Free Huawei H12-841_V1.5 Practice Exam with Questions & Answers | Set: 2

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

In Huawei campus access authentication designs, network access is divided intopre-authentication,isolation, andpost-authenticationdomains to control user access at different stages of authentication.

Thepre-authentication domainprovides users with only the most basic network services required to initiate authentication. These services typically includeDHCPandDNS. DHCP allows unauthenticated terminals to obtain IP addresses and basic network parameters, while DNS enables domain name resolution so that users can reach authentication portals or admission servers. Therefore,DHCP and DNS servers are essential components of the pre-authentication domain, making optionsC and D correct.

AnFTP serveris a general-purpose file transfer service and is not required for user authentication. Anantivirus serverbelongs to theisolation domain, where users are redirected if authentication fails or if their devices do not meet security posture requirements, such as outdated virus signatures. These servers provide remediation resources but are not part of the pre-authentication process.

According to HCIP Datacom Campus Network documentation, limiting the pre-authentication domain to only essential services reduces security risks while ensuring successful user onboarding.

Comprehensive and Detailed Explanation (200–250 words):

In an iMaster NCE-Campus policy control matrix, rows representsource security groupsand columns representdestination security groups. A green check mark indicates that communication is allowed, while a red cross indicates that communication is denied. This matrix enables fine-grained user access control in VXLAN-based virtualized campus networks.

From the figure, communication betweenGuest_Group and Research_Groupis explicitly denied in both directions, as indicated by red crosses. Therefore, statementsAandDare both correct. The matrix also shows a green check mark forSales_Group communicating with itself, meaning intra-group communication is permitted, makingstatement B correct.

Theunknowngroup represents users that are not classified into Guest_Group, Research_Group, or Sales_Group. In the matrix, the unknown group is not completely blocked from all resources by default; access behavior depends on explicit policy configuration. Since the figure does not indicate a universal deny policy for unknown users toward all destinations,statement C is incorrect.

According to HCIP Datacom Campus Network policy control design, security group–based access control allows administrators to precisely define which user groups can communicate, improving security and service isolation. Hence, the correct answers areA, B, and D.

In Huawei campus networks, user access authentication is implemented through a standardized AAA framework that supports flexible authentication, authorization, and accounting methods. Statements A, B, and D correctly describe the authentication configuration process defined in HCIP Datacom Campus Network documentation. Administrators must first identify user domains and corresponding AAA schemes to ensure users are authenticated using appropriate methods. This is a foundational step for implementing network access control.

Access profiles and authentication profiles work together to define how users are authenticated. An authentication profile specifies the authentication mode, such as 802.1X or MAC authentication, while the access profile defines access control behavior. Binding these profiles and applying them to interfaces or VAP profiles enables consistent enforcement of access policies across wired and wireless networks.

When external authentication servers such as RADIUS or HWTACACS are used, interconnection parameters—including server IP addresses, shared keys, and ports—must be configured within the AAA scheme. This ensures reliable communication between network devices and authentication servers.

Statement C is false becauseiMaster NCE-Campus does support interconnection with third-party RADIUS servers. This capability allows enterprises to integrate existing authentication systems with Huawei campus solutions, improving compatibility and deployment flexibility. Therefore, the incorrect statement is option C.

In a VXLAN BGP EVPN deployment, interconnection between Layer 2 and Layer 3 networks relies onIntegrated Routing and Bridging (IRB). According to HCIP Datacom Campus Network documentation, for a VPN instance to advertise its IP routes to the BGP EVPN control plane, the device must explicitly enable IRB route advertisement in the BGP view.

Theadvertise irbcommand is used to allow IP routes learned in a VPN instance to be advertised as EVPN Type 5 (IP Prefix) routes. These routes enable communication between different VNIs or between VXLAN segments and external Layer 3 networks. Without this command, the VPN instance routes remain local and are not distributed through the EVPN control plane, preventing proper Layer 3 connectivity across the VXLAN fabric.

The other options are incorrect in this context. Theadvertise vpnv4command is used in traditional MPLS VPN scenarios, not in BGP EVPN-based VXLAN networks. Theadvertise irbv6command is specific to IPv6 IRB scenarios and does not apply to IPv4 route advertisement unless explicitly required. Theadvertise l2vpn evpncommand is used to enable the EVPN address family itself but does not control the advertisement of IP routes from a VPN instance.

Therefore, to enable a VPN instance to advertise IP routes to the BGP EVPN address family in a VXLAN network, the correct command isadvertise irb.

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

In Huawei iMaster NCE-Campus and CloudCampus management systems, different log types are designed to record different categories of events to support auditing, troubleshooting, and security analysis. When anMSP administrator creates a tenant account, this action is considered amanagement operationperformed through the system’s management interface.

Such administrative actions are recorded in theOperation Log. Operation logs documentuser-initiated configuration and management activities, including tenant creation, modification, deletion, policy changes, and administrative actions performed by operators or administrators. These logs are essential for operation auditing and responsibility tracing in multi-tenant environments.

System logsmainly record internal system events, such as service startup, module status changes, or system exceptions, and do not track administrator operations.Security logsfocus on security-related events, such as login failures, abnormal access attempts, or permission violations, rather than routine administrative operations.Device channel logsrecord communication events between devices and controllers, such as device registration or channel status changes, and are unrelated to tenant management actions.

