Free Practice Questions for Huawei H12-841_V1.5 Exam

Encapsulating Security Payload (ESP) is one of the core protocols of the IPsec framework and is widely used in Huawei campus and SD-WAN network solutions to provide secure data transmission. ESP operates directly over IP and is identified by a uniqueIP protocol number, which allows network devices to recognize and process ESP packets correctly.

According to HCIP Datacom Campus Network documentation and standard IP protocol definitions,ESP uses protocol number 50. ESP provides essential security services such as data confidentiality through encryption, data integrity verification, authentication, and anti-replay protection. It can operate in bothtransport modeandtunnel mode, making it suitable for scenarios such as site-to-site VPNs and remote access VPNs.

The other options listed are incorrect.Protocol number 47is used by GRE (Generic Routing Encapsulation), which is a tunneling protocol and does not provide encryption.Protocol number 51is assigned to AH (Authentication Header), another IPsec protocol that provides integrity and authentication but does not support encryption.Protocol number 102is not associated with ESP or commonly used IPsec-related protocols.

Correct identification of ESP traffic using protocol number 50 is critical for firewall configuration, security policy enforcement, and proper forwarding of encrypted traffic in campus and WAN environments. Therefore, the correct answer is50, which corresponds to optionB.

iMaster NCE-Campus adopts a flexiblemulti-plane networking architectureto meet different deployment scale and reliability requirements. According to HCIP Datacom Campus Network documentation, iMaster NCE-Campus supports bothsingle-plane networkingandmulti-plane networking, and the selection depends on the system deployment mode.

In asingle-node system deployment, all functional components of iMaster NCE-Campus run on a single node. In this scenario,single-plane networking is optionaland can be used to simplify network planning and reduce deployment complexity. Management traffic, service traffic, and internal communication share the same network plane, which is sufficient for small-scale or test environments where high availability and strict isolation are not mandatory.

However, inmulti-node or cluster deployments, iMaster NCE-Campus requiresmulti-plane networking. Different network planes—such as management plane, service plane, and internal communication plane—are deployed separately to ensure high availability, scalability, performance isolation, and security. Single-plane networking isnot supportedin these deployments because it cannot meet the reliability and performance requirements of clustered systems.

This design ensures that large-scale campus networks benefit from fault isolation and load separation, while smaller deployments can use a simplified architecture. Therefore, the statement that single-plane networking is optional only in single-node system deployment is consistent with HCIP Datacom Campus Network design principles.

Hence, the correct answer isTRUE.

The displayed routes are EVPN routes shown in the formatNetwork(EthTagId/IpAddrLen/OriginalIp)with a /32 “OriginalIp” value (for example,0:32:1.1.1.0). In Huawei VXLAN BGP EVPN as described in HCIP Datacom Campus Network materials, this format corresponds toEVPN Route Type 3 (Inclusive Multicast Ethernet Tag Route). Type 3 routes are used by VTEPs to advertise participation information for a VXLAN broadcast domain (BD) and to provide the remote endpoint information needed for BUM (broadcast, unknown unicast, multicast) traffic handling.

Type 3 routes effectively carry theremote VTEP address information(the VTEP IP that serves as the tunnel destination in the underlay). Once the underlay Layer 3 network can reach that VTEP IP (for example, via IGP/BGP underlay routes), the VXLAN overlay can build forwarding toward the peer VTEP, so statementAis true and statementDis also true.

When ingress replication is used for BUM forwarding, the local VTEP needs a replication list of remote VTEPs in the BD. Receiving Type 3 routes provides the membership information required to form this list, making statementBtrue.

StatementCis false becauseType 2routes are MAC/IP Advertisement routes that include MAC information (and optionally a host /32 IP). The shown output contains no MAC fields, so it is not Type 2.

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

DHCP snooping works by distinguishing trusted and untrusted interfaces and controlling DHCP message forwarding behavior. After DHCP snooping is enabled, interfaces connected tolegal DHCP servers must be explicitly configured as trusted interfaces, otherwise DHCP server messages will be blocked. Therefore, statementB is correct.

On untrusted interfaces, the switchdrops DHCP server–type messages, such as DHCP Offer and DHCP ACK, to prevent rogue DHCP servers from assigning incorrect IP addresses. This validatesstatement C as correct.

Statement A is incorrect because DHCP snooping records client binding information mainly fromDHCP ACK messages, not from DHCP Offer messages. The ACK confirms the final IP assignment and lease parameters, making it the authoritative source for the binding table.

Statement D is also incorrect. When the interface connected to a DHCP client goes down, the corresponding DHCP snooping entry is immediately removed, rather than waiting for the lease to expire. This ensures real-time accuracy of the binding table.

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

Huawei iMaster NCE-Campus supports multiplelicense business modelsto meet different customer deployment and commercial requirements.

TheGlobal perpetual license (N1 mode)is a traditional licensing model where licenses are purchased once and permanently authorized. It is commonly used in on-premises controller deployments and is therefore a supported model, makingoption A correct.

