H12-841_V1.5 Practice Exam Tests Latest Updated on Mar-2026
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NEW QUESTION # 52
(As shown in the following figure, R1 and R2 establish an IPsec VPN in ISAKMP mode for communication.
For IPsec proposals on R1 and R2, ESP is used, the encapsulation mode is set to tunnel mode, SHA1 is configured as the authentication algorithm, and AES-256 is configured as the encryption algorithm. In addition, IKEv1 is configured for IKE peers, the main mode is configured for IKEv1 negotiation phase 1, and the PSK Huawei@123 is configured for PSK authentication between IKE peers. For IKE proposals on R1 and R2, SHA1 is configured as the authentication algorithm, AES-256 is configured as the encryption algorithm, and DH group 1 is configured for IKE negotiation. Based on these configurations on R1 and R2, drag the configuration items on the left to the correct locations on the right.)
Answer:
Explanation:
Explanation:
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. The exchange-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.
NEW QUESTION # 53
In an MPLS VPN network, when a PE device receives a VPNv4 route from another PE device, which of the following information is used to "identify the VPN instance to which the route belongs, and avoid route confusion"?
- A. VPN Route Distinguisher (RD)
- B. MPLS public network label
- C. IPv4 routing prefix
- D. MAC address of the CE device
Answer: A
NEW QUESTION # 54
(Which of the following technologies can be used to isolate users in the same VLAN, enhance user communication security, and prevent invalid broadcast packets from affecting services?)
- A. Ethernet port security
- B. Port isolation
- C. Super VLAN
- D. IPSG
Answer: C
Explanation:
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.
NEW QUESTION # 55
In Huawei's WAN solution, which of the following technologies can optimize the transmission experience of "cross-regional video conferencing" and reduce lag and latency? (Multiple choice)
- A. Video traffic priority scheduling (based on DSCP tag priority forwarding of video data packets)
- B. Edge node caching (caching video streams locally to reduce long-distance transmission latency)
- C. No traffic priority; video and regular data compete for bandwidth.
- D. Dynamic bandwidth adjustment (adjusting video bitrate based on link load)
- E. Fixed video bitrate, not adjusted according to link status .
Answer: A,B,D
NEW QUESTION # 56
(Which of the following is the mapping between VNIs and BDs in VXLAN implementation?)
- A. N:1
- B. 1:N
- C. N:M
- D. 1:1
Answer: D
Explanation:
In Huawei VXLAN implementations described in HCIP Datacom Campus Network documentation, the relationship between aVXLAN Network Identifier (VNI)and aBridge Domain (BD)is aone-to-one (1:1) mapping. Each BD represents a Layer 2 broadcast domain in the VXLAN overlay network, and each BD is uniquely identified by a single VNI.
The VNI is carried in the VXLAN header and is used by VTEPs to determine which virtual Layer 2 network the encapsulated traffic belongs to. When a packet is received, the VTEP decapsulates the VXLAN header and forwards the traffic to the corresponding BD based on the VNI value. Because of this mechanism, a single BD can only be associated with one VNI, and a VNI can only represent one BD.
This strict 1:1 mapping simplifies traffic forwarding, MAC address learning, and broadcast, unknown unicast, and multicast (BUM) traffic handling. It also ensures clear isolation between different virtual networks, which is essential for multi-tenant campus and data center environments. Allowing multiple BDs to map to one VNI or vice versa would break traffic isolation and complicate forwarding logic.
Therefore, Huawei VXLAN design enforces a one-to-one relationship between VNIs and BDs, making1:1the correct answer.
NEW QUESTION # 57
In the WAN BGP protocol, which of the following attributes can be used to "identify the sequence of autonomous systems traversed by the route and prevent routing loops"?
- A. Next Hop
- B. MED
- C. Local Preference
- D. AS_PATH
Answer: D
NEW QUESTION # 58
In Huawei's SD-WAN solution, which of the following technologies can "ensure that VPN service traffic and Internet service traffic between branches and headquarters are isolated and transmitted on the same physical link"?
- A. Network slicing (allocating independent logical channels to different services)
- B. No isolation mechanism; different services share the same channel.
- C. Use only two independent physical links to transmit different services separately.
- D. Link aggregation (binding multiple physical links into a single logical link)
Answer: A
NEW QUESTION # 59
In Huawei's WAN bandwidth optimization solution, for "real-time collaboration tool traffic transmitted across regions (such as Teams, Zoom)," which of the following technologies can
"ensure the smoothness of real-time voice/video and reduce lag"?
- A. Limit real-time bandwidth and prioritize file transfer.
- B. Application protocol-based acceleration technologies (such as optimizing the Real-time Transport Protocol, RTP)
- C. Transmit traffic directly without any optimization.
- D. All real-time traffic is relayed through headquarters, increasing latency.
Answer: B
NEW QUESTION # 60
In an MPLS VPN network, which of the following configurations is a necessary condition for "PE devices and CE devices to exchange routes via RIP "?
- A. Disable BGP VPNv4 address family on the PE device and use only RIP.
- B. The PE device enables the RIP protocol under the corresponding VPN instance and is configured with the same RIP version as the CE device.
- C. Configure the RIP protocol on the P device to transmit PE-CE routes.
- D. The MPLS protocol is enabled on the CE device, supporting RIP label forwarding.
Answer: B
NEW QUESTION # 61
In the OSPF protocol for wide area networks, what is the core function of the "NSSA (Not-So- Stubby Area)"?
