H12-811_V2.0 Exam Dumps - HCIA-Datacom V2.0

When a switch receives an untagged frame from a user host on an access interface , it associates that frame with the VLAN configured on the interface. In this scenario, PC1 and PC2 are in VLAN 10, and GE1/0/2 is an access interface in VLAN 10. After SW1 receives the frame from PC1, it internally associates the frame with VLAN 10 , so option A is correct in the practical VLAN-processing sense used in HCIA-Datacom questions.

When the frame is forwarded out an access interface toward PC2, the switch sends it without a VLAN tag , because end hosts normally do not process 802.1Q tags. Therefore, option D is correct. Option B is incorrect because both hosts are in the same VLAN and can communicate normally; SW1 does not discard the return traffic for that reason. Option C is not correct in the standard VLAN switching model used by Huawei training, because the switch performs forwarding based on VLAN membership and internally processes the frame as belonging to VLAN 10. This question mainly checks understanding of access/trunk behavior and tag handling on ingress and egress.

According to the topology and the original question scenario, the correct answer is 10.2.1.1, so option B is selected. In HCIA-Datacom troubleshooting questions of this type, the goal is usually to identify the correct management address, next-hop interface address, or testing destination based on the addressing design shown in the figure.

The answer depends on the role of the device and the direction of the connectivity verification. In such topologies, each interface belongs to a specific network segment, and the selected address must match the intended test target on that segment. If the test is being performed toward the neighboring device or a specific reachable interface, using the correct IP on the proper subnet is essential. An incorrect address may still look familiar from the topology but would not represent the right test endpoint. HCIA-Datacom places strong emphasis on reading topology labels carefully, matching interface addresses to subnet assignments, and choosing the correct destination when using tools such as ping, tracert, or service-specific connectivity tests. This question mainly checks address recognition accuracy in a troubleshooting context.

This statement is true . When a device has multiple routes to the same destination prefix, route selection is based first on the longest prefix match , and when prefix length is the same, the device compares the route preference or administrative priority associated with each routing source. On Huawei devices, a direct route has a better preference than a static route , so the direct route is selected first when both routes have the same destination and mask.

A direct route is generated automatically when an IP address is configured on an interface and that interface is Up. Because the destination network is directly connected, this route is considered more trustworthy and efficient than a manually configured static route pointing to the same prefix. HCIA-Datacom uses this principle to explain route selection, routing-table generation, and troubleshooting cases where a configured static route does not appear as the active route because a direct or dynamic route has higher priority. This is a basic but important concept in IP forwarding and helps engineers correctly interpret routing tables on Huawei routers and Layer 3 switches.

On Huawei devices, the undo command is used to remove a previously applied configuration, disable a function, or restore a parameter to its default state. In option B , undo ip address is a valid interface-view command that removes the IP address configured on the interface. In option C , undo portswitch is also a valid interface command on switch interfaces that converts a Layer 2 interface into a Layer 3 interface when supported by the device. In option D , undo sysname restores the device name to the default hostname, which is valid in system view.

Option A is incorrect because system-view is a command used to enter system view from user view, but undo system-view is not a valid command for exiting that view. Exiting system view is done with commands such as quit, return, or by using shortcut keys. This question checks the understanding that undo only applies to configurable features and parameters, not to view-switching commands in the CLI hierarchy.

The uploaded key marks this statement TRUE, but the Huawei VRP operating behavior makes FALSE the technically correct answer as the question is written. Creating Eth-Trunk 1 with the interface Eth-Trunk 1 command does not, by itself, enable LACP. The default Eth-Trunk working mode is manual load balancing on the relevant VRP platforms. In manual mode, the local switch does not depend on LACP negotiation with the remote switch to decide whether locally added, physically Up member interfaces can make the aggregation operational. If SW1 ' s member interfaces are physically normal and correctly added to Eth-Trunk 1, failing to add the corresponding SW2 interfaces to its Eth-Trunk can certainly break end-to-end forwarding, but it is not in itself a sufficient explanation for the local Eth-Trunk on SW1 being Down. In LACP mode, missing peer membership can prevent correct aggregation because LACPDUs are not exchanged as expected. Since LACP mode is not specified here, option B is the verified answer.

Modern cloud data centers require horizontal scalability, high east-west bandwidth, virtualization support, and flexible tenant network extension. A spine-leaf physical topology provides predictable low-hop connectivity between leaf switches by connecting each leaf to the spine layer. VXLAN provides an overlay that can create large numbers of logical Layer 2 segments over the Layer 3 underlay and is well suited to virtualized and multi-tenant cloud environments. The combination of Spine-Leaf and VXLAN is therefore a standard architecture for cloud-based general-purpose data center networks. M-LAG with Eth-Trunk can provide device and link redundancy but does not by itself provide the scalable overlay architecture expected for a cloud fabric. PFC and ECN are lossless-network and congestion-management technologies rather than a complete general-purpose data center architecture. STP with VRRP represents more traditional Layer 2 redundancy and gateway protection and does not offer the same cloud-fabric scalability. Consequently, the architecture described in the question is Spine-Leaf + VXLAN, making option B correct.