Exam H12-811_V2.0 Topic 4 Question 137 Discussion

Actual exam question for Huawei's H12-811_V2.0 exam
Question #: 137
Topic #: 4
Drag and Drop Question
On the campus network shown in the figure below, the core switch Core1 functions as a Layer 3 gateway and as a DHCP server to dynamically assign IP addresses to AP1, PC1, PC2, and PC3.
The network below Core1 is a Layer 2 network. WAC1 and R1 are connected to Core1 at Layer
3. AP1 goes online through VLAN 100. VLAN 101 and VLAN 102 are respectively used for the wireless and wired services. Additionally, the tunnel forwarding mode is used for wireless traffic forwarding. Match device interfaces with their respective allowed VLANs. (Note: No additional VLANs are allowed on device interfaces, and interconnection VLANs are not considered.)

Suggested Answer:


Explanation:
VLAN 100 -> GE1/0/3 of ACC1
VLAN 101-> GE1/0/2 of Core1
VLAN 102 -> GE1/0/1 of ACC2
VLAN 100 and VLAN 101 -> GE1/0/1 of ACC1
VLAN 100 and VLAN 101 -> GE1/0/3 of Core1
VLAN 102 -> GE1/0/4 of Core1
GE1/0/3 of ACC1 -> VLAN 100: This interface directly connects ACC1 to AP1. Since AP1 goes online through management VLAN 100 and wireless user traffic uses tunnel forwarding mode (where user data is encapsulated inside a CAPWAP tunnel directly to WAC1), the physical link to the AP only needs to pass the untagged management traffic of VLAN 100.
GE1/0/2 of Corel -> VLAN 101: This port links Corel to WAC1. In tunnel forwarding mode, all wireless user data (VLAN 101) is encapsulated inside CAPWAP data tunnels by the AP and sent to the WAC. The WAC then decapsulates this traffic and forwards it into the core switch.
Therefore, the interface facing WAC1 must allow service VLAN 101 to route the decapsulated wireless traffic.
GE1/0/1 of ACC2 -> VLAN 102: This interface forms the uplink from the access switch ACC2 to Corel. Because ACC2 only services PC3 (wired service VLAN 102), its uplink only requires access to VLAN 102.
GE1/0/1 of ACC1 -> VLAN 100 and VLAN 102: This is the uplink interface from ACC1 to Corel.
ACC1 hosts AP1 (which requires management VLAN 100) and PC2 (which belongs to wired service VLAN 102). Therefore, this trunk link must allow both VLAN 100 and VLAN 102.
GE1/0/3 of Corel -> VLAN 100 and VLAN 102: This interface connects Corel down to ACC1. To match the configuration of ACCTs uplink, it must allow both the AP management traffic (VLAN
100) and the local wired user traffic (VLAN 102).
GE1/0/4 of Corel -> VLAN 102: This port connects Corel to ACC2. Because ACC2 exclusively handles the wired clients residing in service VLAN 102, this downlink interface only needs to permit VLAN 102.

by Max at Sep 29, 2026, 07:04 PM

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