[2026年01月]更新のHuawei H12-841_V1.5公式認定ガイドPDF [Q184-Q209]

[2026年01月]更新のHuawei H12-841_V1.5公式認定ガイドPDF

試験H12-841_V1.5 HCIP-Datacom-Campus Network Planning and Deployment V1.5

質問 # 184
In the OSPF protocol of a wide area network, which type of LSA will the ASBR of an "NSSA area
" advertise to the area to transmit external IPv6 routes to the AS?

• A. Type 7 LSA (NSSA IPv4 External Router)
• B. Type 5 LSA (IPv4 External Router)
• C. Type 9 LSA (OSPFv3 NSSA External IPv6 Router)
• D. Type 8 LSA (OSPFv3 Link-Local LSA)

正解：C

質問 # 185
In Huawei's SD-WAN solution, for the scenario where " branches need to access both headquarters VPN services and public internet services simultaneously," which of the following technologies can "achieve traffic splitting and forwarding of the two types of services on the same physical link"?

• A. Traffic routing strategy based on business type (VPN traffic goes through a tunnel, public network traffic is forwarded directly).
• B. Only allow access to the VPN service; prohibit internet access.
• C. All business operations are routed through headquarters before accessing the public network, increasing latency.
• D. Use two independent physical links, each carrying different services.

正解：A

質問 # 186
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. Dynamic path switching based on link state (automatic switching to backup links when a link fails)
• B. Relies on only a single internet link, with no redundancy .
• C. Application-based priority scheduling (e.g., prioritizing VoIP services)
• D. Static routing uses a fixed route (not adjusted based on link status).
• E. Multi-link quality detection (real-time monitoring of bandwidth, latency, and packet loss rate)

正解：A、C、E

質問 # 187
In the OSPF protocol for wide area networks, which of the following types of LSAs (Link State Advertisements) can "propagate throughout the entire OSPF Autonomous System, describing external routes of the AS"?

• A. Type 2 (Network LSA)
• B. Type 3 (Network Summary LSA)
• C. Type 5 (AS External LSA)
• D. Type 1 (Router LSA)

正解：C

質問 # 188
In an MPLS VPN network, which of the following descriptions does NOT conform to the forwarding behavior of a "P device"?

• A. Does not maintain any VPN instance or VPN routing information.
• B. Inner VPN label that does not recognize data packets
• C. Requires participation in routing protocol interaction between CE and PE.
• D. Forwarding based solely on the public network label on the outer layer of the data packet.

正解：C

質問 # 189
In the deployment of BGP routing policies in a wide area network, which of the following BGP attributes can be used to "control route reception and advertising" to achieve route optimization?
(Multiple choice)

• A. No routing policy is configured; all BGP routes are received and advertised .
• B. Local Preference (Controls route preference within the local AS)
• C. MED (Affects the preferred order of routing for other ASs)
• D. Ignore BGP attributes and prioritize routes based solely on prefix length.
• E. AS_PATH (Filter routes by AS path length or specific AS)

正解：B、C、E

質問 # 190
In Huawei's WAN solution, for the scenario of " high WAN link latency leading to slow database query response", which of the following technologies can "optimize database query performance and reduce response latency"?

• A. Database query caching (edge node caching of duplicate query results) + query statement optimization
• B. Increase the CPU configuration of the database server without optimizing the transmission process.
• C. Reduce the frequency of query requests to decrease server load.
• D. Execute the query request directly without optimization.

正解：A

質問 # 191
In the WAN BGP protocol, which of the following attributes is a "generally recognized mandatory attribute of BGP routes, used to identify the next-hop IP address of the route"?

• A. Next Hop
• B. MED
• C. AS_PATH
• D. Local Preference

正解：A

質問 # 192
In an MPLS VPN network, after the CE device learns the VPN route from the PE device, which of the following operations can "ensure that the CE device uses the route for local service forwarding"?

• A. Remove the learned VPN routes on the CE device and use the default routes.
• B. Configure a static route on the CE device pointing to the PE device.
• C. Enable routing protocols (such as OSPF/BGP) on the CE device to interact with the PE device.
• D. No configuration is required on the CE device; it uses the learned routes by default.

正解：C

質問 # 193
In troubleshooting MPLS VPN networks, which of the following tools or commands can help locate the "VPN routing failure" problem? (Multiple choice)

• A. Only check device CPU/memory usage, do not check routing and LSP.
• B. display mpls lsp (to view the MPLS label forwarding path)
• C. Lack of troubleshooting tools, relying on experience-based judgment
• D. Ping/ Tracer (test connectivity between CE and PE, and between PE and PE)
• E. Display ip routing-table vpn -instance (to view the VPN instance routing table)

正解：B、D、E

質問 # 194
In the OSPF protocol for wide area networks, what is the propagation range of Type 3 LSA (Network Summary LSA)?

• A. Spreads only within the core area (Area 0)
• B. Propagate throughout the entire OSPF autonomous system (except NSSA areas)
• C. Propagates only within the region where the LSA was generated.
• D. Propagates in the region where the LSA was generated and its adjacent regions.

正解：D

質問 # 195
In MPLS VPN network planning, which of the following components are the core elements for building an L3VPN (Layer 3 VPN)? (Multiple choice)

• A. P equipment (Provider, backbone provider equipment)
• B. Physical leased line (can build a Layer 3 VPN without MPLS protocol )
• C. PE device (Provider Edge)
• D. VLAN segmentation (only used for Layer 2 isolation, unrelated to Layer 3 VPN)
• E. CE equipment (Customer Edge)

正解：A、C、E

質問 # 196
In an MPLS VPN network, when a CE device advertises a local route to a PE device, which of the following conditions is NOT a necessary condition for the PE device to include the route in the corresponding VPN instance?

