Free Huawei H12-811_V1.0 Practice Exam with Questions & Answers | Set: 2

Command Overview:The Huawei Versatile Routing Platform (VRP) uses specific commands to manage file systems and view directory contents. While the dir command is used to list files in the current directory, the pwd command is not supported in VRP environments. Instead, the current working directory is displayed as part of the command prompt in VRP​​​.

Command Analysis:

dir Command:This command is supported and displays the list of files and subdirectories in the current directory. Example:

dir

Output includes filenames, sizes, and other metadata.

pwd Command:The pwd command is commonly used in UNIX/Linux systems to print the current working directory. However, this command is not available on VRP. VRP automatically shows the current directory in its prompt, making pwd unnecessary.

Correct Answer:Since only dir is valid, the statement is false. The correct answer is B (FALSE).

SNMPv3 was designed with enhanced security and administration features compared to previous versions. It offers robust authentication and encryption to protect against unauthorized access and eavesdropping, as well as improvements in administration with support for notification originators and proxy forwarders. These advancements make SNMPv3 the preferred version for secure network management​.

In Huawei’s VRP, the default preference value for OSPF routes is generally 10, but this value can be adjusted based on configuration requirements. Therefore, it is not necessarily always set to 10, as network administrators may alter the preference to prioritize different routes. This flexibility allows customization based on the network's specific routing needs​.

1. Understanding the ACL Rule

The rule:

rule 5 deny source 100.0.12.0 0.0.0.255

Blocks traffic originating from 100.0.12.0/24 (Host B’s network).

This means any packet sent from Host B to Host A will be blocked.

2. Applying the ACL to the Correct Interfaces

Option A: Applied inbound on GE0/0/1 → Blocks packets from Host B before reaching Host A. ✅

Option B: Applied inbound on GE0/0/2 → Blocks packets from Host A before reaching Host B. ✅

3. Why Other Options Are Incorrect

Option C (GigabitEthernet0/0/3):

Interface GE0/0/3 is not connected to Host A or Host B, so applying ACL here is meaningless.

Option D (Outbound on GE0/0/1):

Outbound filtering is less efficient than inbound filtering because it blocks traffic after routing.

4. Correct Approach to Prevent Communication

To completely block communication between Host A and Host B, we must:✅ Block inbound traffic on GE0/0/1 (Host A’s interface)✅ Block inbound traffic on GE0/0/2 (Host B’s interface)

Conclusion:

The correct choices are A and B because they block inbound traffic at the correct interfaces.

Options C and D are incorrect because they apply ACL rules to the wrong interfaces or use inefficient filtering.

References:✅ HCIA-Datacom V1.0 Certification Guide, Chapter 5: ACL Configuration

Detailed Explanation:OSPF (Open Shortest Path First) uses protocol number 89 at the network layer. This distinguishes OSPF packets from other protocols such as TCP (protocol number 6) and ICMP (protocol number 1) .

In one-arm routing (or router-on-a-stick) mode, a single physical link (with sub-interfaces) can carry traffic between multiple VLANs, reducing the number of physical links required. This approach minimizes cabling and port usage while still enabling inter-VLAN communication. However, it does not inherently reduce IP address usage, routing table entries, or the number of devices required​.

Comprehensive Explanation: Host A and Host B cannot communicate because they are in different subnets. Host A's IP address is 10.0.12.1/30, while Host B's IP address is 10.0.12.5/24. Since they are in different subnet ranges and there is no router in the diagram to perform inter-subnet routing, direct communication between them is not possible without a router to route traffic between the different subnets.

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

OSPFv1 (B): Was an experimental version, not widely used.

OSPFv2 (C): Used for IPv4 networks, does not support IPv6.

OSPFv3 (D): Specifically designed for IPv6 networks and includes additional features like security and address scope handling.

OSPFv4 (A): This version does not exist.

Thus, the correct answer is D (OSPFv3).