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

Huawei devices support different authentication modes:

authentication-mode local: Requires a username and password stored locally.

authentication-mode hwtacacs: Uses Huawei TACACS+ authentication, which requires a username and password.

authorization-mode hwtacacs: Refers to authorization (not authentication).

authentication-mode none: Does not require a username or password, meaning no authentication is needed.

Thus, the correct answer is D.

Private vs Public IPs:

192.168.1.2 belongs to the private IP range (192.168.0.0/16).

Private IP addresses cannot be routed on the Internet and must be translated.

Network Address Translation (NAT):

NAT converts private IP addresses to a public IP so that the device can access the Internet.

Conclusion:

NAT is required to access the Internet from a private IP, making the statement TRUE.

References: HCIA-Datacom V1.0 Certification Guide, Chapter 6: NAT and IP Addressing.

Detailed Explanation:Access Control Lists (ACLs) are processed in sequential order, meaning that once a packet matches a rule, subsequent rules are ignored. To ensure that more specific (strict) conditions are applied, strict rules should be listed first, followed by loose rules. (Reference: HCIA-Datacom Training Material, ACL Configuration and Rule Order)

In OSPF, a router in the backbone area (Area 0) has a full LSDB (Link-State Database) for all routers within the OSPF domain. This comprehensive LSDB allows the backbone area to communicate effectively with other areas by providing routing information about all connected OSPF routers, facilitating inter-area routing​.

Comprehensive Explanation: In Telnet sessions, different privilege levels determine what actions a user is allowed to perform. If users are not able to configure the IP address, it is likely that their privilege level is set incorrectly. The administrator must ensure that the Telnet users are assigned the correct privilege level (typically level 15 for full administrative rights) to allow configuration changes, including IP address modifications.

Detailed Explanation:While a switch will typically forward a unicast frame based on its MAC address table, certain scenarios like port security or VLAN restrictions may prevent the frame from being forwarded even if a MAC entry exists. (Reference: HCIA-Datacom Training Material, MAC Address Table and Frame Forwarding)

Detailed Explanation:In a Layer 2 WLAN, an Access Controller (AC) typically handles authentication and management but does not act as a gateway. Instead, a Layer 3 device, such as a router, serves as the gateway. (Reference: HCIA-WLAN Training Material, WLAN Layer 2 and Layer 3 Concepts)

Trunk Interface Basics:

Trunk interfaces are used to carry traffic for multiple VLANs between switches.

Tagged frames include VLAN identifiers, while untagged frames belong to the native VLAN.

Untagged Frames:

Frames from the native VLAN are sent untagged on the trunk interface.

Conclusion:

Trunk interfaces support both tagged and untagged frames, so the statement is TRUE.

References: HCIA-Datacom V1.0 Certification Guide, Chapter 4: VLAN Basics.

Comprehensive Explanation: In STP (Spanning Tree Protocol), the Bridge ID (BID) is used to uniquely identify a switch in the network. It consists of a bridge priority and a MAC address. A BID with a bridge priority of 0 and a MAC address starting with 00-01 is reserved for special purposes and cannot be used in a configuration BPDU (Bridge Protocol Data Unit) sent by a regular switch. This prevents conflicts with reserved MAC addresses.