Huawei Updated H12-811_V1.0 Exam Questions and Answers by cyrus

Detailed Explanation:Access ports are configured for a single VLAN and thus send untagged frames by default. Trunk ports, conversely, handle traffic for multiple VLANs, tagging each frame with a VLAN ID. (Reference: HCIA-Datacom Training Material, Switch Port Types and VLAN Tagging)

Error Analysis:The error message indicates that the command entered is not recognized by the device. This typically occurs when the syntax is incorrect or the first keyword of the command is unrecognized. The system identifies the problem location ('A' position), which points to the initial part of the command.

Analysis of Options:

Option A: "The entered parameter is not specified" refers to cases where a valid command is incomplete due to missing parameters, not an unrecognized command. This is unrelated to the error displayed.

Option B: "The entered command is incomplete" applies when additional parameters are needed to complete the command. However, the system explicitly states "unrecognized command," ruling this out.

Option C: "The parameter type is incorrect" refers to an error where a parameter is of the wrong type (e.g., string instead of integer). This is not related to keyword recognition.

Option D: "No keyword is found" directly aligns with the error message, as the system cannot recognize the first keyword of the command, making it the correct answer​​.

Step 1: Understanding MAC Address Table Lookup

When Host A sends a frame with MAC-B as the destination, SWA checks its MAC address table to determine the correct port to forward the frame.

According to the MAC table, MAC-B is associated with interface G0/0/2.

Step 2: Forwarding Behavior

Since SWA knows the destination MAC address and its associated interface, it will forward the frame only through G0/0/2.

Step 3: Analyzing the Answer Choices

Option A (Correct - Forwards only through G0/0/2): ✅

SWA correctly forwards the frame to G0/0/2, where HostB is connected.

Option B (Incorrect - Forwards through G0/0/3): ❌

MAC-B is not associated with G0/0/3, so the switch will not forward the frame there.

Option C (Incorrect - Floods the frame): ❌

Flooding occurs only when the MAC address is unknown, but in this case, MAC-B is known.

Option D (Incorrect - Discards the frame): ❌

The switch only discards frames if there’s a security violation or filtering rule, which is not mentioned here.