Ultimate Guide to Prepare H12-841_V1.5 with Accurate PDF Questions [Sep 12, 2026]
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NEW QUESTION # 31
In the Huawei SD-WAN iMaster NCE-WAN management platform, which of the following functions can "manage the configuration of branch devices and support configuration rollback to historical versions"?
- A. Device CPU utilization monitoring
- B. Batch distribution of configuration templates
- C. Configure version management and rollback
- D. Network topology visualization
Answer: C
NEW QUESTION # 32
In Huawei's SD-WAN solution, which of the following security features can "filter illegal application traffic (such as malware downloads) accessing branch devices to ensure network security"?
- A. IPsec encrypted tunnel
- B. Bandwidth quota management
- C. Application Layer Firewall (ACL / Application Identification Filtering)
- D. Link quality detection
Answer: C
NEW QUESTION # 33
In the deployment of the OSPF protocol in a wide area network, what is the core function of the
"Stub area"?
- A. Prohibit the publication of Type 5 LSAs within the area, only allow Type 3 LSAs (inter-area summary routes), and reduce the number of route entries.
- B. Disable OSPF authentication and simplify the configuration process.
- C. Allow the advertising of Type 5 LSAs (AS external routes) within the area.
- D. Achieve indirect connection between non-backbone regions and Area 0.
Answer: A
NEW QUESTION # 34
(After NAT traversal is enabled, if a NAT device is detected during IKE negotiation between two gateways, ESP packets are encapsulated with a UDP header. Both the source and destination port numbers are set to
________ (Enter only digits.) in the header. This enables ESP packets to pass through the NAT device.)
Answer:
Explanation:
4500
Explanation:
In IPsec VPN deployment, NAT traversal (NAT-T) is a critical mechanism used when one or both IPsec gateways are located behind a NAT device. Traditional ESP packets use IP protocol number 50 and do not contain TCP or UDP port numbers, which causes problems for NAT devices that rely on port information to maintain session mappings. As a result, ESP packets may be dropped by the NAT device.
During IKE negotiation, the two gateways detect whether a NAT device exists between them by exchanging NAT-detection payloads. If NAT is detected,NAT traversal is automatically enabled. When NAT-T is active, ESP packets are encapsulated insideUDP packetsso that they can traverse the NAT device successfully.
According to HCIP Datacom Campus Network security documentation, when ESP is encapsulated using NAT-T,both the source and destination UDP port numbers are set to 4500. UDP port 4500 is the standardized port reserved specifically for IPsec NAT traversal. This allows NAT devices to correctly track sessions and forward packets based on UDP port information.
Initially, IKE negotiations use UDP port 500. After NAT detection and NAT-T activation, subsequent IKE and ESP traffic switches toUDP port 4500. This encapsulation ensures compatibility with NAT environments while maintaining IPsec security.
Therefore, the correct value that enables ESP packets to pass through NAT devices is4500, which is a key operational detail in secure campus network VPN deployments.
NEW QUESTION # 35
In Huawei's SD-WAN solution, which of the following technologies can "automatically learn routes between branch devices and public clouds (such as Huawei Cloud) without requiring manual configuration of static routes"?
- A. Manually configure static routes to point to the cloud network segment.
- B. All cloud access traffic is relayed through headquarters.
- C. Disable routing protocols on branch devices
- D. Cloud Route Auto Import
Answer: D
NEW QUESTION # 36
In the deployment of the OSPF protocol in a wide area network, what is the core function of the ABR (Area Border Router)?
- A. Disable OSPF and use static routes to connect different areas.
- B. Forward routes only within a single OSPF area, not across areas.
- C. Connect different OSPF areas and pass inter-area routes (such as Type 3 LSA).
- D. Only external AS routes (Type 5 LSA) are transmitted; inter-area routes are not transmitted.
Answer: C
NEW QUESTION # 37
In an MPLS VPN network, which of the following failures would cause "PE devices to be unable to learn VPNv4 routes from other PE devices"?
- A. BGP VPNv4 neighbor between PE devices is established normally.
- B. MPLS LSP between PE devices has not been established.
- C. A routing policy has been configured on the PE device to import CE routes into the BGP VPNv4 address family.
- D. OSPF neighbor between CE device and PE device is established normally.
Answer: B
NEW QUESTION # 38
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. Deduplication technology
- B. HTTP caching proxy technology
- C. Data compression technology
- D. Link aggregation technology
Answer: B
NEW QUESTION # 39
In Huawei's SD-WAN solution, for the " branch multi-link (Internet + MPLS) access" scenario, which of the following technologies can "detect link quality in real time and select the optimal link for different services"?
- A. Allocate service traffic only based on link bandwidth.
- B. Link priorities are preset manually and not dynamically adjusted.
- C. Link Quality Detection (LQM) + Service Link Matching Strategy
- D. Static routes are bound to fixed links.
