Free Huawei H12-841_V1.5 Practice Exam with Questions & Answers | Set: 3

HuaweiCloudEngine S series switchesare designed for modern campus access scenarios that require flexible device deployment, especially for wireless APs, IP phones, cameras, and IoT terminals. According to HCIP Datacom Campus Network documentation, these switches supportPoE long-distance power supply, allowing power and data to be transmitted overCat5e Ethernet cables for distances of up to 200 metersunder specific conditions.

Traditionally, standard Ethernet transmission and PoE delivery are limited to 100 meters. However, Huawei CloudEngine S series switches introducePoE Long Distance (PoE LD) mode, which extends the maximum transmission distance while maintaining stable power delivery and communication. This capability is particularly valuable in campus environments such as schools, hospitals, warehouses, and outdoor corridors, where powered devices may be located far from access switches.

When PoE long-distance mode is enabled, the switch optimizes signal transmission and power output to ensure reliable operation over extended cabling. This reduces the need for additional intermediate switches or power supplies, simplifying network architecture and lowering deployment and maintenance costs.

It is important to note that this feature applies to supported CloudEngine S models and compliant powered devices, and appropriate cable quality such as Cat5e is required. Within these design constraints, CloudEngine S series switches are fully capable of delivering PoE over distances up to 200 meters.

Therefore, the statement is correct, and the answer isTRUE.

Huawei CloudCampus is an intelligent campus network solution designed to simplify deployment, improve O&M efficiency, and enhance user experience through cloud-based and automated technologies. Its advantages mainly focus onnetwork automation, unified management of campus network devices, and intelligent services, rather than full IT infrastructure management.

Option A is a core advantage of CloudCampus. Through cloud-based controllers and automation technologies, CloudCampus supportsautomatic deployment of physical networks, reducing manual configuration and shortening service rollout time.

Option B is also an important advantage. CloudCampus supportsplug-and-play of devices, where network devices can automatically go online, download configurations, and complete provisioning after being powered on and connected, significantly reducing on-site workload.

Option D is another key feature. Cloud Campus supportsfree mobility, allowing users to roam across different access points or areas while maintaining consistent network access policies and service experience, which is especially important in modern wireless campus environments.

Option C isnot an advantageof the Huawei Cloud Campus solution. Cloud Campus focuses on unified management ofcampus network devicessuch as switches, routers, and wireless devices. It does not provide unified management forstorage servers, which fall outside the scope of campus network management and belong to data center or IT infrastructure management solutions.

Therefore, unified management of Huawei switches, routers, and storage servers is not an advantage of the Cloud Campus solution.

Comprehensive and Detailed 200 to 250 words of Explanation From HCIP Datacom Campus Network documents knowledge without any URL or Links:

To prevent users from accessing the network using statically configured IP addresses, Huawei campus networks rely on a combination ofDHCP SnoopingandIP Source Guard (IPSG). DHCP Snooping works by monitoring DHCP message exchanges and building atrusted binding tablethat records legitimate IP–MAC–VLAN–interface mappings learned dynamically from a legal DHCP server. This binding table becomes the foundation for several Layer 2 security mechanisms.

IP Source Guard uses the DHCP Snooping binding table to strictly control traffic entering an interface. When IPSG is enabled, the switch permits only packets whose source IP address and MAC address match an entry in the DHCP Snooping binding table. If a user manually configures a static IP address, no valid DHCP binding exists for that host, so IPSG drops the traffic and denies network access. This directly prevents statically configured IP addresses from being used to access the network.

Dynamic ARP Inspection (DAI) focuses on preventing ARP spoofing and man-in-the-middle attacks, not static IP misuse. Port Security limits MAC addresses per interface but does not verify IP address legitimacy. Therefore, neither DAI nor Port Security alone can prevent users from assigning static IP addresses.

According to HCIP Datacom Campus Network security design principles,only the combination of DHCP Snooping and IPSGeffectively enforces IP address legitimacy and blocks statically configured IP access, making optionCthe correct answer.

