Free Huawei-certification H12-841_V1.5 Ultimate Study Guide (Updated 316 Questions)
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NEW QUESTION # 81
In MPLS VPN network troubleshooting, if "the VPN instance routing table on the PE device contains routes to the remote CE, but packets cannot be forwarded to the remote CE," which of the following troubleshooting steps should be performed first?
- A. Check if the MPLS LSP is established on the P device.
- B. Check if the firewall on the remote CE device is blocking data packets.
- C. Check if the BGP VPNv4 neighbor between PE devices is established normally.
- D. Check if the VPN instance interface on the PE device can reach the remote CE.
Answer: D
NEW QUESTION # 82
In a WAN BGP routing policy, which of the following BGP attributes can "control the route selection order within the local AS, with the highest priority route being selected first"?
- A. AS_PATH
- B. Next Hop
- C. MED
- D. Local Preference
Answer: D
NEW QUESTION # 83
(The Huawei CloudCampus Solution supports various rate limiting modes for wireless users in small- and medium-sized campus scenarios. Which of the following modes is suitable for refined traffic control of each user?)
- A. SSID-based rate limiting
- B. User-based rate limiting
- C. ACL-based rate limiting
- D. Radio-based rate limiting
Answer: B
Explanation:
In Huawei CloudCampus wireless solutions for small- and medium-sized campus networks,refined traffic controlmeans the ability to precisely limit and manage bandwidth consumption at theindividual user level.
Among the available rate limiting modes,user-based rate limitingis specifically designed to meet this requirement.
User-based rate limiting applies bandwidth control policiesper authenticated user, regardless of which SSID, AP, or radio the user is connected to. This allows administrators to ensure fair bandwidth allocation, prevent a single user from monopolizing wireless resources, and provide differentiated service levels for different user roles, such as employees, guests, or VIP users. This fine-grained control aligns with identity-based access and policy management promoted in HCIP Datacom Campus Network design.
In contrast,SSID-based rate limitingcontrols bandwidth at the service level. It limits total traffic for an entire SSID, which affects all users connected to that SSID collectively, rather than individually.Radio-based rate limitingcontrols bandwidth per radio interface, focusing on wireless resource optimization instead of user- level fairness.ACL-based rate limitingis mainly used for traffic classification and control in wired or advanced scenarios and is not suitable for per-user refined wireless traffic control in CloudCampus WLAN deployments.
Therefore, when the requirement is refined traffic control foreach individual wireless user,user-based rate limitingis the most appropriate and effective option. Hence, the correct answer isA.
NEW QUESTION # 84
In MPLS VPN network troubleshooting, if "the PE device has learned the remote CE route, but the local CE device still cannot ping the remote CE", which of the following troubleshooting steps should be performed first?
- A. Check if the MPLS LSP is established on the P device.
- B. Check if the IP address of the VPN instance interface on the local PE device is on the same network segment as the CE device.
- C. Check if the operating system of the remote CE device is running normally.
- D. Check if the BGP VPNv4 neighbor between PE devices is established normally.
Answer: B
NEW QUESTION # 85
In the OSPF protocol for wide area networks, the purpose of the ABR in an "NSSA area" converting a Type 7 LSA to a Type 5 LSA is which of the following?
- A. Enable external routes from the AS to be propagated to non-NSSA areas (such as ordinary areas).
- B. Facilitates routers within the NSSA area to learn external AS routes.
- C. Prevent Type 7 LSA from forming a loop in the backbone region (Area 0).
- D. Reduce the number of LSAs within the NSSA area and simplify the routing table.
Answer: A
NEW QUESTION # 86
In Huawei's WAN bandwidth optimization solution, which of the following technologies can
"cachive duplicate HTTP requests transmitted in the link to avoid repeatedly sending requests to the server"?
- A. HTTP caching proxy technology
- B. Link aggregation technology
- C. Data compression technology
- D. Deduplication technology
Answer: A
NEW QUESTION # 87
In the Huawei SD-WAN iMaster NCE-WAN management platform, which of the following functions can "simulate different link failure scenarios (such as internet link interruption) to test whether service switching is normal"?
- A. Network Fault Simulation and Drills
- B. Equipment hardware failure alarm
- C. Bandwidth usage statistics
- D. Configure compliance checks
Answer: A
NEW QUESTION # 88
In Huawei's WAN bandwidth management solution, which of the following functions can "real-time statistics on bandwidth usage of each department and generate multi-dimensional reports (such as by day/by department)"?
- A. Bandwidth quota management
- B. Application Traffic Shaping
- C. Bandwidth usage statistics and report analysis
- D. Deduplication
Answer: C
NEW QUESTION # 89
In Huawei's WAN management platform, which of the following functions can "generate device configuration compliance reports (such as whether ACLs are configured and whether authentication is enabled) to assist in security auditing"?
