H12-811_V1.0 Exam Dumps - Huawei HCIA-Datacom Questions and Answers

Huawei ACLs operate at different layers:

Basic ACL (Correct): Matches Layer 3 IP source addresses.

Advanced ACL (Correct): Matches Layer 3 (IP, TCP, UDP) and Layer 4 information.

User ACL (Correct): Used in QoS policies to filter based on IP addresses.

Layer 2 ACL (Incorrect): Works at Layer 2 (Ethernet frames) and cannot match Layer 3 (network layer) information such as IP addresses.

Thus, the correct answer is D.

SNMP Port Numbers:

161: Used for SNMP managers to send requests to agents.

162: Used by SNMP agents to send trap or alarm messages to the Network Management System (NMS).

163 and 164: Not commonly used in SNMP operations.

To enable an FTP server on a Huawei router, the following commands are required:

Create the FTP user and set the allowed service:

local-user huawei service-type ftp

Set the FTP user's password:

local-user huawei password cipher huawei

Specify the root directory for FTP access:

local-user huawei ftp-directory flash:/dhcp/

Enable the FTP server function:

ftp server enable

Since all four commands are required, the correct answers are A, B, C, and D.

Comprehensive Explanation: An ACL (Access Control List) is used to define rules for permitting or denying packets based on criteria such as IP addresses, protocols, or ports. However, the ACL only takes effect when it is applied to a service module, such as an interface or a firewall rule. This ensures that traffic is filtered according to the ACL rules as it passes through the device. Without being applied, the ACL rules are inactive and do not influence traffic.

WEP (Wired Equivalent Privacy) supports open authentication, which allows any client to associate with the network without verifying credentials. This form of authentication is considered insecure by modern standards, as it provides minimal protection for network access. WPA and WPA2 rely on pre-shared keys or 802.1X authentication, which are more secure and do not use open authentication​.

Detailed Explanation:Using DHCP provides several advantages:

It helps prevent IP address conflicts because the DHCP server dynamically assigns IP addresses, ensuring each device gets a unique one.

IP addresses can be reused by setting lease times, allowing the DHCP server to recycle addresses from devices that no longer need them.

Centralized configuration management is also possible. If network configuration details such as the DNS server change, the administrator can update these settings on the DHCP server, and all DHCP clients will automatically receive the new information​​.

In the provided routing table, the router’s next hop for each destination indicates whether the destination is reachable directly or indirectly. For entries where the next hop is specified, the router forwards packets accordingly through the designated interface, as confirmed in the table output. This information is used to verify the forwarding behavior for each destination​.

Detailed Explanation:Static routing does not automatically recover from link failures; manual reconfiguration is required if a static route path becomes invalid. Dynamic routing protocols, on the other hand, adapt automatically to network changes, adjusting routes as needed. (Reference: HCIA-Datacom Training Material, Static vs. Dynamic Routing)