datacom Security Guide - IP Source Guard (IPSG)

Comprehensive and Detailed In-Depth Explanation:

A. When planning paths based on bandwidth: Correct. The available bandwidth of each interface must be set in advance to allow path planning based on bandwidth requirements.

B. When planning paths based on delay: Correct. To plan paths considering delay, you need to deploy TWAMP (Two-Way Active Measurement Protocol) or iFIT (Intelligent Flow Information Telemetry) to measure the real-time delay on network links.

C. If the controller plans SR-MPLS Policy paths: Incorrect. The controller can plan primary, backup, and load-balanced paths, enabling traffic distribution across multiple paths.

D. Statically planned SR-MPLS Policy paths: Correct. You can manually configure load balancing for the primary path when planning the SR-MPLS Policy path statically.