- A. Configure compliance checks and report generation
- B. Equipment hardware resource monitoring
- C. Network topology visualization
- D. Batch distribution of configuration templates
Answer: A
NEW QUESTION # 90
In the OSPF protocol for wide area networks, which type of LSA will the ABR of a "Stub area " publish to the area to guide routers within the area to access external networks?
- A. Type 5 LSA (AS External Route)
- B. Type 3 LSA Inter-area summary route
- C. Type 7 LSA (NSSA External Router)
- D. Type 3 LSA default route (0.0.0.0/0)
Answer: D
NEW QUESTION # 91
In Huawei's WAN bandwidth optimization solution, which of the following technologies can
"reduce the transmission of duplicate attachments and improve email sending efficiency" for
"email attachment traffic transmitted across regions"?
- A. Send email attachments directly without performing duplicate checks.
- B. Duplicate attachment caching based on attachment fingerprint (attachments that have already been transmitted will not be sent again).
- C. Compress all email attachments without changing the number of transmissions.
- D. Limit email attachment size and prohibit the transmission of large attachments.
Answer: B
NEW QUESTION # 92
In an MPLS VPN network, which of the following descriptions best describes the function of a
"VPN label (inner label)"?
- A. Used by PE devices to identify the VPN instance to which data packets belong, thus achieving route isolation.
- B. Used by CE devices to differentiate between different VPN services and determine forwarding paths.
- C. Used for backbone network forwarding between P devices, identifying the forwarding path.
- D. Used to identify the priority of data packets and ensure QoS (Quality of Service)
Answer: A
NEW QUESTION # 93
(The following figure shows the MAC address table of a Layer 2 VXLAN gateway. Which of the following statements are true?Choose all that apply.)
- A. Both 0000-0000-0010 and 5489-9893-48a3 belong to BD 10 and are in the same Layer 2 broadcast domain.
- B. The outbound interface corresponding to 5489-982d-77e2 is GE1/0/1.20. Because this interface belongs to BD 20, the host with 5489-982d-77e2 can directly communicate with the host with 5489-9893-48a3 at Layer 2.
- C. The outbound interface corresponding to 5489-9893-48a3 is GE1/0/1.10, which belongs to BD 10.
- D. The MAC address entry with the outbound interface 10.3.3.3 is learned from the remote VTEP through the VXLAN tunnel.
Answer: A,C,D
Explanation:
Comprehensive and Detailed 200 to 250 words of Explanation From HCIP Datacom Campus Network documents knowledge without any URL or Links:
In a Layer 2 VXLAN gateway, the MAC address table recordslocal and remote MAC addressesassociated with specific Bridge Domains (BDs) and outbound interfaces. Entries learned fromremote VTEPsare shown with an outbound interface that is aVXLAN tunnel endpoint IP address, such as10.3.3.3, indicating VXLAN-based learning.
StatementAis correct because both MAC addresses0000-0000-0010and5489-9893-48a3are associated with BD 10, meaning they are in the same Layer 2 broadcast domain.
StatementCis correct because MAC entries learned with an outbound interface displayed as an IP address representremote MAC addresses learned through the VXLAN tunnel.
StatementDis also correct. The MAC address5489-9893-48a3is learned from the local physical subinterface GE1/0/1.10, which belongs toBD 10, confirming local access.
StatementBis incorrect. Even though5489-982d-77e2is associated withGE1/0/1.20 (BD 20), hosts inBD 20 and BD 10 cannot communicate directly at Layer 2because they belong to different bridge domains.
Therefore, the correct answers areA, C, and D.
NEW QUESTION # 94
In Huawei's WAN solution, regarding the issue of "blurry and stuttering video conferencing across regions," which of the following troubleshooting steps should be performed first?
- A. Check if the DNS configuration of the CE device is correct.
- B. Check if the video conferencing traffic is configured with the DSCP EF flag (high priority).
- C. Check if public internet services are consuming excessive bandwidth.
- D. Check if the memory usage of the branch equipment is too high.
Answer: B
NEW QUESTION # 95
(Refer to the following routing entries queried using a command on the VTEP. Which of the following statements about these routes are true?) Network(EthTagId/IpPrefix/IpPrefixLen) NextHop
*>i 0:172.16.2.0:24 1.1.1.2
*>i 0:172.16.13.0:24 1.1.1.2
*>i 0:192.168.122.0:30 1.1.1.2
- A. These routes carry the L3VNI.
- B. These routes are Type 2 routes and carry host IP addresses.
- C. These routes carry the L2VNI.
- D. These routes are Type 5 routes and carry network segment or mask information.
