Free Practice Questions for Huawei H12-811_V1.0 Exam

B (Correct): GE0/0/1 is untagged for VLAN 10, meaning it does not add VLAN tags to VLAN 10 frames.

C (Correct): GE0/0/1 is also untagged for VLAN 20, so it does not add VLAN tags to VLAN 20 frames.

D (Correct): The output shows four VLANs (10, 20, 30, 40), which were manually created.

A (Incorrect): GE0/0/2 is not explicitly mentioned, so VLAN tagging behavior cannot be confirmed.

Thus, the correct answers are B, C, and D.

Detailed Explanation:Making a call on a landline telephone involves network communication. Though it uses a traditional telephone network (Public Switched Telephone Network, PSTN), the process of sending and receiving voice data through a wired system qualifies as network communication. The voice signals are converted into electrical signals, transmitted over the network, and then converted back into voice signals on the receiving end .

Detailed Explanation:To accommodate 26 hosts, the subnet needs at least 30 addresses (including network and broadcast addresses). A subnet mask of 255.255.255.192 provides 64 addresses (2^6 - 2 = 62 usable addresses), which is more than enough to support 26 hosts while also leaving space for additional hosts if needed.

Comprehensive Explanation: In STP (Spanning Tree Protocol), the root bridge is elected based on the lowest Bridge ID. The Bridge ID consists of two parts: the bridge priority and the MAC address of the switch. The switch with the lowest Bridge ID is elected as the root bridge. If two switches have the same priority, the switch with the lowest MAC address becomes the root. Other parameters such as Port ID and Root path cost are used in subsequent decisions to determine the best paths to the root bridge, but they are not used in the root bridge election itself.

Comprehensive and Detailed Explanation:

A static route requires the following essential parameters:

Destination Network → The network to reach (e.g., 10.1.1.0/24). ✅

Next-hop IP Address → The next router to forward traffic (e.g., 192.168.1.1). ✅

Outbound Interface → Instead of a next-hop, an interface (e.g., GigabitEthernet0/0/1) can be used. ✅

❌ Incorrect Option:

MAC address is not needed because routers forward packets based on IP, not MAC addresses.

✅ Reference: HCIA-Datacom Routing Guide – Static Routing Fundamentals

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​.

Comprehensive and Detailed Explanation:

OSPF neighbor states occur in the following sequence:

Down → No Hello packets received.

Init → Hello received, but no bidirectional communication yet.

2-Way → Bidirectional Hello exchange, DR/BDR election happens here.

ExStart → Master/slave relationship is determined (B is correct).

Exchange → Routers exchange Database Description (DD) packets to describe their LSDBs (A and D are correct).

Loading → Link State Requests (LSR) and Link State Updates (LSU) occur.

Full → LSDB synchronization is complete (C is correct).

✅ Reference: HCIA-Datacom Routing Guide – OSPF Neighbor States

In VRP, to enter the configuration view for a specific OSPF area, the syntax [Huawei-ospf-1] area 0.0.0.0 is used. This command specifies Area 0 in the correct format (dotted decimal notation) as required by VRP, which supports OSPF multi-area configuration by designating specific area views​.

To determine which types of traffic can be filtered by an advanced Access Control List (ACL) on a Huawei device, we need to understand the capabilities of advanced ACLs as defined in HCIA Datacom documentation and Huawei networking standards. Let’s analyze each option step by step:

Understanding Huawei ACL Types:

Huawei devices support different types of ACLs, including Basic ACLs, Advanced ACLs, and Layer 2 ACLs (MAC-based). Each type has specific filtering capabilities:

Basic ACLs (2000–2999): Filter traffic based on source IP addresses only.

Advanced ACLs (3000–3999): Provide more granular filtering, including source IP addresses, destination IP addresses, protocols, port numbers, and other Layer 3 and Layer 4 parameters. They are more flexible than Basic ACLs but do not filter based on Layer 2 information like MAC addresses.

Layer 2 ACLs (4000–4999): Filter traffic based on source and destination MAC addresses, VLAN IDs, and other Layer 2 parameters.

The question specifically asks about advanced ACLs, so we focus on their capabilities, which are limited to Layer 3 and Layer 4 traffic (IP-based and protocol-specific filtering).

Evaluating Each Option:

A. Network traffic based on a specific source IP address

Advanced ACLs on Huawei devices can filter traffic based on source IP addresses. This is a standard feature of advanced ACLs, which support matching rules for source IP addresses using wildcard masks or specific IP ranges.

This statement is true.

B. Network traffic based on a specific source MAC address

Advanced ACLs operate at Layer 3 and Layer 4 (IP and TCP/UDP) and do not have the capability to filter traffic based on Layer 2 information, such as MAC addresses. Filtering based on MAC addresses requires Layer 2 ACLs (e.g., ACLs in the 4000–4999 range), not advanced ACLs.

This statement is false.

C. Network traffic based on a specific user name

Advanced ACLs do not have the capability to filter traffic based on user names. User-based filtering typically requires authentication mechanisms (e.g., 802.1X, AAA, or RADIUS) combined with dynamic ACLs or policies, not standard advanced ACLs. Advanced ACLs are limited to IP addresses, protocols, and port numbers, not user-specific attributes.

This statement is false.

D. Network traffic based on a specific port number

Advanced ACLs can filter traffic based on transport layer port numbers (e.g., TCP/UDP ports), such as HTTP (port 80), FTP (port 21), etc. This is a key feature of advanced ACLs, allowing granular control over application-layer traffic.

This statement is true.

E. Network traffic based on a specific destination IP address

Advanced ACLs can filter traffic based on destination IP addresses, similar to source IP addresses. This is another standard capability, allowing matching rules for destination IP addresses using wildcard masks or specific IP ranges.

This statement is true.

Conclusion:

Advanced ACLs on Huawei devices can filter traffic based on:

Source IP addresses (Option A).

Destination IP addresses (Option E).

Port numbers (Option D).

They cannot filter traffic based on source MAC addresses (Option B) or user names (Option C), as these require Layer 2 ACLs or authentication-based policies, respectively.

Therefore, the correct answers are A, D, and E.