Answer: C
NEW QUESTION # 40
In Huawei's SD-WAN solution, which of the following technologies can "enable a VPN tunnel between branch devices and headquarters that traverses NAT devices (such as home routers)"?
- A. Manually configure static NAT mapping to expose the public IP address of the branch device.
- B. Disable the address translation function of the NAT device and communicate directly using the public IP address.
- C. All branch devices use the same public IP address, and a tunnel is established through port multiplexing.
- D. SD-WAN NAT traversal technology (branches proactively initiate tunnel connections to headquarters, eliminating the need for static mapping)
Answer: D
NEW QUESTION # 41
In an MPLS VPN network, when a data packet is forwarded from the PE device to the CE device, which of the following operations will the PE device perform to process the tag?
- A. Retain the outer public network label, only strip the inner VPN label.
- B. Strip the outer public network label, retain the inner VPN label, and forward it to CE.
- C. Retain the double-layer label and forward it directly to the CE device.
- D. Simultaneously strip the outer public network label and the inner VPN label, and forward the data to CE according to the IP address.
Answer: D
NEW QUESTION # 42
In Huawei's SD-WAN solution, which of the following technologies can "ensure that the service session is not interrupted (such as TCP session persistence) when the VPN tunnel between branch equipment and headquarters switches"?
- A. Link switching technology based on session state synchronization (synchronizing session state before switching and restoring it after switching)
- B. All service sessions are disconnected during link switching and need to be re-established.
- C. Only UDP session persistence is supported; TCP session persistence is not supported.
- D. Disable session persistence to reduce resource consumption.
Answer: A
NEW QUESTION # 43
(Huawei iMaster NCE-Campus provides the financial SD-WAN SRv6 solution to help the financial industry implement end-to-end scheduling. To use this function, you need to obtain the SRv6 function package license.)
- A. FALSE
- B. TRUE
Answer: B
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 advanced networking solutions tailored for industry-specific scenarios, including thefinancial SD-WAN SRv6 solution. This solution leverages Segment Routing over IPv6 (SRv6) to enable precise traffic steering, deterministic forwarding, and end-to-end service scheduling across the network.
Because SRv6 introduces enhanced forwarding capabilities and control-plane features beyond standard campus networking functions, Huawei licenses these capabilities separately. To activate SRv6-based financial SD-WAN features on iMaster NCE-Campus, customers must obtain theSRv6 function package license.
Without this license, SRv6-specific orchestration, scheduling, and optimization functions cannot be enabled.
According to HCIP Datacom Campus Network documentation, licensing ensures controlled feature activation and aligns with Huawei's modular service enablement strategy. Therefore, the statement is TRUE, and option A is correct.
NEW QUESTION # 44
In the OSPF protocol for wide area networks, which of the following is the propagation range of Type 4 LSA (ASBR Summary LSA)?
- A. Spreads only within the core area (Area 0)
- B. Propagate throughout the entire OSPF autonomous system (except NSSA areas)
- C. Propagation in the area where the ASBR is located and its adjacent areas.
- D. Spreads only within the area where ASBR is located.
Answer: B
NEW QUESTION # 45
In the WAN BGP protocol, if "route reflectors are configured between IBGP neighbors, and route transmission between the reflector's client and non-client is normal," then which of the following loop prevention mechanisms is in effect?
- A. IBGP split horizon (IBGP neighbors do not forward routes to each other)
- B. Route Reflector Cluster List Anti-loop (records reflector cluster IDs to prevent loops)
- C. AS_PATH loop prevention (check if the route includes the local AS number)
- D. MED attribute loop prevention (determining route priority based on MED value)
Answer: B
NEW QUESTION # 46
(When a BGP EVPN route is transmitted between VTEPs, the BGP EVPN route is discarded only when the RT carried in the route is different from both the EVPN IRT and IP VPN IRT.)
- A. FALSE
- B. TRUE
Answer: B
Explanation:
In a Huawei VXLAN BGP EVPN architecture,Route Targets (RTs)play a critical role in controlling route import and export between VPN instances on different VTEPs. When a BGP EVPN route is received by a VTEP, the device determines whether the route should be accepted or discarded based on RT matching rules.
According to HCIP Datacom Campus Network documentation, a received EVPN route is considered validas long as its RT matches either the EVPN Import Route Target (EVPN IRT) or the IP VPN Import Route Target (IP VPN IRT)configured on the local device. This design enables flexible route sharing between Layer
2 EVPN services and Layer 3 VPN services, supporting integrated routing and bridging (IRB) scenarios and inter-VNI communication.
If the RT carried in the EVPN route matches at least one of these import RTs, the route is imported into the corresponding VPN instance and can be used for traffic forwarding. Only when the RT doesnot match both the EVPN IRT and the IP VPN IRTwill the route be discarded. This mechanism ensures proper isolation between tenants while still allowing controlled route exchange where required.
Therefore, the statement accurately describes the EVPN route filtering logic used between VTEPs in Huawei VXLAN networks. The route is discardedonly when the RT differs from both configured import RTs, making the statementTRUE.