Comprehensive and Detailed 200 to 250 words of Explanation From HCIP Datacom Campus Network documents knowledge without any URL or Links:

In a CloudCampus VXLAN fabric, theglobal resource poolcentrally manages identifiers such as VLANs, VNIs, and bridge domains to ensure consistent allocation across the fabric.

StatementAis correct because abridge domain (BD)is the VXLAN equivalent of a VLAN and represents a Layer 2 broadcast domain used for packet forwarding within a VXLAN network.

StatementCis also correct. AVXLAN Network Identifier (VNI)uniquely identifies a VXLAN segment and is a core VXLAN forwarding identifier.

StatementDis correct because theservice VLAN poolis used to allocate VLANs for multiple purposes, including external gateway interconnections, network service resource interconnections, policy association management, and VN access VLANs.

StatementBis false. VLANs used forunderlay device interconnectionsarenot allocated from the VLAN resource poolmanaged by the VXLAN fabric. Underlay VLANs belong to the traditional IP underlay network and are typically planned and configured independently. The VLAN resource pool is intended for overlay-related services and fabric-managed VLAN usage only.

Therefore, the incorrect statement isB.

In Huawei campus network solutions,free mobilityis a user-centric access control mechanism designed to decouple network policies from physical locations and traditional network identifiers. According to HCIP Datacom Campus Network documentation, free mobility doesnotrely on VLAN IDs or IP addresses as the basis for policy management and permission control. Instead, it is implemented based onuser identity, such as user accounts, roles, user groups, or device identities.

Traditional networks often bind security policies to VLANs or IP subnets, which means users receive different permissions when they move to different access points or switch ports. This approach lacks flexibility and increases configuration complexity. Free mobility solves this problem by using centralized authentication and authorization mechanisms, such as 802.1X or MAC authentication combined with AAA, to dynamically assign policies after user authentication.

Once a user is authenticated, the network enforces access permissions based on predefined user roles or groups, regardless of where the user connects to the network. Even if the user’s IP address or VLAN changes due to roaming, the same security policy is consistently applied. This ensures seamless access experience, simplifies network management, and enhances security control.

Because free mobility isidentity-based rather than VLAN- or IP-based, the statement claiming that it implements policy management and permission control based on users' VLAN IDs and IP addresses is incorrect. Therefore, the correct answer isFALSE.

Huawei’s free mobility solution is designed to provide consistent user access control and policy enforcement across the campus network, regardless of user location. According to HCIP Datacom Campus Network documentation, the solution is built around severalclearly defined core roles, each with specific responsibilities.

Theauthentication deviceis a core role. It performs user authentication using methods such as 802.1X, MAC authentication, or portal authentication, and associates user identity information with IP addresses or security groups.

Thepolicy enforcement deviceis also a core role. It enforces security and access control policies based on IP-security group information, ensuring that traffic complies with defined policies wherever the user is connected.

iMaster NCE-Campusis another core component of the free mobility solution. It acts as the centralized management and control platform, responsible for policy definition, IP-security group management, and coordination of information distribution between authentication points and policy enforcement points.

Thepolicy control device, however, isnot a core roleexplicitly defined in Huawei’s free mobility architecture. Policy control functions are integrated into iMaster NCE-Campus rather than implemented as a separate standalone device role. Therefore, “policy control device” is not recognized as a core role in the free mobility solution.

As a result, option B is the correct answer, while the other options represent essential components of Huawei’s free mobility solution as defined in HCIP Datacom Campus Network materials.

In Huawei campus network access control solutions, different authentication methods are selected based onterminal capabilities, user mobility requirements, and service scenarios. According to HCIP Datacom Campus Network documentation,Portal authenticationandMAC address authenticationare designed for distinct use cases, and the statement correctly describes their recommended application scenarios.

Portal authenticationis well suited for environments withhigh user mobility and a wide variety of terminal types, such as shopping malls, supermarkets, airports, and exhibition centers. In these scenarios, users frequently connect and disconnect from the network using mobile phones, tablets, and laptops. Portal authentication provides a flexible and user-friendly access method, typically through a web page where users enter credentials, accept terms, or obtain temporary access. It does not require pre-installed client software and supports fast onboarding of diverse devices, making it ideal for public or semi-public access networks.