TheTenant Subscription license (SaaS mode)is designed for cloud-based deployments, especially in MSP or enterprise scenarios using Huawei Cloud services. In this model, tenants subscribe to services on a periodic basis, aligning with the SaaS delivery approach. This is a valid and supported licensing model, makingoption B correct.

TheGlobal perpetual license (a-la-carte mode)allows customers to flexibly purchase specific functional modules according to their needs rather than buying a bundled license. This model is also supported by iMaster NCE-Campus and is widely used for customized deployments, makingoption C correct.

TheGlobal subscription license (IaaS mode)is not a defined licensing business model for iMaster NCE-Campus. IaaS refers to infrastructure-level cloud services rather than application-level controller licensing. Therefore,option D is incorrect.

Hence, the correct answers are A, B, and C.

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

In VXLAN-based networks, inter-subnet communication and external network access requireLayer 3 forwarding capabilities. ALayer 3 VXLAN gatewayperforms routing between different VXLAN segments (VNIs) and enables traffic to exit the VXLAN overlay toward traditional non-VXLAN networks.

The NVE interface is responsible only for VXLAN encapsulation and decapsulation and does not perform routing. VLANIF interfaces are used in traditional VLAN environments and do not provide VXLAN interworking. A Layer 2 VXLAN gateway supports bridging only and cannot route between subnets.

Therefore, the Layer 3 VXLAN gateway is the correct solution for inter-subnet communication and external access.

VXLAN uses theVXLAN Network Identifier (VNI)to identify and isolate virtual Layer 2 or Layer 3 networks in an overlay environment. The VNI field is24 bits long, which allows a theoretical maximum of2²⁴ (approximately 16 million) VNIs. This is a significant improvement over traditional VLAN technology, which supports only 4094 VLAN IDs, and is one of the main reasons VXLAN is adopted in large-scale campus and data center networks.

It is correct thata tenant can be mapped to one or more VNIs. For example, a tenant may use multiple VNIs to represent different broadcast domains or service segments, such as separate VNIs for different subnets or application tiers. However, the statement becomes incorrect when it claims that VXLAN supports a maximum of12 million tenants.

VXLAN does not directly define a fixed maximum number of tenants. VNIs represent virtual networks, not tenants themselves. The actual number of tenants supported depends on how VNIs are allocated and how the network design maps tenants to VNIs. In theory, the upper limit of VNIs is close to 16 million, not 12 million, and the number of tenants is typically much lower and design-dependent.

Therefore, while the description of VNIs being 24 bits long is correct, the conclusion about supporting a maximum of 12 million tenants is incorrect, making the overall statement false.

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.

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

Super VLAN is a Huawei campus network technology designed to solve broadcast domain and user isolation issues in large Layer 2 networks. It allows multiplesub-VLANsto be associated with a singleSuper VLAN, where the Super VLAN provides Layer 3 gateway services, and sub-VLANs remain Layer 2 isolated from each other. Users within different sub-VLANs cannot communicate directly at Layer 2, which effectively isolates users even though they share the same logical gateway.

This architecture significantly enhances user communication security by preventing direct Layer 2 attacks such as ARP spoofing or broadcast storms between users. In addition, broadcast packets generated within one sub-VLAN are confined to that sub-VLAN and do not propagate to others, preventing invalid or excessive broadcast traffic from impacting overall service quality.

Port isolation only isolates ports but does not provide centralized Layer 3 gateway management. IPSG focuses on IP address legitimacy enforcement rather than user isolation. Ethernet port security restricts MAC address access but does not control broadcast propagation or inter-user isolation across VLANs.

According to HCIP Datacom Campus Network design guidelines, Super VLAN is the correct technology for isolating users in the same VLAN scope while reducing broadcast impact and improving security, making option A correct.

In the Huawei CloudCampus Solution,device registrationis a key step that allows network devices such as switches, routers, and APs to establish a trusted management relationship withiMaster NCE-Campus. When a device is powered on and configured for cloud or controller-based management, it sends a registration request to the controller using a predefined service port.

According to HCIP Datacom Campus Network documentation,port 18008is used as thedestination portfor device registration requests sent to iMaster NCE-Campus. This port is specifically reserved for device onboarding and registration services, ensuring secure and standardized communication during the initial connection phase. Once the registration is successful, the controller can authenticate the device, assign it to a site, and push management and service configurations.

The other options are not correct in this context.Port 53is used for DNS services and has no role in controller registration.Port 179is used by BGP for routing protocol communication and is unrelated to device management.Port 10020is commonly associated with other management or telemetry functions but is not used for device registration in CloudCampus solutions.

Correctly configuring network connectivity and firewall rules to allow traffic to destination port18008is essential for successful zero-touch provisioning and automatic onboarding of devices. Therefore, the correct destination port number for device registration requests to iMaster NCE-Campus is18008, making optionDthe correct answer.