NEW QUESTION # 47
In a WAN BGP protocol deployment, if it is necessary to " reject receiving routes to a specific network segment advertised by a neighbor (such as (192.168.10.0/24)"), which of the following filtering policies should be configured?
- A. Adjust BGP Local Preference properties
- B. Enable BGP route aggregation
- C. Configure BGP neighbor MD5 authentication
- D. Use a prefix-list to reject the network segment in the BGP neighbor inbound direction.
Answer: D
NEW QUESTION # 48
(To isolate communication between wired terminals, you can enable port isolation on the access switches.
However, APs cannot implement wireless user isolation.)
- A. FALSE
- B. TRUE
Answer: A
Explanation:
Comprehensive and Detailed 200 to 250 words of Explanation From HCIP Datacom Campus Network documents knowledge without any URL or Links:
Port isolation is commonly used on access switches to preventwired terminalsfrom communicating directly with each other at Layer 2. This enhances security by blocking lateral attacks and unnecessary broadcast traffic.
Forwireless users, Huawei APs and WLAN controllers (or central APs in agile distributed scenarios) provide wireless user isolationmechanisms. Wireless user isolation prevents clients connected to the same SSID or AP from directly communicating with each other, even though they share the same wireless medium. This is widely used in guest networks, dormitories, and public WLAN environments.
Therefore, the statement that APs cannot implement wireless user isolation is incorrect. According to HCIP Datacom Campus Network WLAN design principles,wireless user isolation is fully supported by APs, either locally or under centralized control.
Hence, the statement is FALSE, and option B is correct.
NEW QUESTION # 49
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. Close the IPv6 terminal and use IPv4 access instead.
- C. DNS64 + NAT64 (Enables IPv6 access to IPv4 even without a public IPv4 address)
- D. IPv6 over IPv4 tunnel (only enables communication between IPv6 terminals)
Answer: C
NEW QUESTION # 50
In an MPLS VPN network, which of the following technologies can "create an independent routing table for each VPN user, achieving isolation at the routing layer"?
- A. VPN Instance (VRF)
- B. VLAN segmentation
- C. Access Control List (ACL)
- D. MPLS tag encapsulation
Answer: A
NEW QUESTION # 51
(On the Device Management page of iMaster NCE-Campus, which of the following functions will automatically enable the SSH proxy tunnel of the network device?)
- A. Command Line
- B. Summary
- C. Entry Query
- D. Device Configuration
Answer: A
Explanation:
In iMaster NCE-Campus, device management functions are tightly integrated with secure remote access mechanisms to ensure safe and efficient O&M operations. One such mechanism is theSSH proxy tunnel, which allows administrators to remotely access managed devices through the controller without directly exposing device management interfaces to the external network.
According to HCIP Datacom Campus Network documentation, theSSH proxy tunnel is automatically established when the Command Line function is usedon the Device Management page. When an administrator clicks theCommand Lineoption, iMaster NCE-Campus dynamically builds a secure SSH proxy channel between the controller and the target device. This enables real-time CLI access to the device through the web interface while maintaining strict security controls.
Other functions such asSummary,Entry Query, andDevice Configurationdo not require direct CLI interaction with the device. These functions rely on management protocols and configuration delivery mechanisms such as NETCONF or telemetry, and therefore do not trigger the establishment of an SSH proxy tunnel.
The Command Line function is specifically designed for scenarios such as advanced troubleshooting, manual verification, or executing device-level commands. Automatically enabling the SSH proxy tunnel at this moment ensures that CLI access is bothsecure and on-demand, reducing attack surfaces and simplifying remote maintenance.
Therefore, the function that automatically enables the SSH proxy tunnel isCommand Line, making optionDthe correct answer.
NEW QUESTION # 52
In Huawei's WAN solution, for scenarios where " intermittent packet loss occurs in the WAN link," which of the following technologies can "ensure the reliability of data transmission through a retransmission mechanism"?
- A. TCP-based retransmission mechanism (automatic retransmission of lost data packets)
- B. Ignoring packet loss and not performing any retransmission processing leads to data loss.
- C. Relies solely on link-layer retransmissions, without handling network-layer packet loss.
- D. Reduce the transmission rate to forcibly reduce the probability of packet loss.
Answer: A
NEW QUESTION # 53
In Huawei's SD-WAN solution, which of the following technologies can achieve "intelligent routing between branches and headquarters/cloud" to ensure the experience of critical business operations? (Multiple choice)
- A. Multi-link quality detection (real-time monitoring of bandwidth, latency, and packet loss rate)
- B. Application-based priority scheduling (e.g., prioritizing VoIP services)
- C. Relies on only a single internet link, with no redundancy .
- D. Dynamic path switching based on link state (automatic switching to backup links when a link fails)
- E. Static routing uses a fixed route (not adjusted based on link status).
Answer: A,B,D
NEW QUESTION # 54
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