- A. Achieve indirect connection between non-backbone regions and Area 0.
- B. Disable OSPF authentication and simplify configuration.
- C. Prohibit the publication of Type 5 LSAs within the area; only Type 7 LSAs (NSSA external routes) are allowed.
- D. Allow the advertising of Type 5 LSAs (AS external routes) within the area.
Answer: C
NEW QUESTION # 62
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. MPLS LSR-ID is not configured on the PE device.
- B. BGP VPNv4 neighbors are established normally between PE devices.
- C. The routing protocol on the CE device is configured correctly.
- D. OSPF neighbor between PE and CE is established normally.
Answer: A
NEW QUESTION # 63
Huawei switches support VLAN assignment based on interface, MAC address, protocol, and IP address.
- A. TRUE
- B. FALSE
Answer: A
NEW QUESTION # 64
In Huawei's WAN solution, for scenarios with " excessive WAN link latency (such as intercontinental links)," which of the following technologies can "optimize TCP protocol transmission performance and reduce the impact of latency on services"?
- A. Switching to UDP protocol for transmission does not guarantee reliability.
- B. Reduce TCP transmission rate and decrease data transmission volume.
- C. Enable the TCP window expansion option (increase the TCP receive window).
- D. Use the original TCP configuration directly without optimization.
Answer: C
NEW QUESTION # 65
(Refer to the figure.
Which of the following steps aremandatoryto enable 802.1X authentication on GE0/0/2 and GE0/0/3 of SW3 and configure a RADIUS server to authenticate and deliver network access rights to users?Choose all that apply.)
- A. Configure an AAA scheme.
- B. Configure an authentication domain.
- C. Configure an 802.1X access profile.
- D. Configure an authentication profile.
Answer: A,B,C,D
Explanation:
Comprehensive and Detailed 200 to 250 words of Explanation From HCIP Datacom Campus Network documents knowledge without any URL or Links:
To deploy802.1X authenticationon Huawei campus switches and use aRADIUS serverfor user authentication and authorization, several core configuration components are mandatory. All four options listed are required for a complete and functional deployment.
Anauthentication domainis mandatory because it defines where user authentication requests are processed and which AAA schemes are used. Without a domain, the switch cannot determine how to handle authentication requests, makingoption A mandatory.
Anauthentication profileis also required. This profile binds authentication methods (such as 802.1X), authentication domains, and access policies together. Interfaces reference the authentication profile to determine how users are authenticated, sooption B is mandatory.
An802.1X access profiledefines detailed 802.1X parameters, such as authentication mode, reauthentication behavior, and client handling. This profile is bound to interfaces to enable 802.1X authentication on specific ports, makingoption C mandatory.
Finally, anAAA schemeis essential because it defines the authentication, authorization, and accounting methods used by the device, including RADIUS server configuration. Without an AAA scheme, the device cannot communicate with the RADIUS server or obtain user authorization information. Therefore,option D is mandatory.
According to HCIP Datacom Campus Network documentation, all four configuration steps are required to successfully enable 802.1X authentication with RADIUS-based access control.
NEW QUESTION # 66
In Huawei's WAN solution, for the scenario where " WAN link bandwidth fluctuations cause file transfers to be sometimes fast and sometimes slow," which of the following technologies can
"smooth the impact of bandwidth fluctuations and stabilize file transfer rates"?
- A. Transfer files only during peak bandwidth periods, pausing at other times.
- B. Ignore bandwidth fluctuations and transfer files directly.
- C. Lower the priority of file transfers and prioritize other services.
- D. Token bucket-based traffic smoothing technology (controlling file sending rate to avoid sudden rate fluctuations)
Answer: D
NEW QUESTION # 67
In an MPLS VPN network, which of the following operations can "ensure that the PE device correctly associates the VPN route with the corresponding VPN instance, avoiding route confusion"?
- A. Configure a VPN instance on the P device.
- B. Enable MPLS protocol on CE device
- C. Disable the BGP VPNv4 address family on the PE device.
- D. Bind a VRF instance to the PE device interface.
Answer: D
NEW QUESTION # 68
In Huawei's SD-WAN solution, which of the following service optimization strategies can "assign the highest priority to VoIP services to ensure smooth calls"?
- A. Traffic distribution based on link bandwidth
- B. All services are forwarded with the same priority.
- C. Limit VoIP service bandwidth to avoid consuming excessive resources.
- D. QoS priority scheduling based on application type (VoIP is the highest)
Answer: D
NEW QUESTION # 69
In Huawei's SD-WAN solution, for the scenario of " multi-tenant branch sharing MPLS links", which of the following technologies can "achieve MPLS traffic isolation for different tenants and independently count bandwidth usage"?
- A. Create a separate VPN instance for each tenant and bind it to an MPLS interface sub-interface.
- B. Traffic is segmented by tenant IP address range, without instance isolation.
- C. All tenants share the MPLS link, with no isolation or statistics.
- D. Only total bandwidth usage is counted, without distinguishing between tenants.
Answer: A
NEW QUESTION # 70
In Huawei's SD-WAN solution, which of the following functions can "classify branch service traffic and allocate different bandwidth ratios to different services (such as ERP and video)"?
- A. IPsec encrypted tunnel
- B. Business Traffic Classification and Bandwidth Allocation
- C. Automatic link switching
- D. Link Quality Detection (LQM)
Answer: B
NEW QUESTION # 71
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