According to HCIP Datacom Campus Network and CloudCampus O&M documentation, tenant account creation performed by an MSP administrator is clearly categorized as anoperation behavior, and therefore it is recorded in theOperation Log.

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.

In HCIP Datacom Campus Network VXLAN architecture, VXLAN tunnels are classified based onhow the tunnel endpoints are created and maintained, which is referred to as the VXLAN tunnel creation mode. According to Huawei VXLAN design principles, there aretwo valid VXLAN tunnel types: static VXLAN tunnels and dynamic VXLAN tunnels.

Astatic VXLAN tunnelis manually configured by an administrator. In this mode, the source VTEP IP address, destination VTEP IP address, and related parameters are explicitly specified on devices. Static VXLAN tunnels are typically used in small-scale networks or test environments where the number of VTEPs is limited and network topology is simple. However, static configuration lacks scalability and flexibility, making it unsuitable for large campus fabrics.

Adynamic VXLAN tunnelis automatically created based on control-plane learning mechanisms, such asBGP EVPN. In this mode, VTEPs learn remote VTEP IP addresses dynamically through EVPN route advertisements (for example, Type 3 routes). When a remote VTEP becomes reachable at the underlay Layer 3 level, the VXLAN tunnel is automatically established without manual intervention. This mode is widely used in modern campus and data center networks due to its scalability and automation capabilities.

Options A and D are incorrect becausestatelessandstatefulare not official VXLAN tunnel creation classifications in Huawei’s VXLAN implementation. VXLAN itself is an encapsulation mechanism, and tunnel state is not categorized in this manner.

Therefore, the correct VXLAN tunnel types based on creation mode arestatic VXLAN tunnels and dynamic VXLAN tunnels.

1 →dh group1

2 →main

3 →esp

4 →tunnel

In the IKE proposal, the Diffie-Hellman group defines the key exchange strength used during IKE Phase 1 negotiation, which is whydh group1corresponds to position 1 under the IKE proposal configuration. Theexchange-mode mainsetting is part of IKEv1 Phase 1 and therefore correctly matches position 2 under the IKE peer configuration.

For the IPsec proposal, thetransformspecifies the protocol used to protect data traffic; since ESP is explicitly required,espcorrectly maps to position 3. Finally, theencapsulation-mode tunneldefines how packets are encapsulated in IPsec VPNs between gateways, makingtunnelthe correct match for position 4.

This mapping strictly follows HCIP Datacom Campus Network IPsec and IKE configuration logic and aligns with standard Huawei VRP command behavior.

In campus network design, theegressis a critical point that connects the internal campus network to external networks such as the Internet or WAN. According to HCIP Datacom Campus Network architecture guidelines, ensuringhigh reliability at the egressis essential, even for small- and medium-sized campus networks, because external connectivity directly affects business continuity.

Deployingmulti-carrier linksat the egress is a recommended design practice to enhance reliability. Multi-carrier links refer to connecting the campus network todifferent service providersor independent external links. If one carrier experiences a failure, congestion, or maintenance issue, traffic can be switched to the backup carrier, ensuring uninterrupted external access. This approach significantly reduces the risk of service disruption caused by single-link or single-carrier failures.

For small- and medium-sized campuses, full redundancy with complex architectures may not be cost-effective. Multi-carrier backup links provide acost-efficient and practical solutionthat balances reliability and investment. Technologies such as static route backup, dynamic routing protocols, or policy-based routing can be used to implement automatic failover at the egress.

HCIP Datacom documentation emphasizes that egress reliability is not only a concern for large networks. Even smaller campuses require stable Internet and WAN access for cloud services, remote access, and centralized management platforms. Therefore, deploying multi-carrier links as backup at the egress is a valid and recommended design strategy.

Hence, the statement isTRUE.

In this scenario, O&M personnel need toview packet exchange processesduring Wi-Fi access and precisely locate the root cause of the failure. According to HCIP Datacom Campus Network documentation, theProtocol Tracefunction of iMaster NCE-CampusInsight is specifically designed for this purpose.

Protocol trace allows administrators to analyzereal packet interaction processesbetween clients, APs, gateways, and servers during key access phases such as authentication, IP address assignment, and service establishment. By tracing protocols like DHCP, ARP, and authentication exchanges, O&M personnel can clearly identify where the access process fails.

In the given case, mobile terminals fail to obtain IP addresses due toDHCP address pool exhaustion. This problem can only be accurately identified by observing the DHCP request and response flow, such as repeated DHCP Discover messages without successful Offer messages. Protocol trace visualizes this interaction step by step, making it easy to confirm that the DHCP server cannot allocate new IP addresses.

Other options do not match the scenario.Simulation feedbackis used to simulate access behavior rather than analyze real traffic.Issue analysisfocuses on aggregated fault statistics and trend analysis, not detailed packet-level inspection.Client journeytracks the overall user access path and experience stages but does not provide deep protocol packet visibility.

Therefore, the function used by O&M personnel to view packet exchange processes and identify DHCP pool exhaustion isProtocol trace, making optionAthe correct answer.