Pass the Huawei HCIA-Datacom H12-811_V1.0 Questions and answers with CertsForce

Comprehensive Explanation: In STP (Spanning Tree Protocol), ports can be in several states, including:

Discarding: The port is not forwarding traffic, either because it is in a blocking state or not participating in active forwarding.

Listening: The port is processing BPDUs and is preparing to transition to either the learning or forwarding state. No data frames are forwarded during this state.

Forwarding: The port is actively forwarding traffic as part of the active network topology.

The "Disabled" state is not part of the STP protocol but rather represents a port that is administratively shut down or not participating in the STP process.

Detailed Explanation:The default preference of static routes on Huawei routers is 0. This means that if a static route is present, it will always take precedence over routes with higher preferences, such as dynamically learned routes, unless a lower preference is manually assigned​​.

Detailed Explanation:Each Virtual Access Point (VAP) on an AP is identified by a unique Basic Service Set Identifier (BSSID), which is the MAC address used at the data link layer. The SSID is a human-readable network name, while the BSSID is the technical identifier​.

In the ACL (Access Control List) configuration:

Rule 5: Permits traffic from 192.168.1.1.

Rule 10: Denies traffic from 192.168.1.1.

Since ACLs are processed in sequential order, the first matching rule is applied.

Option A (Incorrect): The first rule (permit) is matched before the deny rule.

Option B (Incorrect): 192.168.1.254 is not listed in the ACL, so it does not match any rule.

Option C (Correct): 192.168.1.1 matches the first permit rule (Rule 5), so it is allowed.

Option D (Incorrect): 192.168.1.254 is not mentioned in the ACL rules, so it does not match the permit rule.

Thus, the correct answer is C.

Comprehensive Explanation: The quit command is used to return from the system view to the user view in Huawei's VRP (Versatile Routing Platform). This command allows users to exit the current configuration mode and revert to the default user view. For example, when you are in the system view and you want to return to the user view, typing quit takes you back to the initial prompt without saving the current configuration​​.

The country-code command is used on an AC (Access Controller) to specify the country code, which aligns the wireless settings with local regulatory standards. Setting the correct country code ensures compliance with regional RF (Radio Frequency) regulations, such as frequency bands and transmission power limits​.

In trunk mode, the interface can forward frames tagged with VLANs specified in the allow-pass list (here, VLAN 100) without removing tags. However, if an untagged frame is received, it is assigned to the PVID (here, VLAN 200). This configuration allows both tagged and untagged traffic, with the PVID determining the VLAN for untagged frames​.

Understanding Trunk Ports:

Trunk ports carry traffic from multiple VLANs.

Native VLAN (PVID) frames are sent untagged on the trunk.

Breakdown of Configuration:

port link-type trunk → Interface operates as a trunk.

port trunk pvid vlan 10 → Sets VLAN 10 as the native VLAN.

port trunk allow-pass vlan 10 20 30 40 → Allows traffic from VLANs 10, 20, 30, and 40.

Conclusion:

Since VLAN 10 is the PVID (native VLAN), frames from this VLAN are sent untagged.

Correct answer is A (VLAN 10).

References: HCIA-Datacom V1.0 Certification Guide, Chapter 4: VLANs and Trunking.

The default port number for Telnet is 23. This standard port assignment allows Telnet clients to connect to Telnet servers, facilitating remote management and troubleshooting tasks on network devices. Ports are preassigned to services to streamline network communication and reduce conflicts​.