• A. The routing protocol configuration has specified that routes advertised by CE be imported into the VPN instance.
• B. The PE device interface is bound to the corresponding VPN instance.
• C. The routing protocol between CE and PE has been established normally (e.g., BGP Neighbor Up).
• D. The MPLS LDP protocol is already enabled on the PE device.

正解：D

質問 # 197
In MPLS VPN network troubleshooting, if it is necessary to "view the ARP table of the VPN instance on the PE device to confirm whether the CE device's MAC address is being learned normally", which of the following commands should be used?

• A. Display IP routing-table VPN instance [instance name]
• B. display mpls lsp
• C. display arp VPN instance [instance name]
• D. display bgp vpnv4 all routes

正解：C

質問 # 198
In Huawei's WAN solution, which of the following technologies can "quickly detect WAN link faults, achieve millisecond-level fault awareness, and shorten recovery time"?

• A. BFD (Bidirectional Forwarding Detection)
• B. Manual ping test
• C. Static route timeout mechanism (default 3 minutes)
• D. OSPF hello protocol (default 10s detection)

正解：A

質問 # 199
Huawei's SD-WAN solution targets " multi-tenant isolation" scenarios. Which of the following technologies can achieve "isolation of network resources and data between different tenants" and protect tenant privacy? (Multiple choice)

• A. All tenants share the same network instance, with no isolation mechanism.
• B. Tenant traffic is unencrypted, allowing mutual data access .
• C. Dedicated bandwidth resources (dedicated bandwidth allocated to each tenant, not shared)
• D. Traffic encryption and isolation (different encryption keys are used for traffic from different tenants)
• E. Tenant instance isolation (creating a separate SD-WAN instance for each tenant)

正解：C、D、E

質問 # 200
In a wide area network (WAN) OSPF network, in which of the following scenarios is it necessary to deploy "OSPF Virtual Links " to solve the problem of routing interoperability between areas?
(Multiple choice)

• A. Non-core regions (such as Area 1) are not directly connected to the core region (Area 0).
• B. Use only static routes to connect non-backbone areas; no virtual links are needed.
• C. In a Layer 2 network, OSPF virtual links are not required .
• D. The backbone area Area 0 is divided into two parts, requiring virtual link connections.
• E. All areas are directly connected to Area 0, requiring no virtual links.

正解：A、D

質問 # 201
In Huawei's WAN solution, for the scenario of " transferring large files across regions", which of the following technologies can "improve transmission speed and reduce transmission time "?

• A. Segmented transmission (breaking a large file into smaller segments for parallel transmission)
• B. Relying solely on increasing link bandwidth without optimizing the transmission mechanism.
• C. Plaintext transmission (unencrypted, reducing processing time)
• D. Lower the file priority and transfer it during idle periods.

正解：A

質問 # 202
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. Token bucket-based traffic smoothing technology (controlling file sending rate to avoid sudden rate fluctuations)
• C. Ignore bandwidth fluctuations and transfer files directly.
• D. Lower the priority of file transfers and prioritize other services.

正解：B

質問 # 203
In Huawei's WAN solution, regarding the issue of "echoes in cross-regional voice services (VoIP)," which of the following troubleshooting steps should be performed first?

• A. Check if the routing table of the CE device includes the VoIP server network segment.
• B. Check if the MPLS LSP of the PE device is established.
• C. Check if echo cancellation is enabled on the VoIP gateway.
• D. Check if the link bandwidth is sufficient.

正解：C

質問 # 204
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. Enable BGP route aggregation
• B. Configure BGP neighbor MD5 authentication
• C. Adjust BGP Local Preference properties
• D. Use a prefix-list to reject the network segment in the BGP neighbor inbound direction.

正解：D

質問 # 205
In an MPLS VPN network, which of the following failures would cause "the PE device to be unable to export VPNv4 routes to the CE device"?

• A. The VPN instance and interface are correctly bound on the PE device.
• B. Routing protocol neighbor has not been established between the PE device and the CE device.
• C. MPLS LSPs between PE devices are established normally.
• D. A routing policy has been configured on the PE device to export VPNv4 routes to the CE-PE routing protocol.

正解：B

質問 # 206
Huawei's SD-WAN solution targets "Zero-Provisioning for Branches (ZTP)". Which of the following features can simplify the commissioning process for branch devices? (Multiple choice)

• A. No manual on-site configuration required, achieving " plug and play" functionality.
• B. The configuration file needs to be copied to the device via USB flash drive, which is inefficient .
• C. Automatically download and apply configuration files from the management platform.
• D. Requires manual on-site configuration of device IP and management address.
• E. The device automatically obtains its IP address and management platform address after power-on.

正解：A、C、E

質問 # 207
In the Huawei SD-WAN iMaster NCE-WAN management platform, which of the following functions can "perform syntax validation on the configuration of branch devices to avoid device failure due to configuration errors"?

• A. Configure syntax validation and error messages
• B. Network topology visualization
• C. Batch distribution of configuration templates
• D. Equipment hardware resource monitoring

正解：A

質問 # 208
In Huawei's WAN bandwidth management solution, which of the following functions can achieve
"refined control of bandwidth resources" to avoid bandwidth abuse? (Multiple choice)

• A. Bandwidth quotas based on users/departments (e.g., 100Mbps bandwidth allocated to the marketing department).
• B. No bandwidth quota; all users share bandwidth, prone to congestion.
• C. Bandwidth usage statistics and report generation (bandwidth usage analysis by time/application)
• D. Without bandwidth usage statistics, it is impossible to pinpoint the source of bandwidth abuse .
• E. Application bandwidth limiting (e.g., P2P download speed limited to 10Mbps)

正解：A、C、E

質問 # 209
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