On the other hand,MAC address authenticationis recommended fordumb terminalsthat lack interactive user interfaces or browser capabilities. Devices such as printers, fax machines, IP phones, and some IoT terminals cannot complete Portal authentication. MAC authentication allows the network to authenticate these devices based on their MAC addresses, enabling automatic and seamless access once the MAC address is registered in the authentication system.

Using the appropriate authentication method improves user experience, simplifies network management, and enhances security. Therefore, the statement accurately reflects Huawei’s recommended authentication practices and isTRUE.

Comprehensive and Detailed 200 to 250 words of Explanation From HCIP Datacom Campus Network documents knowledge without any URL or Links:

Huawei campus switches support multiple flexible VLAN assignment methods to meet diverse access control and service deployment requirements. The most basic method isinterface-based VLAN assignment, where a physical or logical port is statically assigned to a specific VLAN. This method is simple and widely used in traditional access layer designs.

Huawei switches also supportMAC address–based VLAN assignment, allowing devices to be dynamically placed into VLANs based on their MAC addresses. This is useful in scenarios where users frequently move between access ports but require consistent VLAN membership.

Protocol-based VLAN assignmentenables traffic to be classified into VLANs based on upper-layer protocol types, which can be useful in special service separation scenarios. Additionally,IP subnet–based VLAN assignmentallows switches to assign VLANs according to the source IP address of packets, enabling logical grouping of users based on network layer addressing rather than physical location.

These VLAN assignment mechanisms enhance network flexibility, simplify user mobility, and improve access-layer service management. According to HCIP Datacom Campus Network documentation, Huawei switches indeed support VLAN assignment based on interface, MAC address, protocol, and IP address. Therefore, the statement is TRUE, and option A is correct.

In BGP EVPN-based VXLAN networks, route advertisement follows clearly defined standards regarding how endpoint and tunnel information is carried. According to HCIP Datacom Campus Network documentation,BGP EVPN does not use an EVPN Router MAC Extended Community to advertise the Router MAC of a VTEP. This statement is therefore incorrect.

In EVPN, different route types serve specific purposes. For example,EVPN Route Type 2 (MAC/IP Advertisement routes)are used to advertise MAC addresses (and optionally IP addresses) of endpoints. These routes associate endpoint information with a VTEP by using theBGP next-hop attribute, which contains the VTEP IP address. Similarly,EVPN Route Type 3 (Inclusive Multicast Ethernet Tag routes)also relies on the BGP next hop to identify the VTEP for VXLAN tunnel establishment and BUM traffic forwarding.

The Router MAC of a VTEP is alocal forwarding attribute, primarily used during VXLAN encapsulation and decapsulation on the device itself. It is not distributed through EVPN extended communities. While EVPN does define several extended communities for control and policy purposes, there is no standard or HCIP-defined “EVPN Router MAC Extended Community” used to carry the Router MAC field of a VTEP during route advertisement.

Therefore, based on HCIP Datacom Campus Network VXLAN EVPN principles, the statement is false.

WLAN planning and design aim to minimize co-channel and adjacent-channel interference while maximizing spectrum utilization and user experience. According to HCIP Datacom Campus Network WLAN design principles, proper channel planning is a core task, especially in environments with high user density.

On the2.4 GHz frequency band, only three non-overlapping channels—1, 6, and 11—are traditionally recommended. These channels do not overlap in frequency, which helps reduce interference between adjacent APs. Inhigh-density scenarios, to further improve spectrum utilization,channels 1, 5, 9, and 13can be used. This approach shortens the channel spacing but is acceptable when transmit power is well controlled and AP placement is carefully planned, enabling higher AP density while keeping interference manageable.

On the5 GHz frequency band, there are more available channels and less interference compared to 2.4 GHz. HCIP Datacom documentation recommendsstaggering high-frequency and low-frequency channels between adjacent APs. This staggered channel allocation reduces the likelihood of co-channel interference and improves overall throughput and roaming performance, especially in large or high-density campus deployments.

These channel planning strategies are standard WLAN design best practices supported by Huawei and are widely applied in enterprise campus networks. Therefore, the statement accurately reflects recommended WLAN planning principles and isTRUE.