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

Detailed Explanation:UDP (User Datagram Protocol) is a connectionless protocol that does not provide reliability, packet sequencing, or traffic control. These features are usually managed by TCP, which is used for applications requiring reliable data transmission. UDP’s design makes it suitable for real-time applications, such as video streaming or VoIP, where speed and low latency are prioritized over reliability. (Reference: HCIA-Datacom Training Material, UDP Characteristics)

ICMP and NAPT:ICMP packets do not have port numbers, but NAPT (Network Address and Port Translation) can still manage ICMP traffic by matching identifiers in the ICMP header. This allows NAPT to handle ICMP messages properly​​.

Correct Answer:FALSE. ICMP packets can be handled by NAPT.

Comprehensive Explanation: SWA has the lowest Bridge ID and is the root bridge. In this topology, G0/0/2 of SWA and G0/0/1 of SWC are forwarding ports. Since G0/0/3 of SWB provides an alternate path to the root bridge, it will be placed in a blocking state to prevent network loops. The Spanning Tree Protocol ensures that only the most efficient path to the root bridge is active, and alternate paths are blocked until needed.

A broadcast address, with all host bits set to 1, is used for broadcasting messages to all devices within a network segment. It cannot be assigned to a specific host, as its purpose is to reach every device in the subnet. Therefore, it is reserved for broadcast communication and cannot serve as an individual host address​.

Comprehensive and Detailed Explanation:

Spanning Tree Protocol (STP) prevents switching loops in networks with redundant links by:

Blocking certain links while still maintaining redundancy.

Preventing broadcast storms and MAC table instability.

Reactivating backup links if the primary link fails.

✅ Reference: HCIA-Datacom Switching Guide – STP Loop Prevention

Detailed Explanation:In a tree topology, nodes are arranged hierarchically with root nodes at the top and leaf nodes at the base. This structure is often used in larger networks because it supports scalability and easy addition of nodes. However, if a higher-level node (e.g., root or intermediate node) fails, all dependent nodes in its subtree lose connectivity. Therefore, faults at higher layers have a more significant impact than faults at the leaves. (Reference: HCIA-Datacom Training Material, Network Topology Types)

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​.

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.

Understanding Timers:

Forward Delay Timer: Default value is 15 seconds, not 20 seconds.

Max Age Timer: Default value is 20 seconds.

Hello Timer: The default interval is 2 seconds for BPDU transmission.

Switch Role:

The output indicates that the switch is not the root bridge, confirming option D is correct.

Conclusion:

Statement A is incorrect as the Forward Delay timer is not 20 seconds.

References: HCIA-Datacom V1.0 Certification Guide, Chapter 8: Spanning Tree Protocol.