Answer: A,D
Explanation:
In VXLAN BGP EVPN, different EVPN route types carry different kinds of reachability information. The displayed entries areIP prefix routesbecause each record shows anIP prefix and prefix length(for example,
172.16.2.0:24 and 192.168.122.0:30) rather than a MAC address with a host /32. In HCIP Datacom Campus Network VXLAN EVPN, such network-segment routes are advertised usingEVPN Route Type 5 (IP Prefix Route). Type 5 routes are used to distributeLayer 3 reachabilitybetween VTEPs for inter-subnet/inter-VRF routing, and they inherently carrynetwork/mask information, which makes statement D correct.
These routes are associated with theL3 VXLAN forwarding plane, meaning they belong to theL3VNI(the VPN instance/VRF context). L3VNI is used for routing between IP subnets in an EVPN VXLAN fabric, while L2VNI is used for pure Layer 2 bridging within a broadcast domain. Because the entries shown are IP prefixes (not MAC learning information), they align withL3VNI-based routing, so statement B is correct and statement A is incorrect.
Statement C is incorrect becauseType 2routes are MAC/IP Advertisement routes typically used for host reachability (often /32) and include MAC information, which is not present in these entries.
NEW QUESTION # 96
In troubleshooting MPLS VPN networks, which of the following tools or commands can help locate the "VPN routing failure" problem? (Multiple choice)
- A. display mpls lsp (to view the MPLS label forwarding path)
- B. Lack of troubleshooting tools, relying on experience-based judgment
- C. Display ip routing-table vpn -instance (to view the VPN instance routing table)
- D. Only check device CPU/memory usage, do not check routing and LSP.
- E. Ping/ Tracer (test connectivity between CE and PE, and between PE and PE)
Answer: A,C,E
NEW QUESTION # 97
In Huawei's WAN bandwidth management solution, which of the following functions can "limit bandwidth for non-critical services such as P2P downloads and online video to ensure the performance of core services such as ERP and VoIP"?
- A. Application-type-based bandwidth limiting policy (limiting bandwidth for non-critical services)
- B. Shut down non-critical services and only allow core services to access the network.
- C. Prioritize bandwidth allocation for non-critical services; allocate bandwidth for core services as needed.
- D. All services are allocated the same bandwidth without any restrictions.
Answer: A
NEW QUESTION # 98
In Huawei's WAN bandwidth management solution, which of the following functions can "set bandwidth allocation for different service types (such as VoIP, video, and file transfer) (e.g., VoIP
20%, video 50%) to avoid single-service monopolizing bandwidth"?
- A. All services share bandwidth, with no percentage restrictions.
- B. Shut down non-critical services and allow only core services to use bandwidth.
- C. Bandwidth allocation strategy based on service type
- D. Only VoIP service bandwidth is guaranteed; there is no limit on the proportion for other services.
Answer: C
NEW QUESTION # 99
In the wide area network IPv6 transition scenario, if "internal IPv6 terminals need to access IPv4 internet resources but do not have public IPv4 addresses", which of the following technologies should be used?
- A. IPv4/IPv6 dual-stack technology (requires the enterprise to have a public IPv4 address)
- B. IPv6 over IPv4 tunnel (only enables communication between IPv6 terminals)
- C. DNS64 + NAT64 (Enables IPv6 access to IPv4 even without a public IPv4 address)
- D. Close the IPv6 terminal and use IPv4 access instead.
Answer: C
NEW QUESTION # 100
In Huawei's SD-WAN solution, which of the following technologies can "automatically re-establish a VPN tunnel with headquarters after a branch device changes its public IP address, without manual intervention"?
- A. Disable the VPN tunnel automatic reconnection function; manual triggering is required.
- B. SD-WAN Dynamic IP Adaptation Technology (Automatically detects changes in public IP address and re-initiates tunnel connection)
- C. Fixed public IP address for branch offices; dynamic changes are not supported.
- D. Manually reconfigure VPN tunnel parameters and update the public IP address.
Answer: B
NEW QUESTION # 101
(Which of the following are iMaster NCE-Campus license business models?Choose all that apply.)
- A. Tenant Subscription license (SaaS Mode)
- B. Global perpetual license (a-la-carte mode)
- C. Global subscription license (IaaS Mode)
- D. Global perpetual license (N1 mode)
Answer: A,B,D
Explanation:
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.
NEW QUESTION # 102
In an MPLS VPN network, which of the following failures will cause "MPLS LSPs between PE devices to fail to be established, and VPN data to fail to be forwarded"?
- A. The routing protocol on the CE device is configured correctly.
- B. BGP VPNv4 neighbors are established normally between PE devices.
- C. MPLS LSR-ID is not configured on the PE device.
- D. OSPF neighbor between PE and CE is established normally.
Answer: C
NEW QUESTION # 103
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